Question Slow charging on S21 Ultra - Samsung Galaxy S21 Ultra

Question Slow charging on S21 Ultra - Samsung Galaxy S21 Ultra

Hey folks!
I have orignal Samsung 45W charger (listed on their official site) and when I use it to charge my Galaxy S21 Ultra, it takes longer than what I have seen in some Youtube videos.
Mostly it takes the phone around 70 minutes to charge from 0 to 100.
But when i charge it using my Samsung 45W charger, i takes around 100 minutes ( 1 Hour 40 mins) to full charge.
I have tried charging the phone while the phone is turned OFF as well when it is ON, but i don't get the charging time around 70 minutes.
The fun thing is that if I plug the charger around 10-15%, it shows me that it will be charged completely in around 50mins to 1 hour, but as the time passes on, that figure increases and I get a completely charged phone in around 1 hour 40 minutes.
If anyone has a solution, please let me know.
The 45W Samsung charger says that it outputs as much current as required by the device.

The S21 series don't utilise 45w do you will only get 25w of power

I have been at 1% and it said it would take 1 hour and 7 mins to fully charge

That's normal

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Im assuming you got these on?
If so, try a cable change.
If cable change doesn't fix it, try factory reset.
If it doesn't work, contact Samsung

Da1e7150 said:
The S21 series don't utilise 45w do you will only get 25w of power
Click to expand...
Click to collapse
I know that, but let's say it utilizes 25W, so it should fully charge the phone in 70 minutes but as i said in the orignal post, it takes around 100 minutes.
Moreover, the estimate that the phone shows, it does not stick to that

Da1e7150 said:
That's normal
Click to expand...
Click to collapse
but why other S21 ultra charges faster?

mpore14 said:
View attachment 5295125
Im assuming you got these on?
If so, try a cable change.
If cable change doesn't fix it, try factory reset.
If it doesn't work, contact Samsung
Click to expand...
Click to collapse
Superfast charging and fast charging is on, shouldn't it be?

ankitsxperiago said:
I know that, but let's say it utilizes 25W, so it should fully charge the phone in 70 minutes but as i said in the orignal post, it takes around 100 minutes.
Moreover, the estimate that the phone shows, it does not stick to that
Click to expand...
Click to collapse
It will be to do with your actual house/flat power supply it might not be giving the full wattage needed I really wouldn't worry

Da1e7150 said:
It will be to do with your actual house/flat power supply it might not be giving the full wattage needed I really wouldn't worry
Click to expand...
Click to collapse
I don't think that's the problem

ankitsxperiago said:
but why other S21 ultra charges faster?
Click to expand...
Click to collapse
Temperature is a factor.
Charging is an electrochemical reaction that needs heat.
Fast charging will not engage if the start temp is too low. Best start temperature is at least 85°F.
90F is better. Keep battery below 100F while charging, if it exceeds 101-102F it will disengage or stop charging entirely.
After reaching 70-75% or so it will ramp down.
At 90% it greatly ramps back protect the battery.
Try to limit charging to 30-90%; 40-72% being ideal for charge speed and battery longevity.
Avoid going below 20% as it greatly time. battery stress and provides little usable time.
Avoid charging of any kind if battery temp is below 72F as it can cause Li plating which permanently degrades the cell.
Drop in battery capacity and erratic fast charging can indicate a battery failure. This can happen at anytime but becomes more likely as the battery ages.
☠Any signs of cover bulging means the battery must be replaced asap. It rests on the display and can damage it, or worse...☠

Same here. My S21 Ultra (exynos) takes over 100 minutes to fully charge. Should I be contacting Samsung?

iampunX said:
Same here. My S21 Ultra (exynos) takes over 100 minutes to fully charge. Should I be contacting Samsung?
Click to expand...
Click to collapse
Use a 25w charger it's known the 45w charger charges the phone slower

Da1e7150 said:
Use a 25w charger it's known the 45w charger charges the phone slower
Click to expand...
Click to collapse
I've never seen that stated before.
Source?

It's on Samsung's own forums

Da1e7150 said:
It's on Samsung's own forums
Click to expand...
Click to collapse
Could be a lot of reasons for that including temperature. The 45 w brick charge rate isn't that much greater anyway.
I get best fast charging results when the start temp is close to 90F on my N10+.
At a 72F start temp it's possible fast charging won't engage at all.
If fast charging fails to engage because of low temperature at the beginning of the charge cycle it will revert to slow charging for that entire charge cycle regardless if the temperature rises into the optimum range during the charge cycle.

Guys why are you so obsessed with charging the phone super fast?
It is better to let it take it's time, it will let the battery stay healthy for longer. Realistically if you have all the fast charging options OFF, and left your phone to charge at night, this would be the best scenario. The device can easily last a full day anyway.

babyboy3265 said:
Guys why are you so obsessed with charging the phone super fast?
It is better to let it take it's time, it will let the battery stay healthy for longer. Realistically if you have all the fast charging options OFF, and left your phone to charge at night, this would be the best scenario. The device can easily last a full day anyway.
Click to expand...
Click to collapse
Charging overnight or to 100% is the worst way to charge an Li. Fast charging is really useful for the frequent midrange (40-70%) charging Li's prefer.
10 minutes vs 20 minutes for 20%.
If you don't mind the extra time then midrange slow charging is the optimum way to go.
Always keep battery temperature above 80°F and under 100F to avoid the possibility of the Li plating phenomenon though.

blackhawk said:
Charging overnight or to 100% is the worst way to charge an Li. Fast charging is really useful for the frequent midrange (40-70%) charging Li's prefer.
10 minutes vs 20 minutes for 20%.
If you don't mind the extra time then midrange slow charging is the optimum way to go.
Always keep battery temperature above 80°F and under 100F to avoid the possibility of the Li plating phenomenon though.
Click to expand...
Click to collapse
You may have a point. Over the years I have seen various sources talk about charging fast and slow and also indeed charging to 100 is not the ultimate scenario. The ultimate one is to charge it to about 90% and the phone would stop charging automatically. It is actually possible and adjustable with a Magisk script as I recall.
In the long term though, from my personal experience I have discovered that charging your phone at night slowly is best all-around scenario. For example, you need 2 good years to lose 10-20% of battery capacity. And realistically it is unlikely that you would use your phone for more than 3 years as you would most likely upgrade. So having to go trough the constant hustle of quick charging it and stopping it on time and etc, is just not worth it.
And if you do decide to use your phone for over 3 years, your phones waterproofness would gone anw, so you might as well just pop a new battery...

babyboy3265 said:
You may have a point. Over the years I have seen various sources talk about charging fast and slow and also indeed charging to 100 is not the ultimate scenario. The ultimate one is to charge it to about 90% and the phone would stop charging automatically. It is actually possible and adjustable with a Magisk script as I recall.
In the long term though, from my personal experience I have discovered that charging your phone at night slowly is best all-around scenario. For example, you need 2 good years to lose 10-20% of battery capacity. And realistically it is unlikely that you would use your phone for more than 3 years as you would most likely upgrade. So having to go trough the constant hustle of quick charging it and stopping it on time and etc, is just not worth it.
And if you do decide to use your phone for over 3 years, your phones waterproofness would gone anw, so you might as well just pop a new battery...
Click to expand...
Click to collapse
My normal top off point is 65-75%, most times after 72-80% fast charging has ramped back a lot. What's nice about midrange charging is you take a 10 minute break and are good for another 2 hours.
On my Note 10+ I needed to replace the battery at 1.5 year mark. It saw some hot weather abuse and cold charging etc, etc, etc.
It swelled and had to proform an emergency batterydictomy
Now that I know how to change it out it's no big deal... and charging protocols/battery longevity are sort of a game.
Lol, I ordered an extra charging port PCB too

Related

Portable power packs (on the go chargers) solar+USB

I often spend time away from mains power or places where i will be able to safely leave a phone ( or other gadget) plugged into the mains on charge un attended.
At the moment i hav been using a power monkey explore solar charger to keep my gadgets alive, this can charge via the its solar panel, or via the mains, and then charge my gadgets up overnight ( usually ) in my tent, so my phone is/was ready to go with a full charge in the morning, and the power monkey could then go in the sun, or sit connected, and un attended on a mains supply during the day.
Ice just done an expreiment with the power monkey explore to see how it copes with the increased demands of the Motorola Defy, and i dont think it will be able to cope as the charger has virtually exhausted itself getting my Defy from 20% to 60%, and its slightly warm to the touch.
The charger battery is rated at 2200mah, and i have had the device for a few years, so that rating may be a little lower in reality.
So has anyone got any recommendations for a portable charger/solar charger that could charge the defy from 20% up to 100% for three days or more?

A 2,200mAh should do the trick on the Defy's 1,500mAh battery, otherwise the charger's battery is exhausted and needs replacement. F.e., my 1,000mAh A-solar charger adds (only) 40% max. w w w.a-solar.eu

Take a look at the JBC rugged phones and the chargers they come with. It is a usb charger with a mechanical coil. You need to wind it to charge it up. Something like that will be a long term plan that will stay with actually no replacable parts.
Something like this.
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Veho Pebble: 5000mAh battery. Will charge the Defy at least twice easily. Have one myself and it's great.

Have you thought about the powergorilla or the minigorilla

The power monkey Explore test may have been a little bit short, as the unit was only charged up showing all the bars on the LCD screen, and not the green LED as well.
In the meantime ive picked up a New Trent Extreme IMP1000 with a Li-poly battery rated at 11,000Mah the unit feature a DC input jack, a power button with 3 LEDS to indicate remaining charge, and a single USB power output.
I usually plug my defy into the IMP1000 charger after a day at work, with the battery down to 40/30% let it reach 100% charge( about 1 1/2 to 2 hours) unplug it, use the DEfy in the evening then leave it hooked up overnight to the IMP1000
This will be the 3rd night that i have repeated this process with the IMP1000 and it still has 2 out of 3 LEDs left on its power gauge, phone taking charge as normal.

How about using the powerchimp but with some more powerfull AA batteries like these
http://www.picstop.co.uk/uniross-27...=google&utm_medium=base&utm_campaign=products

I tried a powerchimp, and the batteries inside that got extremly hot ( 2,500mah GP NimH) this is usually caused by a high current drain on the batteries, and it isnt good for the batteries.
As for on the go devices so far, ive got a New trent imp1000 power pack ( which im currently testing ) a power monkey explore, a 4 AA battery USB power pack (two AA batteries in series ) a 4 AA solar charger ( chameleon) that also charges via USB, as well as 5v USB power out
As for other devices that need need power, when im away from the mains, these are: a cannon camera ( with li-ion power pack ), MP3 player, Motorola Defy
As for the New trent IMP1000 charge pack its now on Day 4, its charged my DEfy from 20% 3.681v up to 100% 4.164v in 2 hours and 20 minutes, (measured using the battery status app ) Later this evening, just before i go to bed i will hook it up again for an overnight charge, the Trent IMP1000 power pack is still showing 2 out of 3 LEDs on its power gauge.

Nokia has released a bike charger. You only have to reach about 10mph in order to reach wall socket charger efficiency (1000mA).
I believe they're about to release a micro-USB version of it. However there's an android dude already converting the existing nokia charger:
http://toddlerontour.com/universal-usb-bicycle-charger-nokia-dc-14-conversion/
//Dave

I use a MiniGorilla. Has inbuilt 10000mAh battery and lasts almost 2 weeks on charging my phone regularly without requiring a charge up itself.
Regular charging = ~every 2 days
It also turns itself off once the phone is fully charged to save its own battery.

I have one of these cheap "no-name" emergency chargers than runs on 1AA battery. However I'm pleasantly surprised: it runs up to (or rather down to) 0.7-0.8V, it has reasonable efficiency (and consequently it doesn't heat up too much), might be a good option if you have to maintain some bunch of AAs already (if you have a camera with 4AAs you already need to have 8 if you want spares).
I also have 2 small solar panels but they're more of a gimmick. Sure, even the small old one will run a small radio directly but we're talking 10-20mA. The radio will otherwise run off 2AAs for countless weeks (especially if you turn it on only when listening to it), it wouldn't even make sense to run it on rechargeables.
I run the numbers based on specs on solar chargers that catch my eye occasionally and it seems that you need to charge for quite a few days from the solar panel to pay for its own size and weight; that is in ideal conditions - in reality it will be more like over 1 week, possibly more (or rather never unless we're talking some serious expedition without access to power for multiple weeks, is there even such thing nowadays?).
However this MiniGorilla looks really great. Not cheap but it will even charge notebooks (or most likely netbooks). I already marked it as a potential gift, it belongs to the category "I would never buy one but if I have it I would use it regularly" (as opposed to the category "expensive crap that ends up in the attic if I don't re-gift or ebay it quickly").

d210 said:
I have one of these cheap "no-name" emergency chargers than runs on 1AA battery. However I'm pleasantly surprised: it runs up to (or rather down to) 0.7-0.8V, it has reasonable efficiency (and consequently it doesn't heat up too much), might be a good option if you have to maintain some bunch of AAs already (if you have a camera with 4AAs you already need to have 8 if you want spares).
Click to expand...
Click to collapse
thanks for the tip you've reminded me, that i have unused branded (philips) emergency chargers - with mini usb output and recently purchased mini to micro usb cable and a bunch of old aa's
looks like it's working

2Pints said:
I tried a powerchimp, and the batteries inside that got extremly hot ( 2,500mah GP NimH) this is usually caused by a high current drain on the batteries, and it isnt good for the batteries.
Click to expand...
Click to collapse
Given the low cost of good quality NiMh batteries these days i don't see the problem, if you lower the life span to only 100 charges (which is highly unlikely) its still only pennys. I use a 1 hour charger for my NiMh batteries and the batteries are too hot to handle when they come off charge and i have to say i have not noticed a shorter lifespan.

[Q] Slow charging on device

Hey,
I recently bought a used Xperia Z1 and everything is great apart from the charging. It is horrendously slow whilst charging.
I've tried charging from my home PC, office PC, two seperate AC (wall) outlets and it makes no difference. Out of curiosity I downloaded 'Battery Widget Reborn' and it showed that my device will charge 1% every 6 or so minutes and will take 12 hours for a full charge to 100%.
My Nexus 4 charged to 100% within two hours usually so this leads me to believe that something is wrong with the phone.
Normally I would go consider the battery as the main culprit but after finally getting to 100% it doesn't seem to drain particularly quickly as you would probably expect from a faulty battery. It would be nice to compare these statistics to the rest of you to see how abnormal this is.
This moves me on to the the USB slot on the device - is it possible that it is faulty and therefore pulling very little power (barely enough to charge the device whilst using moderately)?
-
If this is the case then has anyone had any experience with getting their Z1 USB slot repaired or should I just try to take the device back and get a different Z1 from somewhere else?
Does anyone have any other suggestions for me to try? There is a Sony store in my city so I could perhaps go to them for advice (as long as they don't empty my wallet)...
Thanks!

I had same experience with not original Magnetic Cable. All what is not Genuine can compromise the functionality of your device. Check first the wall charger, it have to be 0.5VDC 1500mA. then check the cable or try different one. I will recommend the Original Dock DK31. In 2 hours mine is fully charged with that one.

im not sure but mine charged extremely slow aswell but it has gotten alot faster
im assumings its some kind of break in period or something

Is the usb cable original? Or else you could get the charging dock
Sent from my Xperia Z1

ragingbull said:
Hey,
I recently bought a used Xperia Z1 and everything is great apart from the charging. It is horrendously slow whilst charging.
I've tried charging from my home PC, office PC, two seperate AC (wall) outlets and it makes no difference. Out of curiosity I downloaded 'Battery Widget Reborn' and it showed that my device will charge 1% every 6 or so minutes and will take 12 hours for a full charge to 100%.
My Nexus 4 charged to 100% within two hours usually so this leads me to believe that something is wrong with the phone.
Normally I would go consider the battery as the main culprit but after finally getting to 100% it doesn't seem to drain particularly quickly as you would probably expect from a faulty battery. It would be nice to compare these statistics to the rest of you to see how abnormal this is.
This moves me on to the the USB slot on the device - is it possible that it is faulty and therefore pulling very little power (barely enough to charge the device whilst using moderately)?
-
If this is the case then has anyone had any experience with getting their Z1 USB slot repaired or should I just try to take the device back and get a different Z1 from somewhere else?
Does anyone have any other suggestions for me to try? There is a Sony store in my city so I could perhaps go to them for advice (as long as they don't empty my wallet)...
Thanks!
Click to expand...
Click to collapse
Hi,
The phone usually takes about 3 hours to charge completely in my case, using the standard sony adapter given with the phone, probably i would suggest if you could borrow some other charger and try charging so that you can isolate the issue.(Please note the rating of the charger which you intend to charge for testing)
Also i noticed that the standard charger given by sony is 1.5A rating, so i usually charge with the charger given for my samsung tab 2 which has a higher rating and this one does a super charge in nearly 2 hours or less.
Thanks
Santosh

santro652 said:
Hi,
The phone usually takes about 3 hours to charge completely in my case, using the standard sony adapter given with the phone, probably i would suggest if you could borrow some other charger and try charging so that you can isolate the issue.(Please note the rating of the charger which you intend to charge for testing)
Also i noticed that the standard charger given by sony is 1.5A rating, so i usually charge with the charger given for my samsung tab 2 which has a higher rating and this one does a super charge in nearly 2 hours or less.
Thanks
Santosh
Click to expand...
Click to collapse
i have same problem using micro usb for charging so slow.
now i'm using magnetic cable and use 800mA charger, i'm not using 1,5A sony charger because it make my mobile so hot.

Takes around 3 hours using Sony's original magnetic charger

mm79k said:
Takes around 3 hours using Sony's original magnetic charger
Click to expand...
Click to collapse
Not for me. I am having slow charging as well. Using official Sony magnetic cable I have tried a couple different power adapters from Sony including the EP880 and even over night it won't charge it completely. Last night I plugged it in with about 37% left...woke up this morning after about 7.5 hours and it was only at 78%. Have to plug it in via USB to get any decent charging speed.

Spectre51 said:
Not for me. I am having slow charging as well. Using official Sony magnetic cable I have tried a couple different power adapters from Sony including the EP880 and even over night it won't charge it completely. Last night I plugged it in with about 37% left...woke up this morning after about 7.5 hours and it was only at 78%. Have to plug it in via USB to get any decent charging speed.
Click to expand...
Click to collapse
Then I asking my self what is different in the original Dock DK31 as it charge my phone very well.
I think that you think you have original one magnetic cable but it's not..

eclyptos said:
Then I asking my self what is different in the original Dock DK31 as it charge my phone very well.
I think that you think you have original one magnetic cable but it's not..
Click to expand...
Click to collapse
I think I would know if I had the original one or not. It came with my phone and is Sony branded.
Sent from my Surface with Windows 8 Pro using Tapatalk

Charges an hour and 30mns for me everything is original
Ps. This is a used phone got it from swappa
Sent from my C6906 using XDA Premium 4 mobile app

uhuhuh
mine took 5 hours from 0% ~> 24%

My z1 charges fine if i dont let it get below 40%. If i let the battery drop down to around 10% it takes a long time to reach 40% and then charges normally. It doesn't matter what method i use for charging it still charges the same, one observation i did make though is that when charging from a low percentage up to around 30% the phone gets very hot so it might be a good idea if we don't cycle our phones batteries so low?

I bought this phone in september this year .. the first time I charge it only takes 3 hours to full from 18% ~ 100% .. but by now it takes 24 hours for the full amount of 8% ~ 100% (︶︹︺)

solution?
Spectre51 said:
Not for me. I am having slow charging as well. Using official Sony magnetic cable I have tried a couple different power adapters from Sony including the EP880 and even over night it won't charge it completely. Last night I plugged it in with about 37% left...woke up this morning after about 7.5 hours and it was only at 78%. Have to plug it in via USB to get any decent charging speed.
Click to expand...
Click to collapse
Same problem here. Have you solved this problem? Thanks in advance.

fmode68 said:
Same problem here. Have you solved this problem? Thanks in advance.
Click to expand...
Click to collapse
Don't have the Z1 anymore but I never did figure it out. Was very sporadic when it happened.
Sent from my Xperia Z2

If you are really curious maybe grab one of these:
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Shows Volts and Ampere.
They are sold as "usb meter" in eBay/aliexpress for as low as $1.70 from China and actually work quite well.
Helps to easily spot a cheap cables(low ampere) or chargers(lots of varying voltage) that should go to the trash.

I updated to lollipop and this is happening to me now.
Before, I charge so fast, now on lollipop any charger I use is so slow even when turned off
it will take 7 hours to finish charging to 100%

I have the same problem too.. Using original charger and adapter. It took more than an hour to charge from 15%-25% even when the phone is switched off!

I would blame wake locks, cpu activity and network activity.
These phones are fast so fast they wreck the battery.
Try disabling the network or switching to 3G/2G
Have a look for any background apps eating juice.

Samsung Exynos' faster charging tech vs. Qualcomm's QuickCharge 2.0

Is anyone aware of what is this new charging standard Samsung is using for allowing 4 hours of battery in 10 mins charge?
It's definitely faster than Qualcomm's QuickCharge 2.0 but I'm not able to find any details on the specific name or tech details and I'm certain it's not a regular charger. I'm hoping to buy a few spares of these types of chargers so if anyone can provide details on this that would be great!
UPDATE: Answer confirmed! http://forum.xda-developers.com/showpost.php?p=59794206&postcount=9

honestly it's really nothing more than higher flow of electricity flowing through the USB adapter at 2A @ 9 volts ~ and a combination of higher capacity battery charge rate internally to handle the extra voltage.
i can probably get 4 hours on my S4 which also has a rapid charger, with only a 10-15 min charge... also, it's not really 4 hrs they mean of actual usage.. they probably mean that the device will have extra standby (light usage) for up to 4 hours with only 10 minutes charge., not that you will get 4 hours screen time in only 10 min charge time.
edit: it'll be a USB charger like this, which IIRC is similar to the one in the note 4 that supports the same quick charge:
http://www.amazon.com/gp/product/B00OM40K1Y/

tft said:
honestly it's really nothing more than higher flow of electricity flowing through the USB adapter at 2A @ 9 volts ~ and a combination of higher capacity battery charge rate internally to handle the extra voltage.
i can probably get 4 hours on my S4 which also has a rapid charger, with only a 10-15 min charge... also, it's not really 4 hrs they mean of actual usage.. they probably mean that the device will have extra standby (light usage) for up to 4 hours with only 10 minutes charge., not that you will get 4 hours screen time in only 10 min charge time.
edit: it'll be a USB charger like this, which IIRC is similar to the one in the note 4 that supports the same quick charge:
http://www.amazon.com/gp/product/B00OM40K1Y/
Click to expand...
Click to collapse
Hmm...if higher amps and voltage is it then I'm curious to know exactly what those specs are. 2A @ 9 volts is that confirmed? If that's the case then just a higher amp QuickCharge 2.0 charger should be enough I'm guessing since we know it supports 9 volts along with the standard 5 volts as well.
And of course I know that "up to 4 hours usage" is to be taken with the best case scenario as usual (standby time) but nevertheless they did claim multiple times very cleary that they have the fastest charging solution on the market (counting QuickCharge 2.0 which has been out for a while so no way they can't be accounting for that I hope).
I'm reading here about this charger:
http://www.samsung.com/us/mobile/cell-phones-accessories/EP-TA20JWEUSTA
This Samsung charger has an output of 2 Amp to give your phone power at a much faster rate than your typical 1 Amp or 700mAh charger.
Click to expand...
Click to collapse
Pretty standard stuff so far, there are plenty of 2 Amp chargers out there already.
Additionally, it comes packed with Adaptive Fast Charging technology that will charge Samsung devices with that feature built-in at an even faster rate!
Click to expand...
Click to collapse
Do we know if that "Adaptive Fast Charging technology" is just extra voltages (like 9 and 12 volts) just like Qualcomm's basically? Or is it truly unique to Samsung devices that other devices can't take advantage of?

According to this looks like that's right. It's just an additional 9 volts (missing the third 12 volts like other Qualcomm QuickCharge 2.0 chargers).
http://www.amazon.com/Samsung-Adaptive-Charging-EP-TA20JWE-Universal/dp/B00PIZ5JB2/
Output/Sortie:
9.0V--1.67 A or 5.0V--2.0A
Click to expand...
Click to collapse
So if we got this right then as long as we have any QuickCharge 2.0 charger it should work the same way with Samsung's AFC technology.
(assuming there's no security chip preventing otherwise - Samsung has done similar things in the past)

yes, they should technically be compatible with each other. you''ll also be able to use the S6 charger on say another device that is only rated at 5V, that's basically what adaptive means,. 5 or 9V. or whatever else the charger is rated for.

Is it that you need this smart & security fast-charge cable ?
http://goo.gl/z3lv3w

jangofei said:
Is it that you need this smart & security fast-charge cable ?
http://goo.gl/z3lv3w
Click to expand...
Click to collapse
I tested a generic QUALCOMM 2.0 charger with an Samsug s 6 and worked with no warnings and provided message that 'fast charger' was being used

Samsung's own website does mention something about Quick Charge 2.0, which means that they're probably using Qcomm power management ICs.

Looks like the stock Galaxy S6 Edge AFC adapter is just 5v and 9v like all QC 2.0 chargers are. That's good to know that any QC 2.0 charger should work as a great spare as well. :good:
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A 2600mAh lithium battery (@3.8v) should be 9.88Wh.
This charger can charge at [email protected] == 10 Watts, or [email protected] == 15 Watts.
Charging at maximum wattage for the Samsung charger would be charging at about 1.5C. Battery experts used to recommend not charging faster than 1C (at least as far as the wealth of information on the Battery University site goes), but I guess they've made advancements in the longevity of lithium these days.
Assuming the quick charge specs listed are measuring the part of the curve that can charge at maximum wattage, 15 Watts for 10 minutes is 2.5 Watts / 3.8v == 658mAh, or about 1/4 of the battery capacity.
The "100% in an hour" (I've seen that in press releases, but couldn't find that figure on Samsung's web site) is exactly 1C over all, but since lithium batteries are charged on a curve it will likely be charging at this 15 Watts for only part of its time on the charger and then drop down even below 1C for the last part until it is 100%. It would be interesting to see if it can get a full 50% in 20 minutes or if it can only do full charge for about 25% of the capacity in the best case scenario part of the curve. Also, over what range of initial SoC is the 25% still valid? It's doubtful it can charge that fast if it starts at 75% because the biggest cutbacks in charging tend to be on the "full" end of the scale. I believe that charging circuits will tend to also "take things slowly" when starting near 0%, but 10-35% should be doable, possibly 25-50%. Now if only I had an hour with nothing to do but stare at a phone's battery percentage and record figures...

flarbear said:
A 2600mAh lithium battery (@3.8v) should be 9.88Wh.
This charger can charge at [email protected] == 10 Watts, or [email protected] == 15 Watts.
Charging at maximum wattage for the Samsung charger would be charging at about 1.5C. Battery experts used to recommend not charging faster than 1C (at least as far as the wealth of information on the Battery University site goes), but I guess they've made advancements in the longevity of lithium these days.
Assuming the quick charge specs listed are measuring the part of the curve that can charge at maximum wattage, 15 Watts for 10 minutes is 2.5 Watts / 3.8v == 658mAh, or about 1/4 of the battery capacity.
The "100% in an hour" (I've seen that in press releases, but couldn't find that figure on Samsung's web site) is exactly 1C over all, but since lithium batteries are charged on a curve it will likely be charging at this 15 Watts for only part of its time on the charger and then drop down even below 1C for the last part until it is 100%. It would be interesting to see if it can get a full 50% in 20 minutes or if it can only do full charge for about 25% of the capacity in the best case scenario part of the curve. Also, over what range of initial SoC is the 25% still valid? It's doubtful it can charge that fast if it starts at 75% because the biggest cutbacks in charging tend to be on the "full" end of the scale. I believe that charging circuits will tend to also "take things slowly" when starting near 0%, but 10-35% should be doable, possibly 25-50%. Now if only I had an hour with nothing to do but stare at a phone's battery percentage and record figures...
Click to expand...
Click to collapse
the 1C rule no longer applies. it's been years since that was the general rule. i run alot of different batteries for my hobbies and i charge some of them upwards of 3 - 4C.
imo, quick charge, fast charge, or whatever they want to call it, is just mostly marketing. the battery do charge slightly faster, but not much faster than at 5v @ 2A. my S4 can go from 5% to 50% in about 30 minutes, yet it's not "quick charge" just the 5v @ 2A.
in my opinion, i would much rather charge without using quick charge on an S6 because for that 5-10min faster charge it might offer, it'll just put unnecessary wear on the battery. considering that the s6 has no removable battery and if you plan to keep your device long-term (say upwards of 2 years) then id avoid using quick charge all together, including wireless charging which creates even more battery wear (more heat).
i do believe charge speed is slightly less important than charging capacity, so i don't even plan to always charge my s6 to 100%. li-ion battery will last longer if they are kept under 4.10v. might gain an extra 200 cycles by not maxing out the battery all the time.
if the battery were easy to swap, i wouldn't care, but i plan to have the phone for at least 2 years so i want to retain max life from the internal battery, hence why i dont care much for quick charge. getting to 50% battery 10 mins quicker is minor to me so ill be sticking to normal 5V charger.

riki66 said:
So basically this car charger http://www.amazon.com/gp/product/B00D82O68Y/ should charge my s6 edge as fast as possibile right??
And there's no need to buy a "qualcomm 2.0 quick charge" car charger because it would just" adapt" to the power requirement of the s6, correct?
Click to expand...
Click to collapse
I don't know enough details about how Quick Charge works to be able to answer this. The device looks like it always supplies 5v, but up to 4.8A to yield 24 watts. It also doesn't distinguish if it is actually a 12w+12w charger or if either side can draw the full 24 watts. Does the S6 fast charge off of 5v, or does it require the 9v output to do its magic? The Amazon listing does list the S6 and S6 Edge in its description so "maybe". If it simply supplied 5v and the S6 decided to only draw 2A from a 5v charger then you may not get as fast of a charge (10 watt vs 15 watt) compared to a charger that claimed Quick Charge 2.0 compatibility and might supply 9v.

Do you guys know if there are apps that prevent to charge up to 100%?
Lets say where you can set a max of 90%.

streilu said:
Do you guys know if there are apps that prevent to charge up to 100%?
Lets say where you can set a max of 90%.
Click to expand...
Click to collapse
Tasker can notify you when it reaches 90%, maybe. No app can stop the phone from charging, though.

jangofei said:
Is it that you need this smart & security fast-charge cable ?
http://goo.gl/z3lv3w
Click to expand...
Click to collapse
You need a charger that has - Qualcomm® Quick Charge 2.0 Technology
not one that says - PowerIQ Technology
Hope that helps

Something is Fishy
I've tested the S6 Edge with Multiple Chargers (my lady has the S6 Edge too). When I use my Samsung Charger at 20% Battery it says 3hrs 10min to full. When I use the charger that came with my LG G2, it says 1hr 30min to full. Seems like Samsung went cheap. I tried her charger too, different outlets, even at a different house. Fast Charger my butt

Samsung and Intel are using the Qualcomm tech with some slight modifications which can be done without paying royalties leaving the only truly different technology to Oppo. The spec requires an embedded controller on the SOC and the associated circuitry which allows the device (phone in this case) to control the charge coming from the charger. The quick charge tech works the fastest with (mostly) depleted batteries which can take more juice more quickly and is less effective with battery topping where the battery cant accept charge as quickly without overheating.
I've read a couple people saying they had non functioning chargers out of the box, I would try someones quick charger known to work ctrlaltdelete and see if that isn't the case with you. You should get much faster charging, The Oppo charger will not work with our devices but all the QC 2.0 chargers I have tried do work at the same speed as the supplied charger on my Edge. It's impossible for a functioning quick charge charger to need 3 hrs to charge this phone. The math simply wont allow it.

Just wanted to ask a quick question , which one charges faster the adaptive fast charging or quick charge 2.0 ?

Charging speed

To power up, you consume Red Bull. But your phone just needs its adaptive fast charger. Rate this thread to express how quickly the HTC 10 can charge. A higher rating indicates that it charges extremely fast.
Then, drop a comment if you have anything to add!

I don't know but I am not getting so called "15 minutes to 50%" charging speed at all with the provided charger and cable, although it's showing "quick charger is connected".
Sent from my HTC 10 using Tapatalk

nipun1110 said:
I don't know but I am not getting so called "15 minutes to 50%" charging speed at all with the provided charger and cable, although it's showing "quick charger is connected".
Sent from my HTC 10 using Tapatalk
Click to expand...
Click to collapse
I thought it was 30 minutes for 50% - http://www.htc.com/us/smartphones/htc-10/
I don't necessarily get that either per se. I remember getting 50% in 35 minutes tho. http://www.androidcentral.com/qualcomm-announces-quick-charge-30-0-80-35-minutes
I got 44 in 30 minutes. The thing that annoys me is Qualcomm Quick Charge 3.0 is supposed to give you 80% in 35 minutes, but HTC claims to only give you 50%, which is no faster than Qualcomm Quick Charge 2.0, which in reality is even slow than that. Qualcomm Quick Charge 2.0 promised 60% in 30 minutes. So it's like what's the point of having a new technology that isn't better than the previous iteration....

deleted...found appropriate thread.

PryvateiDz said:
I thought it was 30 minutes for 50% - http://www.htc.com/us/smartphones/htc-10/
I don't necessarily get that either per se. I remember getting 50% in 35 minutes tho. http://www.androidcentral.com/qualcomm-announces-quick-charge-30-0-80-35-minutes
I got 44 in 30 minutes. The thing that annoys me is Qualcomm Quick Charge 3.0 is supposed to give you 80% in 35 minutes, but HTC claims to only give you 50%, which is no faster than Qualcomm Quick Charge 2.0, which in reality is even slow than that. Qualcomm Quick Charge 2.0 promised 60% in 30 minutes. So it's like what's the point of having a new technology that isn't better than the previous iteration....
Click to expand...
Click to collapse
Funny thing is I'm getting less heat and faster total charge time off my QC 2.0 charger. Either of my HTC QC 3.0 chargers are slower and get the phone much hotter (I'm assuming due to the higher fluctuating voltage 3.0 offers).
On 3 charge tests the 2.0 beats the 3.0 charger by a good 10 minutes.

datafoo said:
Funny thing is I'm getting less heat and faster total charge time off my QC 2.0 charger. Either of my HTC QC 3.0 chargers are slower and get the phone much hotter (I'm assuming due to the higher fluctuating voltage 3.0 offers).
On 3 charge tests the 2.0 beats the 3.0 charger by a good 10 minutes.
Click to expand...
Click to collapse
I haven't really had a heat issue while charging. But I'm going to try my Anker Powerport +1 Wall Charge (Qualcomm Quick Charge 2.0, also with Voltageboost and PowerIQ), though I've been using that one to charge my Nextbit Robin. I'll see if that makes a difference. I like that HTC including a Quick Charger, but I don't necessarily think it's the best compared to other competitors.

PryvateiDz said:
I thought it was 30 minutes for 50% - http://www.htc.com/us/smartphones/htc-10/
I don't necessarily get that either per se. I remember getting 50% in 35 minutes tho. http://www.androidcentral.com/qualcomm-announces-quick-charge-30-0-80-35-minutes
I got 44 in 30 minutes. The thing that annoys me is Qualcomm Quick Charge 3.0 is supposed to give you 80% in 35 minutes, but HTC claims to only give you 50%, which is no faster than Qualcomm Quick Charge 2.0, which in reality is even slow than that. Qualcomm Quick Charge 2.0 promised 60% in 30 minutes. So it's like what's the point of having a new technology that isn't better than the previous iteration....
Click to expand...
Click to collapse
Good point....so I'm not alone
Sent from my HTC 10 using Tapatalk

My HTC 10 charger stop working.. It doesn't charger my HTC 10 anymore. Anyone else faceing such kind of issue? It suddenly stops working during charging..

I get about 38 minutes to full from 20%
Gets a little warm, but not any hotter than when I have snapchat open.

janjan said:
My HTC 10 charger stop working.. It doesn't charger my HTC 10 anymore. Anyone else faceing such kind of issue? It suddenly stops working during charging..
Click to expand...
Click to collapse
Yes I saw that my charger is incapable of charging my device as it is too slow. It happened for a few minutes. Then I pulled out n in the cable for a few times and it corrected itself don't know how. I am scared. I had great faith on HTC hardwares from my past experience.
Edited: "charger is not compatible....." was a custom kernel issue.
Sent from my HTC 10 using Tapatalk

Did a test:
QC 3.0 (Charger from the box): +45% in 30 minutes
QC 2.0 (Moto Turbocharger): +37% in 30 minutes

hey guys , i bought 10 today
i have a question about charging with power banks , its ok if charging with my Xiaomi Power bank ?

I don't see why not. It will charge slower than with a QC 2.0/3.0, but it should work fine. I have a lot of power banks in my backpack and I use them all the time with any phone I have on me...

Blubb
Haldi4803 said:
So.... here we go. First full charging Benchmark on my HTC 10 completely logged with an USB Powermeter.
From 1% to 100% takes 95 Minutes.
Statistics from BatteryLog app
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"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
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And the Voltage and Current recorded via external Powermeter.
Funny How the charge control completely kills the charging to switch Voltage in Big steps.... as seen on Minute 10 and 48.
Another fun fact is that we see the Battery reach 100% After 95 Minutes.
But does it stop charging? No!
It continues until 150 Minutes..... yes no joke. 2.5 hours! That's 1 hour longer than it needed to reach 100%
And one more Longtime Charge.
What happens if you leave your charger connected over night?
(Nope, not the same date as the 3 above, was on another charge)
(If the pictures are to small, blame Tapatalk resize algorithm. I will Upload full size when I'm back at my PC, which might be somewhen between 2 and 6 months.)
Click to expand...
Click to collapse

Fast! 2.5A is fast!

Mines been plenty quick for me, but its the first phone I've had where I've had the quick charge charger too. I understand the m8 had it though, which was my previous phone.
However, I'm grateful that it isnt crazy fast. The last thing the world needs is another exploding phone lol

my phone stop charging rapidly

a2fast said:
my phone stop charging rapidly
Click to expand...
Click to collapse
If you have a ROM with a custom Kernel, check there first. The fast charge is a setting that can be turned on or off.

from 0~100%, when using the supply QC 3.0 charger it need about 1h35mins, with my anker 5 port 40w charger, it charger at 5V 2A at begining and slowly down to about 1.4a after 70~80%, around 1a when over 90%, total time need is about 2h.
I am using a usb voltage meter to check the voltage/amp.

Hi, i got a htc m10 from second hand, it came with a original htc charger and cable. But charger output is 1.5amps. And i dont feel like "super fast" Thats the real amp for the htc 10 chsrger?

Question S21 Ultra charging slowly with 25W charger

My S21 Ultra is taking 1 hour & 30 minutesh to charge from 5-100% with the Samsung 25W super fast charger and the cable supplied with the S21 Ultra.
And I have fast charging and super fast charging enabled on my device.
All the user reviews & battery charging tests online show that the S21 Ultra takes roughly between 1 hour 9 minutes to 1 hour 15 minutes to do a full charge from 0-100% with the Samsung 25W Super fast charger.
Any idea what is going wrong here? Is it an issue with the phone, cable, or charger?

SgtRepeat said:
My S21 Ultra is taking 1 hour & 30 minutesh to charge from 5-100% with the Samsung 25W super fast charger and the cable supplied with the S21 Ultra.
And I have fast charging and super fast charging enabled on my device.
All the user reviews & battery charging tests online show that the S21 Ultra takes roughly between 1 hour 9 minutes to 1 hour 15 minutes to do a full charge from 0-100% with the Samsung 25W Super fast charger.
Any idea what is going wrong here? Is it an issue with the phone, cable, or charger?
Click to expand...
Click to collapse
Make sure you use official 25w pps wall adapter. I'm using electjet 65w 3 port adapter as it fit the best replacement for my needs. Its also a good value on amazon with fast shipping. Official samsung should work too but so far I get around 1 hr to full charge from 3% if i leave it alone.

motodeveloper3800 said:
Make sure you use official 25w pps wall adapter. I'm using electjet 65w 3 port adapter as it fit the best replacement for my needs. Its also a good value on amazon with fast shipping. Official samsung should work too but so far I get around 1 hr to full charge from 3% if i leave it alone.
Click to expand...
Click to collapse
I'm using the official Samsung 25W super fast charger. It is with this charger that it is taking me 1 hour & 30 minutes to get from 5-100%.
Any suggestions on what I should do?

I've found that u should close all apps and just leave the phone alone it usually takes less than an hour for my s21 ultra to get 100%

jmontalbo said:
I've found that u should close all apps and just leave the phone alone it usually takes less than an hour for my s21 ultra to get 100%
Click to expand...
Click to collapse
I've done that. I've even switched off the phone at 5% & charged it. It takes 1 hour 23 minutes with the phone switched off to get to 100%.

SgtRepeat said:
I've done that. I've even switched off the phone at 5% & charged it. It takes 1 hour 23 minutes with the phone switched off to get to 100%.
Click to expand...
Click to collapse
Read this thread:
Which 3rd Party Charger
Hi, i am just wondering, which Charger should i buy for the S21 Ultra, as i need more, i would buy them not from samsung. Do you have recommendations?
forum.xda-developers.com
You're charging it like it's a NiCad. Not great for the battery or for time.
Li's wuv frequent midrange charging and that can extent their life by hundreds even thousands of full charge cycles.

blackhawk said:
Read this thread:
Which 3rd Party Charger
Hi, i am just wondering, which Charger should i buy for the S21 Ultra, as i need more, i would buy them not from samsung. Do you have recommendations?
forum.xda-developers.com
You're charging it like it's a NiCad. Not great for the battery or for time.
Li's wuv frequent midrange charging and that can extent their life by hundreds even thousands of full charge cycles.
Click to expand...
Click to collapse
But that isn't the issue, is it? There is some fault here because of which my phone isn't charging as fast as other people's phones.
Regardless of the damage to my battery life, I should be getting the charging speeds that everybody else is getting with the S21 Ultra. Everyone who charges the phone from 0-100% gets a full charge in 1 hour 10 minutes. I'm trying to find out why that isn't happening with my unit.

SgtRepeat said:
But that isn't the issue, is it? There is some fault here because of which my phone isn't charging as fast as other people's phones.
Regardless of the damage to my battery life, I should be getting the charging speeds that everybody else is getting with the S21 Ultra. Everyone who charges the phone from 0-100% gets a full charge in 1 hour 10 minutes. I'm trying to find out why that isn't happening with my unit.
Click to expand...
Click to collapse
What's the start temp at charging?
Is it exceeding 100°F when charging?
Have you tried another OEM 25w brick/cable?
Make sure plug is fully inserted into brick.
You tried clearing system cache, hard reboot and toggling the fast charging switch on/off 3 times?
Is there any case bulging?
If you're within your return window, get another one instead of going down with the ship.

blackhawk said:
What's the start temp at charging?
Is it exceeding 100°F when charging?
Have you tried another OEM 25w brick/cable?
Make sure plug is fully inserted into brick.
You tried clearing system cache, hard reboot and toggling the fast charging switch on/off 3 times?
Is there any case bulging?
Click to expand...
Click to collapse
The start temp is around 98°F while charging.
I have tried another Samsung 25W super fast charger and it still took 1 hour 30 minutes to get from 5-100%.
The plug is fully inserted.
There is no bulging of the case.
I've tried toggling off the fast charging switch & only enabled the super fast charging switch. It took 1 hour 37 minutes this time.

One factor that all of those YouTubers fail to mention is the temperature of the room that the device is in. Sure they take the temperature of the phone itself, but none of them take into account the room's temps. They don't seem to care about a more scientific approach, just AdSense payout.

Sharpshooterrr said:
One factor that all of those YouTubers fail to mention is the temperature of the room that the device is in. Sure they take the temperature of the phone itself, but none of them take into account the room's temps. They don't seem to care about a more scientific approach, just AdSense payout.
Click to expand...
Click to collapse
The temperature of my room is around 30°C. Will it make that much of a difference that the charging time is prolonged by 20 minutes?

SgtRepeat said:
The start temp is around 98°F while charging.
I have tried another Samsung 25W super fast charger and it still took 1 hour 30 minutes to get from 5-100%.
The plug is fully inserted.
There is no bulging of the case.
I've tried toggling off the fast charging switch & only enabled the super fast charging switch. It took 1 hour 37 minutes this time.
Click to expand...
Click to collapse
At 98F unless you cool it if fast charging* engages it will quickly reach 101F or so and then either ramp the charging rate down or stop charging altogether.
It's possible the battery is damage or the C port PCB is defective. Both will cause erratic fast charging.
*fast charging creates a lot of waste heat, fast.

blackhawk said:
At 98F unless you cool it if fast charging* engages it will quickly reach 101F or so and then either ramp the charging rate down or stop charging altogether.
It's possible the battery is damage or the C port PCB is defective. Both will cause erratic fast charging.
*fast charging creates a lot of waste heat, fast.
Click to expand...
Click to collapse
I'm dreading to take the phone to the Samsung service centre as they almost always format the phone & I have around 400 GB of data in the phone. It'll take me a few days to restore the apps & data back to the phone.

SgtRepeat said:
The temperature of my room is around 30°C. Will it make that much of a difference that the charging time is prolonged by 20 minutes?
Click to expand...
Click to collapse
Once the battery temp is at 98F you need to cool it. A damp microfiber cloth and a fan work well in dry climate.
You want the battery temperature between 85-95F for best fast charging rates. That's what I've observed. You'll get best results doing midrange partial charges to below 72% ie 40-70%

blackhawk said:
Once the battery temp is at 98F you need to cool it. A damp microfiber cloth and a fan work well in dry climate.
You want the battery temperature between 85-95F for best fast charging rates. That's what I've observed. You'll get best results doing midrange partial charges to below 72% ie 40-70%
Click to expand...
Click to collapse
I'll try that.
However, I'll start doing partial charges only when I know that my phone charges at the speed that everyone else gets (0-100% in 1 hour 10 minutes). Wouldn't want to be stuck with a faulty phone.

SgtRepeat said:
I'm dreading to take the phone to the Samsung service centre as they almost always format the phone & I have around 400 GB of data in the phone. It'll take me a few days to restore the apps & data back to the phone.
Click to expand...
Click to collapse
Meh... that's why you always get an SD card slot.
No need to do that right away if there not going to replace it with a new one. Sellers give you a 10 day grace period usually. AT&T does.

SgtRepeat said:
I'll try that.
However, I'll start doing partial charges only when I know that my phone charges at the speed that everyone else gets (0-100% in 1 hour 10 minutes). Wouldn't want to be stuck with a faulty phone.
Click to expand...
Click to collapse
Look they don't always fast charge at the same rate even when working correctly.
My latest charge log... this is at near ideal temperatures too.
You can see when charging in the midrange that averages about 2%@minute until 70-80% where it frequently starts to ramp down.

blackhawk said:
Meh... that's why you always get an SD card slot.
No need to do that right away if there not going to replace it with a new one. Sellers give you a 10 day grace period usually. AT&T does.
Click to expand...
Click to collapse
Unfortunately, the S21 Ultra doesn't have an SD card slot.
Also, I live in India where the Samsung customer service is absolutely terrible. Their only solution to all issues is to reformat the phone.

blackhawk said:
Read this thread:
Which 3rd Party Charger
Hi, i am just wondering, which Charger should i buy for the S21 Ultra, as i need more, i would buy them not from samsung. Do you have recommendations?
forum.xda-developers.com
You're charging it like it's a NiCad. Not great for the battery or for time.
Li's wuv frequent midrange charging and that can extent their life by hundreds even thousands of full charge cycles.
Click to expand...
Click to collapse
Replacement Batteries are cheapbo
SgtRepeat said:
My S21 Ultra is taking 1 hour & 30 minutesh to charge from 5-100% with the Samsung 25W super fast charger and the cable supplied with the S21 Ultra.
And I have fast charging and super fast charging enabled on my device.
All the user reviews & battery charging tests online show that the S21 Ultra takes roughly between 1 hour 9 minutes to 1 hour 15 minutes to do a full charge from 0-100% with the Samsung 25W Super fast charger.
Any idea what is going wrong here? Is it an issue with the phone, cable, or charger?
Click to expand...
Click to collapse
Sell it and get the mi 11 ultra

SgtRepeat said:
Unfortunately, the S21 Ultra doesn't have an SD card slot.
Also, I live in India where the Samsung customer service is absolutely terrible. Their only solution to all issues is to reformat the phone.
Click to expand...
Click to collapse
Yeah I know... that's for the next phone.
I did the same thing you're doing until I realized I could use the SD card as a data drive. No more 6+ hour reloads.
I doubt a factory reset will help but give it a shot before taking it in for service.
Just keep an eye open for any signs of battery swelling. If the charger and cable are good it's probably the C port pcb.

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