Database Develop

Wall charger and charging time

After I read several infos about this topic ...
Is that true that the Nexus S has limit of the amount of power it takes from the wall charger?
Suppose, it has limit of 750 mA.
Even if we use 1000 mA or 2000 mA, the Nexus S will take 750 mA during charging.
So, having much bigger mA charging rate will NOT speed up the charging time.
Am I correct?
Yesterday, I checked my Nexus S during wall charging:
65% charged at 01:57
87% charged at 02:48
So, it is about 22% per 50 minutes.
100% = 227 minutes (3 hours 47 minutes) ... almost 4 hours.
No task was performed, except turning on screen to check batt %.
And I was using HTC Desire charger (5v 1000 mA).
How long is yours?

gogol said:
After I read several infos about this topic ...
Is that true that the Nexus S has limit of the amount of power it takes from the wall charger?
Suppose, it has limit of 750 mA.
Even if we use 1000 mA or 2000 mA, the Nexus S will take 750 mA during charging.
So, having much bigger mA charging rate will NOT speed up the charging time.
Am I correct?
Yesterday, I checked my Nexus S during wall charging:
65% charged at 01:57
87% charged at 02:48
So, it is about 22% per 50 minutes.
100% = 227 minutes (3 hours 47 minutes) ... almost 4 hours.
No task was performed, except turning on screen to check batt %.
And I was using HTC Desire charger (5v 1000 mA).
How long is yours?
Click to expand...
Click to collapse
Using an iPhone (1000mA) nubby it takes sometimes over four hours to charge mine

It definitely seems limited to me - though it seems that 1-2A chargers do cut 10-20% off of the charging time of the .7A stock charger. I said 30% in another thread, but further testing indicates that's not the case. Maybe the limit is around 750 or 800mA, and the stock charger doesn't really give .7 ?

if you want to charge the battery real fast
don't charge inside the phone
use a Wall charger for the battery, and it charges 100% in a little over 2 hours
the ones you find on eBay or Deal Extreme
find the ones that charges at 1000 mAh
you wont find any wall chargers for 2000 mAh (only available for cars)
the highest i've seen for wall is 1200 mAh
in my case it came in a combo so i got 2 extra batteries + wall charger

AllGamer said:
if you want to charge the battery real fast
don't charge inside the phone
use a Wall charger for the battery, and it charges 100% in a little over 2 hours
the ones you find on eBay or Deal Extreme
find the ones that charges at 1000 mAh
you wont find any wall chargers for 2000 mAh (only available for cars)
the highest i've seen for wall is 1200 mAh
in my case it came in a combo so i got 2 extra batteries + wall charger
Click to expand...
Click to collapse
Could you share the ebay link please? Thanks!

[Q] Does your razr I charge very slowly?

I've noticed that if I try to charge my razr I with my car charger (2000ma USB griffin cigarette ) it charges quickly.
If I try the same with my ipad charger it seems to go really slow?
The ipad charger should also output 2000ma so I don't know why it's charging slowly unless the razr i is limiting the amount of current it is drawing?

Bigger battery, more charging to do. One guy, somewhere on here, posted a chart showing the speed and duration of his charging. It took about 2 hours for a full charge. Know that generally, phones are made to accept a charge faster for the first 30/40/50% of the cycle and to charge more normally after that.

You just have to make some counts. The charger charges at 900 mAh. So you need 2 hours and 10 minutes (more or less) to charge all the 2000 mAh battery. Maybe you use a different charger that charges more mAh.

Problem with HTC One charger, defective?

i am using an app called battery monitor widge from the play store t and have logs for the past day .
its showing different values when charging with the stock HTC charger.
Not sure if the phone or battery circuit does this , it seems the charging on the htc charger is on/off... like charging in pulses
sometimes +600 mah, stops , sometimes _ +300 mah stops , sometimes - xxx mah ...
i think its trickle charging they say the phone trickle charges after 80%. but the prob here is on the HTC charger the charge is fluctuating even below 80%
i tried a note 1 charger which has the same rating as the HTC charger. same behaviour
so it tells me the battery does not like 1A
then i switched to a 700 ma samsung charger . so far it shows a constant current of 800 mah...there is no on/off behaviour
and there is a constant charging current applied except that around 90% onwards the charge tapers off
I seem to recall reading something on the web a long time ago that said that charging at less than 1C could actually result in a faster charge to 80-90% charge.
The rationale being that if you charge at a higher rate, it forces the voltage up to the maximum faster and then the charger has to ramp down the current faster.
If you charge at say 0.7C then it takes longer for the voltage to hit the maximum and then, counterintuitively, the average current for the duration of the charge is actually higher.
I am tested this theory now... but it seems like it could be true.
using samsung charger rated @ 7C and using the battery monitor app, the samsung charger is keeping the phone charged at a constant 700 mah but the HTC charger is fluctuating from 500+ mah to 600 mah ten sometimes to 900 mah
not sure why the samsung charger seems to charge the HTC one faster than the HTC charger..
cant explain why though
They say there are different chargers behave differently with different batteries.
can someone care to share some light here?
is the HTC charger defective?

Magpir said:
i am using an app called battery monitor widge from the play store t and have logs for the past day .
its showing different values when charging with the stock HTC charger.
Not sure if the phone or battery circuit does this , it seems the charging on the htc charger is on/off... like charging in pulses
sometimes +600 mah, stops , sometimes _ +300 mah stops , sometimes - xxx mah ...
i think its trickle charging they say the phone trickle charges after 80%. but the prob here is on the HTC charger the charge is fluctuating even below 80%
i tried a note 1 charger which has the same rating as the HTC charger. same behaviour
so it tells me the battery does not like 1A
then i switched to a 700 ma samsung charger . so far it shows a constant current of 800 mah...there is no on/off behaviour
and there is a constant charging current applied except that around 90% onwards the charge tapers off
I seem to recall reading something on the web a long time ago that said that charging at less than 1C could actually result in a faster charge to 80-90% charge.
The rationale being that if you charge at a higher rate, it forces the voltage up to the maximum faster and then the charger has to ramp down the current faster.
If you charge at say 0.7C then it takes longer for the voltage to hit the maximum and then, counterintuitively, the average current for the duration of the charge is actually higher.
I am tested this theory now... but it seems like it could be true.
using samsung charger rated @ 7C and using the battery monitor app, the samsung charger is keeping the phone charged at a constant 700 mah but the HTC charger is fluctuating from 500+ mah to 600 mah ten sometimes to 900 mah
not sure why the samsung charger seems to charge the HTC one faster than the HTC charger..
cant explain why though
They say there are different chargers behave differently with different batteries.
can someone care to share some light here?
is the HTC charger defective?
Click to expand...
Click to collapse
Even I will like to know. I have been using the blackberry charger for charging my HTC one. The charger is rated 5V, 700 mA. Is it safe to use it permanently with HTC One.

QuickCharge 2.0 tests

I bought a few QC2.0 chargers for my AT&T G4:
2-pack Samsung Adaptive Fast Charge AC chargers: .walmart.com/ip/45734981
Tronsmart Dual Car charger: .ebay.com/itm/191645992162
Aliexpress knock-off single QC2.0 car charger: .aliexpress.com/item/Qualcomm-Quick-Charge-2-0-Stand-USB-QC2-0-Car-Charger-for-Samsung-Galaxy-S6-HTC/32364542508.html
..... and compared with the performance of the STOCK LG G4 1.8 Amp (non-QC2.0) charger.
[Note: front end of URLs ( h tt p : w w w.....) left off since newbies like me can not post external links]
I charged my G4 with power OFF, and used Battery Monitor Widget
( play.google.com/store/apps/details?id=ccc71.bmw )
to measure before and after % remaining,
I "generally" began the charge cycle when the %remaining was low (3-16%, 11% average)
and charged for about an hour (52 minute average)
For each I repeated the test 2-3 times.
Here are the results:
Stock Charger: 1.033 avg, 1.04 max % per minute
Samsung: 1.249 avg, 1.300 max % per minute
Tronsmart: 1.248 avg, 1.290 max % per minute
AliExpress: 1.221 avg, 1.270 max % per minute
So.... even though QC2.0 CLAIMS to charge up to 75% faster, my results were closer to 25% faster
All the QC2.0 chargers were rather consistent in their performance.
I found ambient temperature was an important factor.
The 1st test with the AliExpress was done in a closed car on a 110F day (without AC on)
I got 0.25%/min - but disqualified this result due to the temp extreme
(All other car charger tests were done with car running while driving with AC on)
I'd be interested in seeing if anyone else can test their chargers similarly and post the results here.

I thought QC chargers only quick charged QC compatible devices?
G4

And G4 is QC2.0 compatible, isn't it?
Sent from my LG-H815 using Tapatalk

iresq said:
I thought QC chargers only quick charged QC compatible devices?
G4
Click to expand...
Click to collapse
They do. The Qualcomm website claims that G4 is QC 2.0.
https://www.qualcomm.com/products/snapdragon/quick-charge
Sent from my LG-H811 using Tapatalk

I would think testing closer to 70° would be wiser.

I get this spike using my 2.0 charger, it never stays that high for longer than 10seconds.
Sent from my LG-H811

Que QC 2.0 on the G4 is a joke, it barely doesn't even exist.

I can't even use my quickcharge 2.0 charger. Anyone know why that may be the case? I'm on software version G, the charger works perfectly fine with my note 4 for quick charge but not on the G4... It's a GETWOW qualcomm quick charge 2.0 charger

csdj92 said:
I get this spike using my 2.0 charger, it never stays that high for longer than 10seconds.
Sent from my LG-H811
Click to expand...
Click to collapse
Your battery is 90% full, is it any different if your battery is lower, like 10%?

My Keedox qc 2.0 is charging my g4 faster than my ex-m9! It can fully charge from 45 to 100% in 30 mins only, it was 50 mins with the m9!!!

No complaints from my Quick Charger

Ive got the uk plug aukey single port quick charge 2.0. Did a timed charge last night 14->48% 25minutes (1.36%/minute), 48->71% 16 minutes (1.44%/minute), 71->92% 19minutes (1.11%/minute) - total time from 14% to 92% one hour (1.3%/min) so about the same as OP test.

With custom kernel we should be able to reach much higher charging rates...on g2 with dorimanx kernel i never saw anything below 1600 and got up to 21xx

didi_ghost said:
Que QC 2.0 on the G4 is a joke, it barely doesn't even exist.
Click to expand...
Click to collapse
Agree. I use aukey QC 2.0 3 port. Using QC 2.0 port, or just the same charging time using stock charger. From 5%-100%, both need time about 105 minute. No different. I sold my aukey.
Aukey using 9v (8.9v exactly) and 5v for stock charging.
Sent from my LG-H818 using Tapatalk

[ROG 2 - 8GB/128GB] Battery Charge time with in box charger

Conditions:
-Room with a temperature of 21 C.
-Phone Off.
-Charged the phone from 0% to 100%.
Charge time in 1 hour 5 Min is 60%.
Charge time in 1 hour 39 Min is 86%.
Charge time in 1 hour 50 Min is 93%.
Charge time in 2 hours is 96%.
Charge time in 2 hours 18 Min is 100% Fully charged.

We need the 30w charger

rowihel2012 said:
We need the 30w charger
Click to expand...
Click to collapse
I don't have it, and with such stats I don't think I need one.
It's not worth paying 43 USD (currently the price) to get one.

Rashad83 said:
Conditions:
-Room with a temperature of 21 C.
-Phone Off.
-Charged the phone from 0% to 100%.
Charge time in 1 hour 5 Min is 60%.
Charge time in 1 hour 39 Min is 86%.
Charge time in 1 hour 50 Min is 93%.
Charge time in 2 hours is 96%.
Charge time in 2 hours 18 Min is 100% Fully charged.
Click to expand...
Click to collapse
same ur result. 2h 15 mins.
30w as review was 1 hours 48 mins. Not worst to buy

Can you post all the wallpapers?

MishaalRahman said:
Can you post all the wallpapers?
Click to expand...
Click to collapse
Sure but "setaswall"website already got them.
https://www.setaswall.com/asus-rog-phone-2-stock-wallpapers/

rowihel2012 said:
We need the 30w charger
Click to expand...
Click to collapse
does tencent edition support 30w charger?

asri009 said:
does tencent edition support 30w charger?
Click to expand...
Click to collapse
Of course!

i prefer the 18 w fast charged since it wont degrade the battery as fast as 30 w fast charger. of course a 6000 mah is more difficult to degrade, but the life span will be better with 18w charger
the tencent edition 8/128 is a best buy.. not worth the global 12/512gb . only it has little more bands, all glass body, some new accessory and fast charged. reccomended only for people that use more than 128gb.
128gb is more than enough for me and an almost 1000$ 512gb global model is not giustified!

Alessandro999 said:
i prefer the 18 w fast charged since it wont degrade the battery as fast as 30 w fast charger. of course a 6000 mah is more difficult to degrade, but the life span will be better with 18w charger
the tencent edition 8/128 is a best buy.. not worth the global 12/512gb . only it has little more bands, all glass body, some new accessory and fast charged. reccomended only for people that use more than 128gb.
128gb is more than enough for me and an almost 1000$ 512gb global model is not giustified!
Click to expand...
Click to collapse
Proper fast charging shouldn't degrade a battery any faster than normal charging, as long as it doesn't cause the battery to heat up more than normal or charge to a higher finished voltage than normal. What degrades a battery is charging it to 100% all the time, because that last 5 to 10 percent of the charge is up in the 4.15 to 4.2+ volts per cell, which causes the damage that we see as degradation. If you limited the charge to 80%, or even 90% you'd get a MUCH slower degradation of the battery.

bluegizmo83 said:
Proper fast charging shouldn't degrade a battery any faster than normal charging, as long as it doesn't cause the battery to heat up more than normal or charge to a higher finished voltage than normal. What degrades a battery is charging it to 100% all the time, because that last 5 to 10 percent of the charge is up in the 4.15 to 4.2+ volts per cell, which causes the damage that we see as degradation. If you limited the charge to 80%, or even 90% you'd get a MUCH slower degradation of the battery.
Click to expand...
Click to collapse
∆This∆
And what's nice about the phone is that it gives you a way to mitigate this right from settings. Go to Settings, Battery, PowerMaster, Battery Care. Here you can set times for dynamic charging between hours X and Y to get to 100% instead of as fast as you can. Mine is set 10 pm to 7 am for now.

Any 30W third party compatible?

Using the original supplied battery and cable takes around 4 hours or more, any suggestion???
Why it's taking over 4 hours?? Any way to fix?

kanej2006 said:
Using the original supplied battery and cable takes around 4 hours or more, any suggestion???
Why it's taking over 4 hours?? Any way to fix?
Click to expand...
Click to collapse
It takes 4 hours with the phone off or on. If it's on make sure that scheduled charging isn't activated during the period you try to charge the phone.
If non of what I suggested is useful, it's better you take your device to ASUS service center.

Rashad83 said:
It takes 4 hours with the phone off or on. If it's on make sure that scheduled charging isn't activated during the period you try to charge the phone.
If non of what I suggested is useful, it's better you take your device to ASUS service center.
Click to expand...
Click to collapse
From 50% to 100% takes 4 hours with the phone on.
Scheduled charging was already deactivated.
Could you suggest a better alternative cable & charger that may speed up the charge? Thanks.

kanej2006 said:
From 50% to 100% takes 4 hours with the phone on.
Scheduled charging was already deactivated.
Could you suggest a better alternative cable & charger that may speed up the charge? Thanks.
Click to expand...
Click to collapse
There is a problem with your device battery mate either this or your charger is the issue. From 50% to 100% it shouldn't take more than 1 hour and that's with the default charger that comes with the device itself 18W. Try to charge the device with another charger and compare. Otherwise I advice you to taking it to the service center.

Rashad83 said:
There is a problem with your device battery mate either this or your charger is the issue. From 50% to 100% it shouldn't take more than 1 hour and that's with the default charger that comes with the device itself 18W. Try to charge the device with another charger and compare. Otherwise I advice you to taking it to the service center.
Click to expand...
Click to collapse
Thank you for your advice, I will try charging using my Sony Xperia 1 charger & see if it makes any difference.
Otherwise the battery holds charge very well. I will update you shortly as I've only had the device for 3 days...

I will also order this and see if it helps:
JuicEBitz® 25W 3 Port USB FAST QC3.0 Mains Charger Adapter +
It should provide me with the fastest supported charge. I'll order it next week & once tested I will report back.
---------- Post added at 09:21 PM ---------- Previous post was at 08:53 PM ----------
I already have an update and know what the problem is.
Around 30 minutes back, I had 60% battery. Just now I unplugged it and it was 96%
I used original Sony Xperia 1 18w charger and cable. This means that there is an issue with the supplied Asus charger, it is charging very slowly. The 18W Sony charger is charging much faster than the 30W Asus...

Anyway to charge only to 80% in software? With a 6000 mAh battery, I don't really need to charge to full if I can increase longevity of the battery life.