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Averate charging time?

Hello everyone. I have this phone for a week right now and I'm really impressed how brilliant it is! I love it. But there are some questions I want to ask you and one of it is:
What is your average charging time from ~0% to absolutely full 100%? In my case it's about 3 or even 4 hours of constant charging. Even when on 100%, my widget (Battery life by Curve fish) doesn't show it's fully charged - still I have to leave my phone connected and after 30/40 minutes it says "full" and I can disconnect it. It's pretty strange because the charger is meant to have 1,5A output which is VERY BIG current in comparison with Xperia PLAY's charger (850mA). And many reviews of this phone say that the full charging cycle takes about 1h 30min from 0 to 100... What do you think?
Sent from Xperia T using Tapatalk

Are you using it while charging 3-4 hours, if you are using it, it's charged and discharged at the same time?
But from what I know - thermal throttling is the cause again. Especially if you're using it.
Maybe it charges 1,5Ah for the first 15 - 30 minutes, but then the current goes down, because of the temperature.
Somewhere between 80-100% it is normal, that it takes longer. The charging current is as low as high is the battery charging state.

[Q] Charging Query on Stock 5.0.1

I have noticed that when the N6 is on charge, once it reaches 100% and left on charger, the battery starts discharging approx 1% every hour.
I only noticed this when my alarm was going off and when looked at battery usage it was saying 94% but nothing using it - installed GSAM and noticed that once fully charged it starts discharging even while on charge. If I remove charger and re-insert it starts charging again as normal.
Has anyone else noticed this issue. I have contacted Motorola to see what they say, but they are none the wiser and just think it may be a feature of the device/charger but not sure and said to test with another charger.

walkerx said:
I have noticed that when the N6 is on charge, once it reaches 100% and left on charger, the battery starts discharging approx 1% every hour.
I only noticed this when my alarm was going off and when looked at battery usage it was saying 94% but nothing using it - installed GSAM and noticed that once fully charged it starts discharging even while on charge. If I remove charger and re-insert it starts charging again as normal.
Has anyone else noticed this issue. I have contacted Motorola to see what they say, but they are none the wiser and just think it may be a feature of the device/charger but not sure and said to test with another charger.
Click to expand...
Click to collapse
Not sure, I don't use stock or the stock charger. I would have thought the stock charger trickle charged. I remember my HTC desire used to charge to 100%, discharge to 90 and then charge to 100% in a loop as it didn't trickle charge.

Make sure your using a cable that supports data as well. My stock 5.01 and stock charger/cable does trickle charge.

It's perfectly normal to see this in such devices, though if it were going any lower I'd investigate further.
Maintaining a constant flow to the battery would burn it out so the charge gets it to full and then cuts out, allowing a little discharging and cooling of the battery. Once it gets to certain point, it'll start to juice the battery again.
Sent from my Nexus 6

thanks for the replies - I've not seen it drop below 90%, but I know if remove the charger and plug back in, it will start charging as normal - another thing I have recently noticed is that when you do plug charger in, initially it switches between battery/charger a few times and then starts properly charging - I wonder if this is feature of the phone or lollipop causing this. - other than this phone seems to work fine and have had over 2 days on a full charge

Well got it to drop to 80% while plugged in and it didn't start charging again until pulled cable and put back in

what charger are you using? i leave my n6 on a charger for hours after it hits 100%, and it never ever drops. id even say that when it hits 100% it doesnt stop charging. it keeps charging, with a much less inflow of charge than normal, but its still charging. for about 30min before it stops charging. then it just stays at 100%. sometimes i have it plugged in for 8-10 hours after, never once did it go to 99%. this is while using stock, and custom roms.

walkerx said:
I have noticed that when the N6 is on charge, once it reaches 100% and left on charger, the battery starts discharging approx 1% every hour.
I only noticed this when my alarm was going off and when looked at battery usage it was saying 94% but nothing using it - installed GSAM and noticed that once fully charged it starts discharging even while on charge. If I remove charger and re-insert it starts charging again as normal.
Has anyone else noticed this issue. I have contacted Motorola to see what they say, but they are none the wiser and just think it may be a feature of the device/charger but not sure and said to test with another charger.
Click to expand...
Click to collapse
The new gen chargers actually cut the power when the battery Actually hits 99% and show it as 100% and stop it charging. But when the 100% drop to 99% (which is not actually visible), it automatically starts charging. But discharging the battery more than 1% is not actually a Normal thing, I should say. I also do charge over-night, never evidenced such thing. I'll suggest you to try with different turbo charger if you have one.

I'm using the stock charger got with the phone. I did contact Motorola over this and they were useless. I know charger works as charges to 100%. But it then just stops.
I have performed a factory reset to see how it goes tonight.
If still no good will speak with CPW and see what they say as don't fancy having to send off based on some of the forum posts
I have no issues with my N4 which has been connected to a power source for days and still shows 100%
I have also noticed that on the N6 when powered off and charge it doesn't show that it is charging

taken it into CPW and they have sent it off for repair - been told 16 days - at least with apple it's near enough same day, shame can't do same with android phones
I had called Motorola uk support and was promised email confirmation of call and also call back this morning regarding the phone and have had neither
back to my Nexus 4 for time being, just hope my Nexus 6 don't come back with any scratches, etc

I use a Qi charger, and notice this exact thing. Charge until it claims to be full, then stop altogether. So I set it on the pad when I go to bed, and wake up to it not charging and being down to around 95%. I was thinking that it was a characteristic of Qi, but when we got another (identical) Qi pad for the wife's Hammerhead, it "appears" to remain in charging mode indefinitely. Our Qi pads have a blinking white light when they are "charging".

what happens if you just plug the charger directly to the phone so not using the wireless Qi charger, do you get the same fault

doitright said:
I use a Qi charger, and notice this exact thing. Charge until it claims to be full, then stop altogether. So I set it on the pad when I go to bed, and wake up to it not charging and being down to around 95%. I was thinking that it was a characteristic of Qi, but when we got another (identical) Qi pad for the wife's Hammerhead, it "appears" to remain in charging mode indefinitely. Our Qi pads have a blinking white light when they are "charging".
Click to expand...
Click to collapse
Hammerhead does act differently to the shamu. I have both and used them both on the same qi.
Hammerhead trickle charges. Charging icon remains until picked up off charger.
Shamu stops at 100%, charging icon disappears. However, when I remove my Shamu, its always 100% or 99%.. Its never lower.

walkerx said:
what happens if you just plug the charger directly to the phone so not using the wireless Qi charger, do you get the same fault
Click to expand...
Click to collapse
Good question. But judging by the rest of this thread, I suspect that it will behave the same with a wire as with the Qi. I don't ever actually use the wire to charge, since the ballistic maxx case makes access to the USB plug inconvenient.
---------- Post added at 01:58 AM ---------- Previous post was at 01:51 AM ----------
rootSU said:
Hammerhead does act differently to the shamu. I have both and used them both on the same qi.
Hammerhead trickle charges. Charging icon remains until picked up off charger.
Shamu stops at 100%, charging icon disappears. However, when I remove my Shamu, its always 100% or 99%.. Its never lower.
Click to expand...
Click to collapse
I wonder if that could be a coincidence....? I.e., either you aren't leaving it on long enough for the percent to drop lower than that, or leaving it on long enough that it initiates a top-up just before you disconnect it.

Ok, so looking at the DT for the device....
https://android.googlesource.com/ke...ot/dts/apq8084-shamu/apq8084-moto-common.dtsi
Look at lines ranging from 823 to 854 for the smb1357 block.
Note low-voltage-uv = 2750000, max-voltage-uv = 4350000
In mv, that would be 2750 and 4350 respectively. That makes for a range of 1600 mV.
The recharge-thresh-mv = 200
Assuming a *relatively* linear voltage/percentage curve, 200/1600 * 100 = 12.5%. It won't be quite that linear, but this is adequate to give a rough idea of the charge cycle breadth in percentage points.
recharge-thresh-mv accepts values of 50, 100, 200, or 300. The smaller the value is, the tighter the recharge threshold becomes. At 50, we would be looking at roughly 3%.
So my conclusion: working as intended.
There is another aspect that becomes involved when using Qi, which is the bq51021. This one has a parameter "resume-vbatt-mv" set to a value of 4270 mV. That is 80 mV below full, or roughly 5%. Judging by only the name of the parameter, it sounds like it sets a Qi charge cycle breadth of 5%, but I don't understand the relationship between the bq51021 and the smb1357. I suspect that the two have to agree for Qi charging to work.

doitright said:
I wonder if that could be a coincidence....? I.e., either you aren't leaving it on long enough for the percent to drop lower than that, or leaving it on long enough that it initiates a top-up just before you disconnect it.
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Click to collapse
I don't think so. I put it on the charger at pretty much the same time and take it off at pretty much the same time but starting from different % remaining every day... If it did drop to 90%, i would have caught it at least once by now.

update: whatever you do if you are uk customer and purchased via CPW do not take it back to them - i found out today that they are not accredited repairers and they should have advised me it needed to go to Motorola - now trying to find out what is happening with my phone and when to get it back

I'm still trying to understand how my Nexus 6 works with Qi charging, and the results are a bit inconsistent.
I'm using an LG WCD-100 stand and a BlackBerry Blade charger, both of which are reported to work well with the Nexus 6 (in portrait).
I've had my Nexus 6 on the dock on my desk in work this week, and have been keeping an eye on it. I have the screen on all the time (so I can keep an eye on incoming personal emails). Most of the time the N6 charges to 100%. It then stops charging until it get to about 98%, at which time it starts charging again. So far so good. HOWEVER, on a few occasions it did not start to recharge (even with the battery down to the 70's), and I had to remove it from the charger for a few moments and then put it back before it would start charging again.
I'll try again next week (I'm only desk-bound Tue/Wed/Thu) with a different Qi charger, just in case there's a problem with the one I'm using (though I doubt it).
In the meantime, has anybody seen similar behaviour - or is it time to talk to Motorola UK Support?

the charging issue with it not starting again is the same as what i'm having on wired connection - if you install something like gsam battery monitor you can see that it is discharging while actually charging
I also have the LG WCD-100 (from when I had the LG G3) but not actually using it as I think first time tried you have to get it in the correct area for it to charge

I had problems with my Nokia charger. Because this phone is big and the back of the Nokia was less than half way up the back of the phone, the weight of the too of the phone pushed the bottom of the phone away from the charger.. Imagine the phone as a see saw and the top of the back of the charger as the pivot point. Also the unflat back didn't help

Slow Charging 9.7" Tab S2...

Hey guys,
I haven't used my Galaxy Tab S2 in a while now. When I plugged it in it was at 0%. I used "a" (possibly not original that came with box) OEM 2.0A Samsung Charger + Note 5/Samsung Official Cable to charge my tablet. It has only gone up by 5% in the past 30 minutes.
Also when it was at 0% it said it'd take 7hr 12min to fully charge.
Is this normal when the tablet has not been used in a long time, or am I possibly looking at a bad charger/cable as the charger and cable charge my Note 5 just fine at the normal (non-fast charge) speed where it charges my phone fully in just over 1hr 30 min.
If someone could help me out to resolve this I'd be grateful.
Thanks! :laugh:

Don't think the charger and cable are faulty as they work on your mobile. Generally whenever I charge my Samsung galaxy tab s2 using a different charger it shows a notification if the charger plugged in is slow. If it didn't show this I don't see why it would take so long other than the charger your using has a lower output causing it to take a lot longer than usual to charge.

Every android device I have will sometimes not charge fast enough - it doesn't matter what charger I'm using. If I catch that the charge is slow I just unplug it and replug it a it'll be normal again. I think the "smart charge" goes crazy sometimes.

I had the same problem on the tab s2 8''. It was because the motherboard broke. They fixed it under warranty.
When I had this problem I couldn't attach any external device (usb, playstation controller) through USB. Try if you can

I don't have the original charger anymore to compare on my 9.7. I use anker potable batteries to be free of wall sockets. It isn't 2.0. In battery monitor widget, really good app, shows charge anywhere from 1200-1600mA 20% per hour while in use during charging. 5 hours total. I think with screen off I get 30%. I get 10 hours of screen on time zero loss with it off over night. Using 5.1
It could be the motherboard. I know with laptops charging starts to mess up a few weeks before it no longer works at. The connection between the USB and board weakens over time/use.

moustafasadek11 said:
Hey guys,
I haven't used my Galaxy Tab S2 in a while now. When I plugged it in it was at 0%. I used "a" (possibly not original that came with box) OEM 2.0A Samsung Charger + Note 5/Samsung Official Cable to charge my tablet. It has only gone up by 5% in the past 30 minutes.
Also when it was at 0% it said it'd take 7hr 12min to fully charge.
Is this normal when the tablet has not been used in a long time, or am I possibly looking at a bad charger/cable as the charger and cable charge my Note 5 just fine at the normal (non-fast charge) speed where it charges my phone fully in just over 1hr 30 min.
If someone could help me out to resolve this I'd be grateful.
Thanks! :laugh:
Click to expand...
Click to collapse
Sounds normal. The big Lion batteries in these devices are just weird at time. Running one down to 0 is a good way to kill the battery permanently. Let it charge slowly and then keep it above 20-30% from now on. Should improve over time.

I think its a myth you shouldn't let the battery get low. As long as the battery itself says I'm at zero at the correct voltage then zero is perfectly fine. I'm not an expert here but at 5% battery I'm at 3.6v and will turn off in a few minutes after that. I think batteries are manufactured to safely go down to 3.2 before saying no more. Need to charge.

Supercharge slowing down

Is it normal behavior that supercharge "slows down" as it gets closer to full charge?
I am asking because i have noticed that my 1 month old P20 Pro charges slower even though it displays "supercharging" on the display? Maybe i am imagining things, because the battery was at 89% when i plugged it in.
I have used Ampere to monitor the charging current ant it stayed around 750mA during most of the charge and dropped to 450mA at the end.

Damun said:
Is it normal behavior that supercharge "slows down" as it gets closer to full charge?
I am asking because i have noticed that my 1 month old P20 Pro charges slower even though it displays "supercharging" on the display? Maybe i am imagining things, because the battery was at 89% when i plugged it in.
I have used Ampere to monitor the charging current ant it stayed around 750mA during most of the charge and dropped to 450mA at the end.
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Click to collapse
As far as I know, the low battery power of mobile phones is usually due to the fast charging speed. When the charging rate reaches more than 80%, the battery power is close to the full. In order to ensure the safety of use and extend the battery life, when the battery is rapidly charged, the charging current output by the charger will gradually decrease and the charging speed will slow down until it is fully charged. This feeling is normal for you. How long does it take you to charge from 0% to 100%?

Yes - This is generally a safety measure for the battery.
How long does it take from 0% to 50% and as far as I am aware it slows down from 60%

Thanks for your replies bobo and mulkman.
It is reassuring that my device is ok and (hopefully) I am only imagining things
I haven't had the chance to charge from <50% to 100% but I will leave the phone to go below 50% over the next few days and charge it up to 100% and post the result.

Finally my phone discharged enough so i could do some charging.
Started at 44%
Total charge time 66 minutes to 100%.
Supercharge indicated 100% of time.
Meassured approx. every 10 mins (6 time points)

Damun said:
Finally my phone discharged enough so i could do some charging.
Started at 44%
Total charge time 66 minutes to 100%.
Supercharge indicated 100% of time.
Meassured approx. every 10 mins (6 time points)
Click to expand...
Click to collapse
Hi!
Check whether the phone and the power adapter are connected properly. And you should use box accessories (original) charger.

[email protected] said:
Hi!
Check whether the phone and the power adapter are connected properly. And you should use box accessories (original) charger.
Click to expand...
Click to collapse
Connection is as good as it gets and I use the charger and cable supplied in the box with phone.
Is ~40% - 100% in ~1 hour normal charge speed? (Phone is on, screen off)

Damun said:
Connection is as good as it gets and I use the charger and cable supplied in the box with phone.
Is ~40% - 100% in ~1 hour normal charge speed? (Phone is on, screen off)
Click to expand...
Click to collapse
Hi! Was your mobile data on while charging? Because it takes more time when mobile data is on or mobile is heated up.

[email protected] said:
Hi! Was your mobile data on while charging? Because it takes more time when mobile data is on or mobile is heated up.
Click to expand...
Click to collapse
Everything was on, but the phone was on WiFi. Temperature of the battery did increase to 32 degrees centigrade (checked in Ampere). The phone is in a original Huawei smart case, which may increase the temperature.

It's probably about right. It slows down at the top. Attaching a couple of charging sessions for comparison. You can see that the percentage per minute decreases when the battery reaches the higher levels of charge. At the rate of the first picture/occasion it would charge the battery in half an hour. But that's not the case since it slows down a lot.

godlike100 said:
It's probably about right. It slows down at the top. Attaching a couple of charging sessions for comparison. You can see that the percentage per minute decreases when the battery reaches the higher levels of charge. At the rate of the first picture/occasion it would charge the battery in half an hour. But that's not the case since it slows down a lot.
Click to expand...
Click to collapse
Thanks!
It seems that my phone is behaving normally :fingers-crossed:
BTW I did test it with a new charger/cable and got the same results.

Damun said:
Thanks!
It seems that my phone is behaving normally :fingers-crossed:
BTW I did test it with a new charger/cable and got the same results.
Click to expand...
Click to collapse
Good to hear.
Is your phone in one of those TPU case and if so remove it before charging your device.
The charging speed is dependent on the current battery temp so it may throttle if your device gets too hot

mulkman said:
Good to hear.
Is your phone in one of those TPU case and if so remove it before charging your device.
The charging speed is dependent on the current battery temp so it may throttle if your device gets too hot
Click to expand...
Click to collapse
My phone is in an original Huawei flip-case. It is made of PU-like plastic/rubber material and must insulate quite a bit.

Damun said:
My phone is in an original Huawei flip-case. It is made of PU-like plastic/rubber material and must insulate quite a bit.
Click to expand...
Click to collapse
Yes most definitely.
Have you ever noticed that the phone gets warm during the first 0-70% of its charging cycle.
Towards the end the phone enters trickle charge mode to protect the battery

mulkman said:
Yes most definitely.
Have you ever noticed that the phone gets warm during the first 0-70% of its charging cycle.
Towards the end the phone enters trickle charge mode to protect the battery
Click to expand...
Click to collapse
I haven't noticed before. I usually have my phone on the table while charging and i dont pick it up. But when monitoring with Ampere I noticed that the temperature went up.

Wireless charging paused when using wireless android auto

Can't figure this out for the life of me. I can wirelessly charge at any time except for if I'm using wireless android auto. Is this a temperature protection thing or is it a bug?
I have a damaged USB port so I'm stuck wireless for now. Samsung S21 Ultra

I think this has nothing to do with AA, but like you already guessed with a temperature problem. My P30 Pro is also getting really hot when wireless charging + AA and after some time I put it myself out of the charging station of my car and let it cool down, but it never stopped by itself till now

I don't know where you live...but with the hot temperatures we have now in Europe I also have the temperature issue.
I could charge my phone for only 2-3 minutes before reaching more than 40°C. At this temperature the charging current goes down and in fact I lose battery level in stead of gaining battery charge.
Therefore I'm trying now the ESR charger with cooling fan. ESR calls the cooling function Cryoboost.
With this charger I can now charge the phone for 10-15 minutes until it reaches 40°C.
Afterwards I have to let the phone cool down for 3-4 minutes and then I can put it back on the charger.
As I said, I'm currently testing the ESR charger.
So far it is a lot better with an active cooling fan, but not a perfect solution.
In the past days I also had some long trips. During 2 hour trips I charged the phone for 10-15 minutes, took it off and let it cool down and then put it back on the charger. With this strategy I gained in total 10% in 2 hours.
A lot better than before, but not perfect...

Long time experience with wireless AA and long trips (Galaxy S20). This is definitely a temp issue; after few hours of traveling wireless charging stops (with phone getting pretty warm) and battery drains. As this only happens after 5-8 hours of driving (depending outside temp? Use of android?) I put a wire to charge phone in the car and when it happens (only on long rides, more than 5-6 hours continue) I put the phone on the wired charger.
Solution with charger with cooling sounds interesting - I have never heard of it. Can You put link and your experience on the thread please? Thanks!

My experience is: it is a lot better than without cooling.
Nevertheless...as long as it is warm outside you have to cool the phone down in front of an AC ventilator of the car for 3 minutes after 15 minutes of charging. This is the case at around 26-28°C or higher or when the car was outside in the sun for long time. After driving around 20-30 minutes with the AC on, the car cools down enough to leave the phone on the charger for long time.
At temperatures of 33°C and more you really have to cool the phone down every 15 minutes during driving.
If the outside temperatures are high, but there is no sun, you can just leave the phone on the charger without worries.
At temperatures below 25°C it is also no problem to leave the phone on the charger.
Moreover I made tasker scripts:
- when the phone is put on the charger, it will tell me that it is charged and the current battery level
- when the charging is stopped, it will tell me that the charging is stopped and the current battery level
- as soon as I reach a battery temperature of 39.6°C, it will tell me that the phone battery is hot
- as soon as the battery temperature drops below 36°C, it will tell me that the battery temperature is normal
Therefore I have to say, yes it is better than without a cooling fan, but the temperature issue still exists. I could raise the outside temperature until when I can charge without worries.
So far I am happy with the solution as it is possible to gain battery level on long drives.

That's a nice solution (with tasker) - but as the battery status/charging also shows up as an icon on AA I just check the icon regularly during drivingn and when it stops charging put the phone on the wired charger. Works well on the long trips.