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Slow charging

I have decided to move this post from the issues thread to a dedicated one to give it better visibility. If no one else is getting this problem then I will probably return the device.
I have the excellent "devstate" today plugin application installed which gives the battery charge level in 1% steps. When I say slow, it takes around 3 mins to increase by 1% which means it will take 4 hours for 80% charge (too long) when this is the case, the back doesn't heat up.
I have seen it charge much faster on one occasion i.e. around 1% a minute and the back was warming up (this is logical if more current is flowing) I was wondering the cause of the slow charge is that the device thinks it is connected to a pc and the charging current is limited. Also when you plug the cable sometimes the menu pops up asking whether you want to enter activesync/disk drive mode but doesn't on other occasions. There doesn't seem to be any pattern to it.
Another observation is that a soft reeboot occasionaly gives wildly varying battery levels for example before reboot the charge might be 100% and straight after the reboot 90%, or 83% before and 100% after. Interestingly before turning on the device for the first time I fully charged the battery, but up on boot up it was reporting 60%! (maybe it didn't charge at all when it was switched off and 60% was the initial amount of charge the battery came with) Have I got a duff battery or some issue with the device itself?
I seems like the battery charges fast up to 75% at around 1% a minute but then slows down to 1% every 3 to 4 minutes. Maybe this is the charging profile for this battery. Has anyone else noticed this?
Here are a couple of threads from the diamond section regarding the sort of issues I am experiencing but there doesn't seem to be a conclusive fix.
http://forum.xda-developers.com/showthread.php?t=406230&highlight=slow+charging
http://forum.xda-developers.com/showthread.php?t=401945&highlight=charging
Could people please answer the following questions to help me decide whether I have a faulty device/battery or some ROM issue which all of us have. I have the stock UK touch pro ROM 1.90.405.1 WWE.
1) If you fully charged the battery before powering on for the first time, what was you battery charge level immediately after power on?
2) Have you noticed fluctuating charging rates?
3) Soft reboot gives different battery charge levels.

Just a quick Q, which charger are you using? Can you just post the amp / volt data printed onto it for us?

I am using the one that came with the touch pro, model no TC P300, its output rating is 5V at 1A. Input rating 100-240V
I have also tried the mda vario III charger and I get similar results i.e. fast charge up to 75% then slow afterwards.

As i stated in the other tread with the "Raphael issues" i have the same problem.
When i use the shiny new charger with the "usb-mini usb" cable i takes 7-8 hours to completely charge the device. (output is 5V-1A)
However, when i use my good old Hermes charger, or any other 5V-1A charger, it goes to 100% in about 3 hours.

Mine charges up to 90% from 10% in less than 3 hours after which it stays @ 90% (According to the built in battery meter of the device) forever. Is it a faulty battery or its supposed to be like that?

WDawn said:
As i stated in the other tread with the "Raphael issues" i have the same problem.
When i use the shiny new charger with the "usb-mini usb" cable i takes 7-8 hours to completely charge the device. (output is 5V-1A)
However, when i use my good old Hermes charger, or any other 5V-1A charger, it goes to 100% in about 3 hours.
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Click to collapse
And do you get varying battery levels on soft reboot?
3 hours is probably what I would get i.e. "75% at 1% a minute = 75 mins" PLUS "25% at 1% every 4 mins = 100 mins" giving a total of 175 mins.
question is that is this behaviour normal for touch pro or only present on
some device/battery/chargers.
I also have another issue, this time regarding interference on speaker, see this thread:
http://forum.xda-developers.com/showthread.php?t=419761
If only my touch pro has these faults then I want to replace it asap, especially when having paid £500 for it.

billu said:
And do you get varying battery levels on soft reboot?
3 hours is probably what I would get i.e. "75% at 1% a minute = 75 mins" PLUS "25% at 1% every 4 mins = 100 mins" giving a total of 175 mins.
question is that is this behaviour normal for touch pro or only present on
some device/battery/chargers.
I also have another issue, this time regarding interference on speaker, see this thread:
http://forum.xda-developers.com/showthread.php?t=419761
If only my touch pro has these faults then I want to replace it asap, especially when having paid £500 for it.
Click to expand...
Click to collapse
Yes i do get varying levels on reboot, but i got that with my Hermes and Magician too. So i wouldn't worry about it. Usually when you softreset while it's charging you get a higher battery reading then you should have, but it wil drop after some time to it's real level.

WDawn said:
Yes i do get varying levels on reboot, but i got that with my Hermes and Magician too. So i wouldn't worry about it. Usually when you softreset while it's charging you get a higher battery reading then you should have, but it wil drop after some time to it's real level.
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Click to collapse
This happens when its not charging. I don't get this with the vario III. Maybe it is ROM dependant. The other concern was after having charged the device fully when switched off, it reported 60% on power up. I might let the battery drain to a low level then charge when switched off to see whether it charges at all. Some diamond owners were also reporting this.

Hmm, got the same thing tonight with my Hermes charger, has been charging for 6 hours and still not fully charged, now at about 80%. Very strange. Are there more people experiencing this?

billu said:
Another observation is that a soft reeboot occasionaly gives wildly varying battery levels for example before reboot the charge might be 100% and straight after the reboot 90%, or 83% before and 100% after. Interestingly before turning on the device for the first time I fully charged the battery, but up on boot up it was reporting 60%! (maybe it didn't charge at all when it was switched off and 60% was the initial amount of charge the battery came with) Have I got a duff battery or some issue with the device itself?
Click to expand...
Click to collapse
This didn't appear to happen to me on the first charge, but I turned it on immediately after putting the battery and SIM in place, and then I charged (I don't remember what the initial battery charge was). I've not noticed such wildly inaccurate readings after reboot either. I haven't specifically checked for inaccuracy in the battery meter, but I would (probably) have noticed such a big difference.
Have you tried to do a full discharge and charge cycle? This is necessary after around every 30th charge to recalibrate the gauge so that it is as accurate as possible. I know yours probably haven't gone through 30 charges yet, but it may be worth trying.
billu said:
I seems like the battery charges fast up to 75% at around 1% a minute but then slows down to 1% every 3 to 4 minutes. Maybe this is the charging profile for this battery. Has anyone else noticed this?
Click to expand...
Click to collapse
This is normal for lithium-ion batteries. The last 20% or so can take as long as the first 80% to charge.
Sources:
- Lithium-ion battery (Wikipedia)
- Charging lithium-ion batteries (batteryuniversity.com)
- Lithium-ion Batteries (Apple.com)
billu said:
I have the stock UK touch pro ROM 1.90.405.1 WWE.
Click to expand...
Click to collapse
Same as mine.
WDawn said:
Hmm, got the same thing tonight with my Hermes charger, has been charging for 6 hours and still not fully charged, now at about 80%. Very strange. Are there more people experiencing this?
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Click to collapse
When charging I usually leave mine overnight, so I think I've only charged it once during the day, and then I think this was through USB while connected to the PC so it may have been a bit longer than 'normal' (3-4 hours) for that reason. I'll keep an eye at it next time I do it during the day.
Six hours plus sounds far too long though, do you have a chance of trying the battery in another device, or another battery in your device?

Incarniac said:
Six hours plus sounds far too long though, do you have a chance of trying the battery in another device, or another battery in your device?
Click to expand...
Click to collapse
Nope, don't have a second Touch Pro around here, but this is really annoying, I need a fully charged battery in the morning. If this is hardware related i'd return it to get a replacement.

hmm, this is interesting.....so just to clarify we are seeing slower charging with the bundled adapter: which is essentially an AC to USB power transformer?? If the USB port on that (yes i know its power only) is capable of supplying only a standard ammount of juice then your battery may charge to 100% as slowly as from a pc or car charger..
..id like to perhaps see if i can meter the current and voltage coming from it but would need me to cobble together a breadboard with the relevent power points.
Is the hermes / kaiser charger charging it fully in less time?? (to clarify)

Incarniac said:
Have you tried to do a full discharge and charge cycle? This is necessary after around every 30th charge to recalibrate the gauge so that it is as accurate as possible. I know yours probably haven't gone through 30 charges yet, but it may be worth trying.
Click to expand...
Click to collapse
Yes I drained the battery till the phone switched off by itself but still have this problem. I suspect there is a problem either with the phone itself or the battery as supposed to a ROM issue. I thought all the clever charging circuit is in the battery these days and it's the battery which reports it's charge level to the device too. If this is true then probably the battery is faulty but I am not going to buy another one just to find out. I'll try to get a replacement for the touch pro tomorrow when the shops open.

billu said:
I thought all the clever charging circuit is in the battery these days and it's the battery which reports it's charge level to the device too.
Click to expand...
Click to collapse
It is, but even so the gauge (in the battery) needs recalibration once in a while, hence the full discharge/charge cycle every 30th charge or so (other than that it is recommended to charge li-ion batteries often, and not deplete them fully).
Your next port of call is probably to see if another battery makes a difference.
WDawn said:
Nope, don't have a second Touch Pro around here, but this is really annoying, I need a fully charged battery in the morning. If this is hardware related i'd return it to get a replacement.
Click to expand...
Click to collapse
Today I charged my phone from empty to full while connected to the PC, which took around 3 hours 30 minutes (phone not used except to check charge levels towards the end).

the charging cycle on mine has been a little erratic too.
I put it on charge at 9pm last night, at 6.30 this morning it was at 88%. 9 hours and not fully charged!!...still, 3 hours later and it's on 87%. so I think its more a case of requiring a few charge/discharge cycels to settle the guage down a bit.

This night it fully charged in 5 hours. While yesterday it wasn't completely charged in over 8 hours. There doesn't seem to be a pattern in this.

Yesterday it was showing 48% battery level at one time, a soft reset later 28%, another soft reset and it was 24%. Today I have sent it back for a replacement. Can those people affected by this issue please state where they bought it from, in order to figure out whether it might be a faulty batch. I bought mine from clove technology in the UK.

billu said:
Yesterday it was showing 48% battery level at one time, a soft reset later 28%, another soft reset and it was 24%. Today I have sent it back for a replacement. Can those people affected by this issue please state where they bought it from, in order to figure out whether it might be a faulty batch. I bought mine from clove technology in the UK.
Click to expand...
Click to collapse
Mine came from Expansys.be, please let us know your new unit has the same behaviour.

Will do if I get a replacement one, they have satisfy themselves that there is fault first. Will probably take around 3 days. I miss my touch pro already.....
Oh well back to the vario III for the time being, seems cumbersome already in comparison.

Hermes Charger
mrvanx said:
Is the hermes / kaiser charger charging it fully in less time?? (to clarify)
Click to expand...
Click to collapse
Whilst I don't have any exact figures to hand, my hermes charger took about 45 mins (Give or take a little.)
I've been using the standard Raphael charger today and charged from 50% and it's still going after 1 hour 20 mins and only at 90%
I know the final 80% takes a lot longer, but even so.....

Does charging take awhile on yours?

Charging seems to be taking a really long time on mine and was wondering if this is common, or if mine might be defective...
Please let me know what you find, thanks.

I think this is normal as it has a large capacity battery. Mine too takes a while to charge and I remember reading a review where the reviewer also said it took ages to charge.

Itchiee said:
Charging seems to be taking a really long time on mine and was wondering if this is common, or if mine might be defective...
Please let me know what you find, thanks.
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Click to collapse
I have no idea how long it "normally" takes to charge the Note 10.1 but considering the 7000 mAh battery I would say that it will take a while to charge the tablet.
I'm sure that you can calculate this although I do not remember the formula anymore.
Why not try to search on wolfram alfa from the tablet, I'm sure you can find the answer there?

Yeah, I mean I plugged it in around 12:30am with about 20 percent battery and it's now 9:00am and it's showing 80 percent charged. This is estimated since when off it only list charges in 20/40/60/80/100 sections. I'll buy it takes awhile but this is a quite a long while. I also have an Acer A700 that has a 9800mah battery that doesn't seem to take as long to charge. I'm just concerned that I may have a charging issue...
Other then that this is a great tablet!

Itchiee said:
Yeah, I mean I plugged it in around 12:30am with about 20 percent battery and it's now 9:00am and it's showing 80 percent charged. This is estimated since when off it only list charges in 20/40/60/80/100 sections. I'll buy it takes awhile but this is a quite a long while. I also have an Acer A700 that has a 9800mah battery that doesn't seem to take as long to charge. I'm just concerned that I may have a charging issue...
Other then that this is a great tablet!
Click to expand...
Click to collapse
It should take around 7 hours to charge. The Tab 10.1 did.

Itchiee said:
Yeah, I mean I plugged it in around 12:30am with about 20 percent battery and it's now 9:00am and it's showing 80 percent charged. This is estimated since when off it only list charges in 20/40/60/80/100 sections. I'll buy it takes awhile but this is a quite a long while. I also have an Acer A700 that has a 9800mah battery that doesn't seem to take as long to charge. I'm just concerned that I may have a charging issue...
Other then that this is a great tablet!
Click to expand...
Click to collapse
That seems like an inordinately long time. I put mine on the charger at 1:30 last night at 40% and when I woke up this morning at 7:30 it was so full. I guess that's only 60% and I suppose it might have just finished charging right when I woke up.....

Last night mine charged from 30% to 100% in about 4 hours.
Sent from my GT-N8013 using xda premium

Better to charge slowly and have a longer life from the battery, unlike some devices that shove loads of current into the battery in a short time.

Yes - the charge takes awhile, but then the battery life on this model seems to be doing very well.

Is the charger to the Note 10.1 a 1A charger (same current as the one to the Note phone)?
Edit: Never mind, I found the answer here.

Mine went from zero to 50% in two hours with the Note off. Turned it on with wifi on and screen off, charged from 50% to full in another 2.5 hours.

It's normal better use some batter saver apps
sent from my htc

In case anyone cares my replacement (switched from 16gb to 32gb) charges at a reasonable speed.
Even with my 10ft aftermarket cable! The stock one is way too short and will be used for data link on the PC.
Case closed!

Weird battery characteristic for Nexus 5

Hi there,
Anyone experience that after overnight charging, the battery will drop to 99% instantly just after unplug from charging brick?
I also notice that after its fully charged, turn off the phone and let it charged for another 30 mins or so, once turn it ON and the 100% will stay for 5-10 mins before the 1st drop.
Send from Nexus 5 - best of the best Android device in the world.

Never happened.

ZhenMing said:
Hi there,
Anyone experience that after overnight charging, the battery will drop to 99% instantly just after unplug from charging brick?
I also notice that after its fully charged, turn off the phone and let it charged for another 30 mins or so, once turn it ON and the 100% will stay for 5-10 mins before the 1st drop.
Send from Nexus 5 - best of the best Android device in the world.
Click to expand...
Click to collapse
that instant drop is to protect the battery...
its normal...
and for longer battery life dont charge it upto 100%...
charge it somewhere around 85 and use it upto 20%...
85-20 is the best charging ratio..

jaj473 said:
that instant drop is to protect the battery...
its normal...
and for longer battery life dont charge it upto 100%...
charge it somewhere around 85 and use it upto 20%...
85-20 is the best charging ratio..
Click to expand...
Click to collapse
What? It's not normal. Charging to 100% is fine. It shouldn't instantly drop down.

jd1639 said:
What? It's not normal. Charging to 100% is fine. It shouldn't instantly drop down.
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Click to collapse
Due to it being a lithium polymer battery it is best to only actually charge it to around 85%, as when it hits 100% a part of the battery does actually die.. The same idea goes with running it to 20%, that's as low as you should run it, its not like the old batteries where you have to run it in, that's actually bad for the new batteries that operate most of today's devices.. But with that being said, the amount of the battery that dies with charging it to 100% or letting it run to 5% is so miniscule that you'd only notice a difference after around 600 cycles, so around 2 years.. Even then it would be close to a battery ran to perfection.. The difference between 2 would only be around 10%

jaj473 said:
Due to it being a lithium polymer battery it is best to only actually charge it to around 85%, as when it hits 100% a part of the battery does actually die.. The same idea goes with running it to 20%, that's as low as you should run it, its not like the old batteries where you have to run it in, that's actually bad for the new batteries that operate most of today's devices.. But with that being said, the amount of the battery that dies with charging it to 100% or letting it run to 5% is so miniscule that you'd only notice a difference after around 600 cycles, so around 2 years.. Even then it would be close to a battery ran to perfection.. The difference between 2 would only be around 10%
Click to expand...
Click to collapse
You sound like you know what you are talking about so I believe you.
But, the big question is: Who uses their phone for two years!?
Sent from my Nexus 5

El Daddy said:
You sound like you know what you are talking about so I believe you.
But, the big question is: Who uses their phone for two years!?
Sent from my Nexus 5
Click to expand...
Click to collapse
:silly::silly:
just saying...

Hot after overnight charge (not wireless)

HI everyone, for the second day I noticed that after I left my N5 to charge overnight it was fairly hot after I took it off the charger. I have been leaving it to charge overnight for months and normally its not even warm since it trickle chargers after hitting 100%. My Nexus was charging right next to it and it was cool when I took that off the charger. It did fully charge and I checked if the phone was maybe not sleeping the entire night but that wasn't the case either. I checked with Current Widget and it was showing that even at 100% it was still taking around 200 mAh power. Usually it shows very minimal charge at 100%. Has this happened to anyone? I know I've read this happening with wireless chargers where it the phone wouldn't even charge, but in this case the phone was charged and it was just using the stock charger.
It also seems like I'm getting the Android OS bug after taking it off the charger. I suppose this might the cause of the entire thing. I'm just worried that it happened two days in a row.

The phone continues charging passed 100%. First it will still show 450mA eventually dropping to 200mA or so as you saw. Eventually true 100% is reached and the battery starts draining 0-10mA while the AC provides the rest.
Sent from my Nexus 5 using Tapatalk

bblzd said:
The phone continues charging passed 100%. First it will still show 450mA eventually dropping to 200mA or so as you saw. Eventually true 100% is reached and the battery starts draining 0-10mA while the AC provides the rest.
Sent from my Nexus 5 using Tapatalk
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Click to collapse
Thanks, that's what should happen. But it seemed the past two nights it never dropped to 0-10 mah. Which is why I think it was hot in the morning. I just charged it from about 70% to 100% and it did trickle charge this time, so hopefully the issue is solved now. Has this happened to anyone though?

New Xperia Z5 doesn't fully charge to 100%

I got a new Z5 yesterday and since then I've been playing around with it and I'm happy so far. Only issue is the battery level doesn't fully charge to 100 after an extended period of charging. Mostly it gets stuck at 97 or 98. I managed to make it reach 100 by turning it off and charging it while it was powered off. Is this normal? I've read that it's some sort of protection from overcharging. Really strange way to do it, though.

I charge mine overnight and it's always been on 100 in the morning

Are you using the supplied charger ?
Mine seems to take an age to go from 97% upwards... upto that point its as you expect, but like above i charge mine overnight and its always 100% in the morning...

wakers said:
Are you using the supplied charger ?
Mine seems to take an age to go from 97% upwards... upto that point its as you expect, but like above i charge mine overnight and its always 100% in the morning...
Click to expand...
Click to collapse
yeah I am. guess this is what I need to do. I was waiting for it to climb to 100 so that might have made the time seem longer

I think from my limited experience it does seem to take longer to charge that last 5%, last night it ran out after about 10min it was up to 12% this morning because it ran out last night i charged it up before i came to work and seemed to take an age to go from 97% to 100% talking 15min plus... edit just to add i didn't use the sony charger this morning i used a charging station we have in the kitchen so that might have something to do with it also...

wakers said:
I think from my limited experience it does seem to take longer to charge that last 5%, last night it ran out after about 10min it was up to 12% this morning because it ran out last night i charged it up before i came to work and seemed to take an age to go from 97% to 100% talking 15min plus... edit just to add i didn't use the sony charger this morning i used a charging station we have in the kitchen so that might have something to do with it also...
Click to expand...
Click to collapse
Yeah you are right the last 3-5% are long to charge
Tip. Never go down 15-20% it is better to keep your battery life
Sent from my E6653 using XDA Free mobile app