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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.
Click to expand...
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?
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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?
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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.
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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.
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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)
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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.....
Guys,
Was just wondering. how long is the battery taking to charge.. from the DHD, Iphone4, HD2.. they would pop to 100 within a couple of hours or so.. (NORMAL!!!)
This sensation... from 31% to 83% in 2.5 hours.. this is longer than i thought...
Mine took a whole 3 hours to go from 9% to 100%
prateekgujral said:
Guys,
Was just wondering. how long is the battery taking to charge.. from the DHD, Iphone4, HD2.. they would pop to 100 within a couple of hours or so.. (NORMAL!!!)
This sensation... from 31% to 83% in 2.5 hours.. this is longer than i thought...
Click to expand...
Click to collapse
I had similar problem yesterday. It sticked with %89 then I unpluged the charger and rebooted the phone. This time it says %100. Looks like there is a problem with calculation of percentage.
Yeah...mine takes a really long time to charge. I know lithium ion batteries charge slowly after it reaches 80%, but it still seems a lot slower than my previous phone.
yeah.. i rebooted and it was up to 99%.. strange. although it drained very quickly back to 87%... since been 3 hours and its not down to 77%.. so i think it is settling.. maybe an update
Desparately awaiting the root so all these irritating bugs can be addressed
mine took 4 hours yesterday....
Same puy my phone on charging in the afternoon at 10% and 3 hours later it was 75% which is not bad but still slower then usual
I plugged mine into a wall charger at 10 pm last night. At 6 am it was still showing charging and not full. Has to be a software bug. No way it can charge for 8+ hours and not be fully charged.
dubie76 said:
I plugged mine into a wall charger at 10 pm last night. At 6 am it was still showing charging and not full. Has to be a software bug. No way it can charge for 8+ hours and not be fully charged.
Click to expand...
Click to collapse
i agree... i hope this gets fixed...
well, I have started using a new different wire to charge which is not from samsung brand. And it is working very well like the original one.
Did you try to delete battery stats from recovery?
Sent from my HTC Sensation using XDA Free mobile app
Normal
Inf1n1te said:
Did you try to delete battery stats from recovery?
Sent from my HTC Sensation using XDA Free mobile app
Click to expand...
Click to collapse
Normally 3 hour -4 tried to use another charger or cable
Sometimes it takes longer if you charge it with USB on some PCs USB ports.
I just got my Asus Transformer, I charged it full out of the box for 8 hours as initial charge. Should i drain it to 0 % and charge it for second time? or Just wait until 10 %?
Doesn't matter. I usually charge it when it gets to 10%.
For the first times I waited till 10% or something to fully recharge.
But after a lot of reading about the matter, I have found lots of opinions, so I think it doesn't make a big difference.
Regards.
Alright. Thanks man. Will just charge when 10%
From asus manual:
"Remember to fully charge the battery (8 hours or more) before first use and whenever it is depleted to prolong battery life. The battery reaches its maximum capacity after a few full charging and discharging cycles."
After awhile, Lithium-Ion Batteries don't really care how you charge them, or what their capacity is. Charging a battery at say 50% vs 10% won't really add that much more juice. I wouldn't really concern yourself OP..
Guys, the first 8hour charging means that I must charge separatly 8hours tablet and next 8hours dock? Because I put dock and tablet together and charge it 8hours. Was it wrong? Then I was using it connected tablet+dock together until it was showned warning that battery dropped under 5% and orange LED on the side of dock was blicking. Then I charged it again together and after 5hour of charging, LED is green and tablet shows 100%. Is it OK? Did I do something wrong?
Thanks
One question to you guys: During the first 8 hour charge, were you able to turn on the tablet? Because mine is sitting since 2 hours now and it won't turn on.
I have managed to turn it on.It required to keep the On button for about 10 seconds.
drifterD1 said:
Guys, the first 8hour charging means that I must charge separatly 8hours tablet and next 8hours dock? Because I put dock and tablet together and charge it 8hours. Was it wrong? Then I was using it connected tablet+dock together until it was showned warning that battery dropped under 5% and orange LED on the side of dock was blicking. Then I charged it again together and after 5hour of charging, LED is green and tablet shows 100%. Is it OK? Did I do something wrong?
Thanks
Click to expand...
Click to collapse
You're fine. The goal is to get the batteries fully charged rather than, say, up to 50% and then stop.
Last I read, LiPo batteries do not need deep cycling to maximize battery life or restore lost capacity due to battery "memory." Some recommend an initial full charge followed by full depletion, but go on to note that is largely to calibrate battery usage stats. I keep most of my LiPo devices plugged in when I'm not using them, because those batteries require "smart" chargers that stop charging when the batteries are full.
If someone has good info to the contrary, I'd love to hear it. But, with well-made devices and chargers, there is no need to follow any sort of careful battery charging regimen. Use it when you need it, and charge it when it needs a charge.
AcerMate said:
One question to you guys: During the first 8 hour charge, were you able to turn on the tablet? Because mine is sitting since 2 hours now and it won't turn on.
Click to expand...
Click to collapse
Mine was partially charged and turned on out of the box. Perhaps you have a power button with a loose connection? As long as it's working now, I would not worry about it.
finally today I recive my TR from US,& question is
are all of you guys ,charged 8 hours your TF
coz my is after 3 hours of charging TF is full 100%
& stay like that almost 2 hours more...
should I wait more 2 hours(for calibration reason)
or I can use it now
In the manual, it says charge for 8 hours before first use. I doubt that using before 8 hours is up will damage anything, but why risk it? I'd leave it on the charger.
10ks m8
Thanks for reply. My TF last 15hours of work after second charging. I think everything is OK with battery.
Underwater Mike said:
In the manual, it says charge for 8 hours before first use. I doubt that using before 8 hours is up will damage anything, but why risk it? I'd leave it on the charger.
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Click to collapse
8hrs??? Are you sure that the asus manual? Sound like its the Samsung 10.1 manual... That how.long it takes to fully charge the 10.1
dazz87 said:
8hrs??? Are you sure that the asus manual? Sound like its the Samsung 10.1 manual... That how.long it takes to fully charge the 10.1
Click to expand...
Click to collapse
Right in the little pamphlet (that counts as a manual ) under the TF in the box. I'm sure, because it's one of the few times I've read a manual in the last decade.
I´m charging my new TF for the first time and it´s reached 100% after 3 hours. Is it ok to start using it now or must i wait 5 more hours for the 8 that´s stated in the asus-booklet?
You could use it while its charging. First charge is really important. Dont stop the charge
Sent from my U20i using XDA Premium App
bitmovel said:
You could use it while its charging. First charge is really important. Dont stop the charge
Sent from my U20i using XDA Premium App
Click to expand...
Click to collapse
^^ Be patient and let it charge.
just wondering how long other peoples phones are taking to charge? mine seems to be taking unusually long im at about 2.5 to 3 hours and still at 87%?
It should take some hours to charge. Mine never seems to go over 500mA/Hr charge rate. So, if you have a 1500mA/Hr battery, the FASTEST possible would be 3 hours. (1500mA/500mA)
Now, the charge circuit will not charge at the max the whole time, so it should take longer than 3 hours. This assumes your max charge current is less than 500mA.
Matt
this was weird, it was first time fully charging phone...i restarted it and now it says 100%???
mattdub1 said:
this was weird, it was first time fully charging phone...i restarted it and now it says 100%???
Click to expand...
Click to collapse
Not sure what you mean exactly...What is weird, exactly? What was the initial charge, the final charge, and the time taken?
Matt
It takes me eight hours to get to 4.2 volts
khakiman said:
It takes me eight hours to get to 4.2 volts
Click to expand...
Click to collapse
What is your battery capacity?
Matt
it was stuck in the 80% range for several hours so i thought i would try rebooting the phone... upon reboot, it was magically at 100% even though it said 87% before i shut the phone down and pulled out the charger cable... I have been reading another thread in the Q & A about other people having this issue especially when the phone is new... could have something to do with the battery calibration since it has only gone through one charge cycle so far so maybe it was confused about what "100%" voltages were... http://forum.xda-developers.com/showthread.php?t=1201474&highlight=battery is the thread where my exact problems are described
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.
Click to expand...
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!