Develop Bugs

Battery issues

Ok, this is just plain frustrating and I have no clue about what to do.
The lifetime on my phone is dropping ridiculously fast. I replaced the original batery (that used to get ran down pretty quickly, about half a day, without using the phone much) with a spare battery a friend gave me (it's from a different model, but a minor modification it fit perfectly. For a while, it worked somewhat more decently (although should I have used the phone, I'd lose about 1% for every 30-45 seconds of usage). But for a couple of days, it started wearing down a lot quicker as well.
For instance, just charging the phone and then leaving it without actually touching it on the desk will leave it at 88% battery life within about 30 minutes.
I've checked the processes to see if there's anything out of the ordinary, but everything seems fine. I'm thinking maybe the battery may have gotten damaged in the meantime since it wasn't the designated model for this phone, but I'm having serious doubts.
Also, I've ordered a new battery which should ship any day now. Hopefully it will solve the issue, although I'm considering getting a new phone.
Any ideas?
Also, the old Asus that I used to have (WM 6.0, standard keyboard) still has an amazing battery life, at least compared to the HTC (it can do about 3-4 days in standby, and 2 days with normal usage. Also, it's able to run for 12 hours while playing music and occasional web browsing. I can barely squeeze two hours of usage from my HTC)

mtranda said:
Ok, this is just plain frustrating and I have no clue about what to do.
The lifetime on my phone is dropping ridiculously fast. I replaced the original batery (that used to get ran down pretty quickly, about half a day, without using the phone much) with a spare battery a friend gave me (it's from a different model, but a minor modification it fit perfectly. For a while, it worked somewhat more decently (although should I have used the phone, I'd lose about 1% for every 30-45 seconds of usage). But for a couple of days, it started wearing down a lot quicker as well.
For instance, just charging the phone and then leaving it without actually touching it on the desk will leave it at 88% battery life within about 30 minutes.
I've checked the processes to see if there's anything out of the ordinary, but everything seems fine. I'm thinking maybe the battery may have gotten damaged in the meantime since it wasn't the designated model for this phone, but I'm having serious doubts.
Also, I've ordered a new battery which should ship any day now. Hopefully it will solve the issue, although I'm considering getting a new phone.
Any ideas?
Also, the old Asus that I used to have (WM 6.0, standard keyboard) still has an amazing battery life, at least compared to the HTC (it can do about 3-4 days in standby, and 2 days with normal usage. Also, it's able to run for 12 hours while playing music and occasional web browsing. I can barely squeeze two hours of usage from my HTC)
Click to expand...
Click to collapse
Maybe you should get a new and proper battery to your device, maybe your fix does not work anymore. Also you can damage the excalibur motherboard if your messing with different volts from batteries design for other phones.

Well, the battery voltage is the same. So is the pin layout (well, that was pretty self implied). Both batteries are manufactured for HTC phones.
I guess I'll find out when my new battery arrives. However, my phone has been acting weirder and weirder. SD card issues, now the battery... And on top of that, I wonder if the two issues are related.
Edit: also, will the charger output make much of a difference? Say I use a 500 mA charger or a 1000 mA one.

Issue solved. Apparently it was from the SDHC patch I had installed a few days before. Removing the patch did not solve the issue (also, the patch disabled my WIFI) so I proceeded to reinstall WM on my phone. Now it runs fine, with regular battery drain.
I think the patch may have not allowed the CPU to enter idle mode. I can't think of any other explanation.

nah its definitely ur battery. i had the same problem, its that ur battert has degraded and it has become unable to withstand its charge. just call ur phone carrier and tell them. the should send u a free battery.
Source
-experience lol

mtranda said:
Well, the battery voltage is the same. So is the pin layout (well, that was pretty self implied). Both batteries are manufactured for HTC phones.
I guess I'll find out when my new battery arrives. However, my phone has been acting weirder and weirder. SD card issues, now the battery... And on top of that, I wonder if the two issues are related.
Edit: also, will the charger output make much of a difference? Say I use a 500 mA charger or a 1000 mA one.
Click to expand...
Click to collapse
I know some HTC batteries are the same voltage, but why do you think they make different ones especifically for every model eventhough they have the same voltage.
Just to let you know and regarding the output charger; I did a little experiment once, with motorola chargers (V3) since you can charge your dash with them but I tried to charge the exact phone (motorola) with the original HTC output charger.....and it didn't charge at all.
After months of using the motorola charger I started to realize my battery was not working well in my excalibur and in a period of 4 months my battery didn't hold a charge for more than 3 hours. I bought a new one and I strictly used the orginal HTC charger.
My battery is 9 months old now and works like charm (2 days + hours) with the latest ookba 3vo rom.

My battery life

Hi, I am noticing that my battery life is very short. I have to charge my phone atleast twice a day. Last night I watched a program on my phone which was forty minutes long. After that my battery was already 60 percent about. However.now, in the morning, I woke up and checked one thing on the internet by 3g and now my battery is already 40 percent. Why is this .... I know that battery life on here is not good but mine seems worse.
Is anyone getting the same?
Thanks in advance.

Tell us your settings:
- Do you allow background data?
- Do you always synchronize?
- Do you enable data connection?
- Do you connected to the Wi-Fi all the time?

I swear my battery life is far far better since i put that Generic rom on, maybe the minor updates htc have released help battery life ?

Maybe the update will fix the battery life issue? We'll see when it rolls out on t-mobile handsets.
Other people have reported excellent battery life (mine only arrived today) and it seems to improve over time. How long have you had it?

I had mine 1 week today was originally on the T-Mobile rom and have had terrible battery life up to even yesterday, updated to the Generic Rom yesterday and it honestly seems to last longer now.

Jabbypants said:
I had mine 1 week today was originally on the T-Mobile rom and have had terrible battery life up to even yesterday, updated to the Generic Rom yesterday and it honestly seems to last longer now.
Click to expand...
Click to collapse
I was waiting for someone to report this before I did .. I too was originally on the T-mobile ROM and updated to the Generic ROM. I didn't notice any increase in battery life. In fact I didn't notice any changes apart from the minor T-mobile branding having gone.
Yesterday I did the OTA update and again didn't notice any changes. I did this morning though, in 10 hours the battery only dropped 4%. Of course the phone hadn't been used in that time and I have wi-fi and bluetooth switched off but I am sure this is a lot better than I was getting.
Maybe the OTA update has improved battery life. Let's hope so.

Hello again,
Is the generic Rom the Rom without the T-Mobile stuff?
How would you get that? And would that remove your warrenty / insurance?
How have some T-mobile people get the OTA update whereas some have not?
Have you realy found a difference with it?
THank you

Raminder1992 said:
Hello again,
Is the generic Rom the Rom without the T-Mobile stuff?
How would you get that? And would that remove your warrenty / insurance?
How have some T-mobile people get the OTA update whereas some have not?
Have you realy found a difference with it?
THank you
Click to expand...
Click to collapse
Yes to without T-Mobile stuff.
You can download it in the Android Dev Desire section on here. There are extra steps to take.
It WILL void your warranty.
Anyone that got their phone direct from T-Mob will NOT have it unless they did it manually. And by that i mean manually flash generic rom then update.
I noticed my battery is better but it's only one day. And i never really had a problem with it. I charge once a day anyways.

Thank you for the help.
However I am unsure if I should get the generic ROM.
What are the other advantages?
Because there is not a lot of T-Mobile stuff on there.
If I got mobile insurance with T-Mobile and flashed the ROM would I be able to claim if my phone got damaged or lost?

Raminder1992 said:
Thank you for the help.
However I am unsure if I should get the generic ROM.
What are the other advantages?
Because there is not a lot of T-Mobile stuff on there.
If I got mobile insurance with T-Mobile and flashed the ROM would I be able to claim if my phone got damaged or lost?
Click to expand...
Click to collapse
Advantages. The phone is as it would come straight from the manufacturer. You will always receive updates for the device before Vodafone, O2,T-Mob etc would have them ready.
If the phone was lost then yes. If damaged...probably not but if it develops a fault you can always drop it in a drink and claim on he insurance...bit dodgy like!

My battery life story
So, I downloaded the brut Google nav mod the other day and haven't had a chance to use it until today. Took a journey which took about one hour, and made sure that my battery was fully charged before I went. I still hooked up the phone to the car charger though, to save power. One thing I noticed about charging the desire, however, is that if it identifies the battery as being already full when you connect a charger, the indicator light stays green, so doesn't top up even when you have been using it for a while. I noticed this about 20 minutes into my journey by which time the battery must have gone down quite a bit. Removing then replacing the charger sorted the problem and the Orange light indicated that it was charging again. By the time I got to my destination the battery was at about 50%.
On the return journey, I hooked up the phone again, turned on Google nav and set off. About 30 minutes into the journey I stopped off at a petrol station to grab some snacks, checked the battery and read 17%! Even though it was supposed to be charging the whole time!! I then got a message saying that the power from the car wasn't enough to charge the phone and I should attach AC power ASAP, which I obviously couldn't as I was in the car. I ignored it, got home safely enough, disconnected the charger and then watched the phone die .
Ok, so I was using gps and 3G which clearly uses up power and I guess Google nav is fairly processor hungry, but I would assume that having it connected to the car charger would be enough. Coming from a tocco ultra, I'm used to rubbish batteries, but at least that would charge up in a car.
Don't get me wrong, I still love the phone, but I just need to know if this is gonna be a regular issue, or something that can be sorted out with a Rom update.
Just for info, I've had my desire for nearly a week now on TMO using the old Rom. And, the car was Passat estate which is in very good nick, so I doubt that was the problem.

adjei7 said:
So, I downloaded the brut Google nav mod the other day and haven't had a chance to use it until today. Took a journey which took about one hour, and made sure that my battery was fully charged before I went. I still hooked up the phone to the car charger though, to save power. One thing I noticed about charging the desire, however, is that if it identifies the battery as being already full when you connect a charger, the indicator light stays green, so doesn't top up even when you have been using it for a while. I noticed this about 20 minutes into my journey by which time the battery must have gone down quite a bit. Removing then replacing the charger sorted the problem and the Orange light indicated that it was charging again. By the time I got to my destination the battery was at about 50%.
On the return journey, I hooked up the phone again, turned on Google nav and set off. About 30 minutes into the journey I stopped off at a petrol station to grab some snacks, checked the battery and read 17%! Even though it was supposed to be charging the whole time!! I then got a message saying that the power from the car wasn't enough to charge the phone and I should attach AC power ASAP, which I obviously couldn't as I was in the car. I ignored it, got home safely enough, disconnected the charger and then watched the phone die .
Ok, so I was using gps and 3G which clearly uses up power and I guess Google nav is fairly processor hungry, but I would assume that having it connected to the car charger would be enough. Coming from a tocco ultra, I'm used to rubbish batteries, but at least that would charge up in a car.
Don't get me wrong, I still love the phone, but I just need to know if this is gonna be a regular issue, or something that can be sorted out with a Rom update.
Just for info, I've had my desire for nearly a week now on TMO using the old Rom. And, the car was Passat estate which is in very good nick, so I doubt that was the problem.
Click to expand...
Click to collapse
I would look if the charger really charges the phone or if it drains it also when not using GPS/Nav etc.
Reason I'm saying this is that I once bought a charger that actually drained the battery instead of charging it, while it worked fine on my older Nokia phone. I'm assuming the phone deactivates some power saving features because it thinks it's hooked up to a charger, but at the same time the charger is too weak to actually charge it.

I have not used branded rom before on this phone but the htc rom battery life is fine. Mine has been going for three days with usage fine

A|ex said:
I have not used branded rom before on this phone but the htc rom battery life is fine. Mine has been going for three days with usage fine
Click to expand...
Click to collapse
nice, 3 days. how many times u charged the phone since u got it?

Try out Locale app... will definitely help saving battery power: twofortyfouram.com

intresting my battery last a day

I just started charging 2nd time my battery and it lasted hmm since about 2pm till 15% at about 00.00 which is pretty much 10hours of heavy use. i did leave it on sleep for about 2 hours though and i left it at 25% and after that it had 25-24 % lol so if you turn all the updates off it will last quite a lot i guess

I rang up T-Mobile today (tech support) to ask about the lack of update considering the rom was behind the non carrier phones at the start and then an update too. They said they do work on them when they see a notable difference worth updating.
Anyway, I also said I was incredibly dissatisfied with the battery and how long it lasted and wondered if it could be to do with the ROM being well behind the stock HTC one. The tech support guy was excellent and very helpful. He said that with the type of battery in the Desire, you need to make sure you have it on a MAINS charger from quite low for a good couple of 14 hour sessions with the phone off. This builds up the charge for the battery and you should see a marked improvement. He said that most people don't bother to do that and as a result get poor performance.
He did say him and 4 members of his team have the same phone and while some of his team had battery issues he didn't. The main reason being that he had spent a few days not taking it to work and running it down in the evening then giving it three 14 hour chargers. He said that made a huge difference.
He also said if I was dissatified to a point of big frustration they would replace the phone or refund. Can't ask fairer than that

Bandare said:
I rang up T-Mobile today (tech support) to ask about the lack of update considering the rom was behind the non carrier phones at the start and then an update too. They said they do work on them when they see a notable difference worth updating.
Anyway, I also said I was incredibly dissatisfied with the battery and how long it lasted and wondered if it could be to do with the ROM being well behind the stock HTC one. The tech support guy was excellent and very helpful. He said that with the type of battery in the Desire, you need to make sure you have it on a MAINS charger from quite low for a good couple of 14 hour sessions with the phone off. This builds up the charge for the battery and you should see a marked improvement. He said that most people don't bother to do that and as a result get poor performance.
He did say him and 4 members of his team have the same phone and while some of his team had battery issues he didn't. The main reason being that he had spent a few days not taking it to work and running it down in the evening then giving it three 14 hour chargers. He said that made a huge difference.
He also said if I was dissatified to a point of big frustration they would replace the phone or refund. Can't ask fairer than that
Click to expand...
Click to collapse
It is good to know there are some good staff out there
I shall try what he says as I have bad battery life!
I am just putting every application on to drain my battery first lol
Thank you for the tip

Raminder1992 said:
It is good to know there are some good staff out there
I shall try what he says as I have bad battery life!
I am just putting every application on to drain my battery first lol
Thank you for the tip
Click to expand...
Click to collapse
yeah, I turned mine off a few hours a go and will leave it off until tomorrow.

[Q] Battery suddenly terrible?

When the battery life of a phone like this goes bad is it a sudden thing? Or does it gradually hold less charge?
I've been using this phone for the best part of 16months with excellent battery life lasting a week with little use. Now all of a sudden it dies EVERY day when I've charged it the night before.
It doesn't even make it through a day at work if I don't even use it at all. No texting, phoning email or anything and it still dies fast.
It can be sat in my pocket all day and then I come to look at it at 6pm and it's off because the battery ran out again
This normal when the batteries start getting a bit old? I thought it would be more gradual, literally 3 days ago it went like this over night.
Anyone else have this problem?

check power settings to see if your auto backlight/power off settings haven't magically been disabled.

Had the exact same problem. Have followed all suggestions available-
making sure wif-fi/bluetooth off
Applications off
internet optimised
battery left to drain, phone reset and new battery fully charged before turnign back on
and several other procedures. 3 new batterys tried including 1 200o battery.
No luck with anything. i get about 6 hours if i dont keep toppoing up. Have to carry a spare battery everywhere.
Has anyone any solutions!!!!????????????

If you are having the issue even with a brand new battery I'm going to guess something's gone wrong with your device.

epoh said:
If you are having the issue even with a brand new battery I'm going to guess something's gone wrong with your device.
Click to expand...
Click to collapse
Not necessarily.
2OP - did you do a hard reset ? If not, do that, do not load any applications, do not change any settings other than the ActiveSync "fake server" trick (which assume you did already), and see if you still have a problem.

DJ_Enigma said:
When the battery life of a phone like this goes bad is it a sudden thing? Or does it gradually hold less charge?
I've been using this phone for the best part of 16months with excellent battery life lasting a week with little use. Now all of a sudden it dies EVERY day when I've charged it the night before.
It doesn't even make it through a day at work if I don't even use it at all. No texting, phoning email or anything and it still dies fast.
It can be sat in my pocket all day and then I come to look at it at 6pm and it's off because the battery ran out again
This normal when the batteries start getting a bit old? I thought it would be more gradual, literally 3 days ago it went like this over night.
Anyone else have this problem?
Click to expand...
Click to collapse
For 16months, i think you made the best of your battery life, i think it would be best to replace it as after 400 charge cycles, the battery deteriorates

One other thing I've noticed is that when the battery does run out, the clock has to be re-setup every time. I never had to do this when my phone ran out before. I'm wondering if this is indicative of a probelm other than just a shabby battery.
Thanks,
G

My tilt 2 had the USB problem (where it (seemingly) charges fine, but it cannot sync).
I noticed that the battery that could go for 2 days with very light use, would not go through more than 1/2 a day even when I don't even touch the phone.
I woud try to plug the phone into a computer via a USB cable and see if the computer recognizes the device.
My phone was under warranty, so when the replacement came, I put in the "dead" battery (according to my defective tilt2), and it listed 70% on the replacement phone.
Anyway, it does sound like you are having the same problem, because you have tried new batteries. So if you try syncing with USB and see if you have the same problem.

All, I seem to be having the same issue with a Sprint TP2. I had the first one replaced thinking it was the device. The replacement arrived and had the same issue. I took it into one of there stores and had the battery replaced. No dice. The battery drains 10% of it's power every 20 minutes, that is with nothing running and me not messing with it. I tried different ROM's thinking that would help. I installed NRG Dinik, GrooveROM, NEO_cht 2018, and Ana CHT. The issue still remains. Yesterday I came across a thread suggesting that I drain the battery completely, the recharge for 5 minutes, powering on and then clearing the storage(Hard reset while the phone is on). Phone charge seemed a little stable in the morning for the first hour, then returned to it's annoying 10% drain every 20 minutes. Any other suggestions?

Left out this folowing information, thought it might be relevant. Also had my charger replaced. Another thing I noticed with this behavior is that the contacts duplicate themselves every so often...

Go to Settings > Sound & Display. Check that the following are turned off:
Quiet ring on pickup
Pocket Mode
I played around with these for awhile and found that either of them, when turned on, will kill the battery in just a few hours.
Also, if you have a Hotmail account set up on it, make sure that it is not set to synchronize "as items arrive." Although you can get away with this setting for Exchange, Hotmail will kill the battery as fast as the above two settings.

3G Search Causes Battery Degradation
Hi,
I wonder if this might help? Maybe I am too late on this. But I recently was having trouble with the very same sudden poor battery issue after using my HTC Rhodium for more than a year with excellent battery life. At the same time I noticed that I was having trouble staying on my cell phone network, also suddenly. This had not been a problem before. Reading the forums in another area discussing signal issues someone pointed to the existence of "CMBandSwitch.exe" which lives in the Windows folder on a standard ROM. When you run this you can switch from "Auto" mode where the phone polls all available network bands and instead have the phone work only on the GSM band. You can also specify your frequency if you wish. When I did this I solved both problems at the same time. My phone once again was able to hold the network just fine and my battery life returned to normal.
I am in Europe on an extended assignment and I can only think that the local network is undergoing some changes that has their 3G signal weak which was causing my phone to work harder at staying attached and therefore creating both poor connectivity and poor battery life.
I hope this will help you.

Battery Sudden Drops

Dear all,
Recently my Note is facing a weird problem. While my son is playing a game, the battery drops 20-30% in 10 minutes. If I shut down the tablet and re-power then the battery goes to normal again.
In the battery stats I can see a huge drop during game usage and then up again on reboot.
I performed a factory reset but the same happens....
I flashed the Kit Kat via Odin.... but the same
Any ideas?

Drain the battery down to below 5% then charge it to 100 and it should be fine. It happened to me once and after a full charge after a full drain it never did it again
Sent from my SM-G900T using Tapatalk

toyanucci said:
Drain the battery down to below 5% then charge it to 100 and it should be fine. It happened to me once and after a full charge after a full drain it never did it again
Sent from my SM-G900T using Tapatalk
Click to expand...
Click to collapse
This is what worries me.
I drained the battery and charged it fully powered off. It did it again. I drained the battery and charged it fully powered on. It did it again.
If I'm using it for browsing, papyrus, images etc its fine. This happens only in games and when i reboot the battery percentage is ok again.
strange....

STELIOSFAN said:
This is what worries me.
I drained the battery and charged it fully powered off. It did it again. I drained the battery and charged it fully powered on. It did it again.
If I'm using it for browsing, papyrus, images etc its fine. This happens only in games and when i reboot the battery percentage is ok again.
strange....
Click to expand...
Click to collapse
I had the exact same problem as you are describing but additionally, my overall battery life wasn't lasting as long as it should either. I ended up sending it to Samsung's repair center to get fixed. I'm not sure what they did but some other people on the forums suggested it was a motherboard issue.

So the capacity of the battery seemed just fine but the readings were crazy (dropping from 50 to 5 in minutes and then on reboot back on 50).
After 2-3 full cycles of charging nothing changed. Flashed fw nothing changed. Went to Samsung service and they just informed me that they changed the battery and now performing final checks.
Hope this will solve the issue. I'm too lucky that I am in the "6 months warranty" window for battery...

How does one go about sending it into Samsung? After getting it back, did you see a significant change?
I've been debating doing this but wasn't sure how to go about it.

I haven't got it back yet. They just called me and they said that apart from the battery, they need to change another part (the telephone operator didn't know which part) and I'm going to receive it tomorrow.
So I'll let you know once I receive it.

STELIOSFAN said:
Dear all,
Recently my Note is facing a weird problem. While my son is playing a game, the battery drops 20-30% in 10 minutes. If I shut down the tablet and re-power then the battery goes to normal again.
In the battery stats I can see a huge drop during game usage and then up again on reboot.
I performed a factory reset but the same happens....
I flashed the Kit Kat via Odin.... but the same
Any ideas?
Click to expand...
Click to collapse
Did you fix the problem ? I have the same problem and i don't know how to fix it. (i am with 4.3 not rooted).

Rupar4o said:
Did you fix the problem ? I have the same problem and i don't know how to fix it. (i am with 4.3 not rooted).
Click to expand...
Click to collapse
After trying everything (flashing different roms via odin, factory reset, full battery cycles etc) the problem never went away.
Went to Samsung service. They checked the battery and had to replace it.... within the warranty.

Same issue here. Just got an email saying its fixed. They changed the charging port and lcd. Weird that they replaced the lcd.

Well I got it back. Seems they broke the s pen function when taking it out or putting in. The tablet thinks it's always out of its slot. I guess another 2 weeks without this thing. What a pain in the ass. Times like this makes me wish I bought an ipad where I could just walk into the store and get it fixed that day.

I had the same problem. I sent it back on Monday and got it back 7 days later. They did not say what they changed, but now everything is working fine. I even got a new usb cable and a magnetic Germany flag

I sent mine in for an overheating problem and they changed the charging port and gave me a new cable. I initially also had the random drops in battery but seems to be better now.. They said bad voltage going to charging the battery or something. Still have overheating so gotta send it in again?
Sent from my SM-P600 using XDA Premium 4 mobile app

So guys did you get it fixed? I have exactly the same problem. I have sent it to fix at the sam service - they changed the charging port, but it didn't help anything. 1,5 years of normal usage and now I can pretty much throw it into the toilet. God damn POS!

Galaxy Note 10.1 2014 battery drops
Hello all,
Just wanted to inform you all that I have been experiencing these battery drops (yesterday from 93% to a mere 5% in a matter of minutes) for a very long time now. I am running under the latest 4.4.2 stock firmware.
Also, battery life is way below par (understatement !), where the Note sometimes drops to around or below 5% (the magic number below which the screen starts to dim pretty dramatically and there's no way to influence that)
Funny thing is that after the battery drops to below 5% or even 1 or 2%, it's still possible to use the tablet for quite a number of hours afterwards, which suggests it may be something with the logic estimating/determining the remaining battery capacity, rather than the battery itself....)
Now I've tried draining the battery and fully recharging it multiple times/ resetting the stats using free apps / revert to factory settings etc.
All to no avail unfortunately, this problem simply keeps coming back.
(By the way: Apart from the battery and battery life, the Note is an excellent device, and delivers as promised.
Please also note that charging it through the microUSB cable is also simple, stable and relatively fast, unless you compare it of course to my all new Samsung Galaxy Note 4, which has a superior fast charge mode and offers the highest possible battery-life at this moment and easily beats any other smartphone (including the usual suspects from that Cupertino-based firm of which I can't force my mind to remember the name of.....) in this price-quality and performance category )
As for warranty:
Battery is no longer under warranty, the device itself is.
As such, I will now get the battery replaced by a new Samsung OEM-battery first, and see if that resolves the issue.
If it doesn't help, I will send it in for repair for Samsung.
I will keep you all informed on the resolution and cause.
Likewise, if there's anyone that has gotten to the root cause of this issue, please let me / let us know
Some users reported some 'magic part' OTHER than the battery itself (motherboard / charging circuit or even the lcd ??) having been replaced by Samsung after sending it in for repair.
That information could be very valuable to us all in trying to get Samsung to resolve the issue, so I would really appreciate it if someone would share this info in this thread.

Hey I know that there hasn't been much activity on this particular thread, but i too have been experiencing this problem for over a year now. I sent it into samsung twice and it still never fixed the issue and by the time i was going to send it in the 3rd time it was out of warranty. I personally removed the back cover and unplugged the battery for a while and that did not help. I have tried flashing different ROMS and kernels to no avail until last week. I flashed Temasek's Unofficial Build found here http://forum.xda-developers.com/gal...t/lt03wifi-temaseks-unofficial-build-t2980604 and after 3 full power cycles i have not had a single random drop yet i even managed to go 3 days with 6 hours of screen on time which is a record for me with this device. Not sure if it will help everyone but this seems to have solved my problem and i am thrilled! Also (as embarrassing as it is) i played 2.5 hours of Clash of Clans straight without a single random drop either.

I am beginning to have the issue as well on my P605v. Has there been any progress with your battery replacement? @mroset

KwestJones said:
I am beginning to have the issue as well on my P605v. Has there been any progress with your battery replacement? @mroset
Click to expand...
Click to collapse
Hello KwestJones,
I've successfully replaced the battery in the Note 10.1 2014, and it has improved things. With a little care, this is easy to do. Just removing the battery connector is a bit typical, you need to lift it carefully and slightly to remove it.
The result is not as drastic of an improvement as I would like to have seen, but at least the sudden drops in battery capacity percentage seem to be under control now.
I am doing a video test now, and will see how it behaves and let you know.
BR,
Maarten

Very curious to hear if replacing the battery corrected this issue. I've been experiencing this same battery drop issue for 2 or 3 months and the unit is well outside of warranty. Hoping there's a simpler fix, but willing to replace the battery if that will work since the tablet itself is still a great unit.

Complete factory reset should clear the Android Coulometer's data base or learning algorithm. Just clearing options of Battery Monitor Widget for rooted devices won't help. There are some other apps, which seem to help if the charge level never reaches 100%, a related, but not identical problem.
I have an old tablet suffering from this, with a tweaked custom rom, and i didn't want to clear and setup that completely. The algorithm or database is "learning" again, and the capacity jumps have become fewer and smaller over the last months. It should depend on how long the device was used and never reset before the incident. In my case over a year.
Itvs much like my cars fuel calculator, which won't work correctly during traffic light stops. Right after starting the engine, fuel consumption can raise several liters/h, when the car don't drive, as it uses the last sampled value(every 30 meters). And you need several kilometers to drive to have these levels drop to realistic ones again. While after a long driving distance, a traffic light stop will hardly have an influence.

[Q] Weird battery issue

Hey guys, just got the phone on Saturday. It's been awesome until today. I noticed it has been draining super fast. I put it on the charger and it would not charge past 89%, and at 89% it said there was 1m left until full. I turned off the phone and let it charge to 100%, but when I turned it on it almost immediately dropped to 90%.
What could be the issue? Do you think a simple factory reset could fix it, or should I take the phone back to Best Buy for a new one?
Edit: using the corded charger that came with the phone

This just started happening to me as well.
My phone will say fully charged, and when I unplug it will immediately drop to ~91-93%. Not sure if it's a faulty battery or what not, as I too have been using the wireless charger and block given to me with the phone.
I'm going to Best Buy during my lunch today to see if they have any idea and will update if there's any useful news.

that is weird. I haven't had the issue on mine, though I only charge with a USB cable (I don't have a wireless pad). From my rooting days, there is a battery config file that remembers things like battery charging history, so a factory reset might be useful, though it's a painful process to get a phone back up and customized fully after a reset.
Hopefully best buy has a better answer...though it might be as simple as replacing the phone, to which a factory reset might have been easier...

Anchor - how is the battery life on your phone?
I think my battery might be a defective one as I can barely get through half of a day with 1 1/2 hours of SOT - and that includes taking several steps to try to maximize battery life.

Just a quick update:
Stopped by Best Buy today and talked to a surprisingly knowledgable Samsung person. He said I'm the second person with an issue like this and believes it's a faulty battery, so they're going to give me a new phone.
To my knowledge this is the only explanation as my battery was lasting half a day.

Same here... I just got this phone yesterday and the battery drains very quick. I will return it and get the htc M9.

millsmillsmills said:
Just a quick update:
Stopped by Best Buy today and talked to a surprisingly knowledgable Samsung person. He said I'm the second person with an issue like this and believes it's a faulty battery, so they're going to give me a new phone.
To my knowledge this is the only explanation as my battery was lasting half a day.
Click to expand...
Click to collapse
Final Update: Battery has been much much better on the new phone. Previously I'd be around 50% by lunchtime and today I'm at 85% with nearly the exact same use.

what was your usge in your previous phone?
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