Database Info

4800mAh extended battery problems

I've found that the current stock battery for the HTC uni is simply too sh*t, that being said, i have purchased an extended battery (4800mAh)
I've had a few problems now. First and foremost, if i leave it to charge overnight or similar, it will say 100%, but if i unplug the charger, it will say 31%. What the f*ck.
I ran some tests on it (batterybench.net) and i seem to get 241 minutes with only radio on. That doesn't seem right for a battery of this capacity.
I also purchased a 3200mAh battery and encountered similar problems in regards to runtime. Is there something wrong with my phone? I've turned off beam and all that, underclocked, bla bla, i still seem to struggle. Any ideas?

legano said:
I've found that the current stock battery for the HTC uni is simply too sh*t, that being said, i have purchased an extended battery (4800mAh)
I've had a few problems now. First and foremost, if i leave it to charge overnight or similar, it will say 100%, but if i unplug the charger, it will say 31%. What the f*ck.
I ran some tests on it (batterybench.net) and i seem to get 241 minutes with only radio on. That doesn't seem right for a battery of this capacity.
I also purchased a 3200mAh battery and encountered similar problems in regards to runtime. Is there something wrong with my phone? I've turned off beam and all that, underclocked, bla bla, i still seem to struggle. Any ideas?
Click to expand...
Click to collapse
thats not a device battery problem.
your charger is faulty.
charge your device via usb(connect to your computer) and when it shows 100% be on the battery screen only and then plug usb.
else flash another rom and see,if you are still not satisfied.
i faced this problem earlier with my htc adapter for my htc gene(p3400i).
So its not a battery problem.

karan999 said:
thats not a device battery problem.
your charger is faulty.
charge your device via usb(connect to your computer) and when it shows 100% be on the battery screen only and then plug usb.
else flash another rom and see,if you are still not satisfied.
i faced this problem earlier with my htc adapter for my htc gene(p3400i).
So its not a battery problem.
Click to expand...
Click to collapse
Thanks, but unfortunately that doesn't seem to solve the problem.

I tried 4800 battery bought online, however it only lasts 8 hours, then I finally got a standard replacement battery through a HTC dealer, and it lasts TWICE AS LONG as the so called double battery??

Move to accesories
There is a proper place to discuss this topic

As I said before - 3200 mAh battery is the best, don't buy 4800, it's a crap

[Q] Aftermarket batteries + charger, power level glitch

I bought 2 x aftermarket 1600mah batteries from eBay with a charger to charge them directly.
I don't have high hopes but I figured for £10 I couldn't really go wrong.
So I charged one of the new batteries in the supplied charger overnight and tried it out this morning. At first boot, my Desire HD said the battery was empty and to connect the charger. If I leave it the phone shuts down after 20 seconds. I did connect the charger and and then instantly the phone said the battery was 99% full. After I disconnected the charger the phone has run all day on one of these ebay batteries, with life being comparable to the stock battery.
My question is, is this some kind of software glitch? Or a problem with the charger pergaps? I am using Cyanogenmod 7 (Gingerbread). Anyone else seen this issue?
I'd like the phone to report the correct power level when I swap the battery, so that it doesn't shut down automatically, and can be used when Im away from a charger.

where can i find a 1600mAH official battery??

ds4 said:
where can i find a 1600mAH official battery??
Click to expand...
Click to collapse
You can't no such thing as an official one
E=Mc2

I have the same issue with what sounds like the same batteries and charger running cm6. The problem isn't there when I use the stock rom. Think it's a cm issue. I don't know of a fix except that sometimes wiping battery stats before booting sorts it out. Good luck and if you find a fix, please post.
Sent from my Desire HD using XDA App

pwraggcan said:
I have the same issue with what sounds like the same batteries and charger running cm6. The problem isn't there when I use the stock rom. Think it's a cm issue. I don't know of a fix except that sometimes wiping battery stats before booting sorts it out. Good luck and if you find a fix, please post.
Click to expand...
Click to collapse
Not a fix, just my workaround:
I charge the phone with the unofficial 1600mah battery overnight, and run it all day until it runs out. Then I switch to the official HTC battery, which lasts me all evening.
For example I went to a wedding Saturday, and taking pictures/playing Angry Birds during the boring bits, the two batteries easily lasted the whole day. I don't think the 1600mah battery is any better than stock though. Wouldn't say it's worse mind.
I think the CM7 builds have issues around battery life with WIFI/Bluetooth and Cell standby. From what i can see.
I'll let you know if I find a fix though!

[Q] Battery Staying at 100%

I've noticed that the battery meter will sometimes stay at 100% for a while and then all of the sudden drop to the actual percentage sometime later. A reboot after unplugging the phone will fix the problem and report the battery % at the correct level. I was wondering how many other people were experiencing this, or if it is just a hit or miss thing?
I'm still on stock, unrooted, no mods. It's a straight out of the box Skyrocket.
Also, does the problem remain after rooting, modding, etc.?
I asked this on the battery results thread in general, and only received one response, so I figured this would be better in Q&A.

I had the same issue, but it has only happened one or two times.
Showed 100% for hours then rebooted and it showed 73%

I don't know how long you've had your phone, but it takes several cycles from full to empty for the battery to calibrate correctly. During that time you can get some really funky readings on it.

I am experiencing the same problem.
I've also had a hard time charging the phone. I've left it plugged in upwards of 18 hours, only to find it saying its only 83% charged. That may just be another symptom of the same problem though.
Do you think this is a phone or a battery issue?

bl2520 said:
I am experiencing the same problem.
I've also had a hard time charging the phone. I've left it plugged in upwards of 18 hours, only to find it saying its only 83% charged. That may just be another symptom of the same problem though.
Do you think this is a phone or a battery issue?
Click to expand...
Click to collapse
That sounds like you were plugged into a pc vs ac power and had heavy usage during that time.
Mine charges very quickly when at idle and plugged into the wall.

I've had my phone since the day it launched (the 6th) and just experienced this for the first time yesterday. It was indeed quite odd to see.

I have had this happen one time. I also noticed the phone got very hot.

It actually happend yesterday, stayed at 100% almost all day then just shut off and wouldnt reboot.... freaked me out!!
Sent from my SAMSUNG-SGH-I727 using xda premium

I have had this issue only when using an old iphone wall charger have. i can charge with any of our multiple other chargers with no issue....i use a usb cable plugged onto that apple wall charger and it happens every single time
Sent from my SGH-T989 using XDA App

I think that the battery is pretty wonky. I am not sure if the NFC addition is causing these issues but some people are having amazing life ans some people (me included) get horrible. I am getting a warranty exchange on my battery. No way I should drop 12% in an hour and 20 minutes when the only usage is 19 minutes of checking email. If I have to have it plugged in every time I turn around it is not exactly a wireless device now is it?
Sent from my SAMSUNG-SGH-I727 using XDA App

00mred00 said:
I have had this issue only when using an old iphone wall charger have. i can charge with any of our multiple other chargers with no issue....i use a usb cable plugged onto that apple wall charger and it happens every single time
Sent from my SGH-T989 using XDA App
Click to expand...
Click to collapse
i think that u just solved my and many more ppl's problem i am using the same iphone wall charger and i just plugged my usb in there and the battery wouyld stay at 100% all day long and when i connect the charger it says "disconnect charger battery is full" but i think this will solve my problem man thank u very much for posting this ! im glad ive read it because this is the my second galaxy s2 with the same problem i went to the warranty and the exchange it but still the same problem so now i know it HAS to be the iphone charger!!

Strange, I was just reading this thread and thinking I have never experienced this. Then I checked my battery stat and it showed 100% even though I've been using it for an hour and a half. I restarted and now reads 90%.
Had my phone for almost a month. Rooted only on stock ROM. Just took it off USB cable from laptop an hour and a half ago.

yvrRome said:
Strange, I was just reading this thread and thinking I have never experienced this. Then I checked my battery stat and it showed 100% even though I've been using it for an hour and a half. I restarted and now reads 90%.
Had my phone for almost a month. Rooted only on stock ROM. Just took it off USB cable from laptop an hour and a half ago.
Click to expand...
Click to collapse
I had the same issue. But I read on a thread that cause is that u use a charger & cable that is not Samsung. I had tested and it is true. If u charge with the charger it will befine
That's was stupid of me. I think I am on that thread
Sent from my SGH-I727 using XDA App

My still stay at 100% all time with Samsung charger, any fix?

cgm8 said:
My still stay at 100% all time with Samsung charger, any fix?
Click to expand...
Click to collapse
I think we narrowed it down to being a bad charging circuit in the phone or battery triggered by a .1a charger.
When we got our new skyrockets they stopped doing it.
Sent from my SAMSUNG-SGH-I727 using XDA App

cgm8 said:
My still stay at 100% all time with Samsung charger, any fix?
Click to expand...
Click to collapse
I was powering my phone off, plugging the power in and allowing it to recharge. The phone would automatically power on as soon as I connected the power but I didn't think that mattered. It turns out it did. If I powered the phone on and then connected the power, the battery meter would work correctly.
This was different the Captivate I had previously. That phone had the capability to charge while powered off. There was even a charging graphic that displayed while the phone was off.
The Skyrocket did not have this same feature when I originally bought it. However, ATT did an update at some point and now it does. I've been unable to re-create the stuck battery gauge since that update.

please only use the charger that came with the phone. other chargers, after prolonged usage, may cause issues.

The charger that came with most skyrockets is a .1a charger and causes the issue as well. A few reported getting .7a chargers in the box but most have been .1
I have tested the iPhone charger theory on 5 phones now. Phone 1 and 2 experienced the issue. Phones 3-5 did not
Its more than just the charger. The phones experiencing this either have a bad battery or it's in the phone
orlandoxpolice said:
please only use the charger that came with the phone. other chargers, after prolonged usage, may cause issues.
Click to expand...
Click to collapse
Sent from my SAMSUNG-SGH-I727 using XDA App

From day 1 with the skyrocket, I have used an old wall charger and cable and had this problem daily. I plug it in at night and in the morning, it's at 100% until I reboot, or some other random event that drops the percentage to the real battery stats.
Because of this thread, I dug out the box and used the wall charger and cable that came with it, and this morning shortly after unplugging the phone, it was at 99% and dropping, just as it should. Very glad I tried this.

Ummm no.....
00mred00 said:
The charger that came with most skyrockets is a .1a charger and causes the issue as well. A few reported getting .7a chargers in the box but most have been .1
I have tested the iPhone charger theory on 5 phones now. Phone 1 and 2 experienced the issue. Phones 3-5 did not
Its more than just the charger. The phones experiencing this either have a bad battery or it's in the phone
Sent from my SAMSUNG-SGH-I727 using XDA App
Click to expand...
Click to collapse
I did a recheck of my black cube SR wall charger (Samsung part # ETA0U80JBE).. It is NOT .1a it is 1.0amps - which - interestingly enough is EXACTLY what my iPhone3g power cube right next to it delivers.
The .7am Samsung charger has the usb connector on the side, and is part number ETA0U60JBE - delivering 5v at .7 amps (30% decrease over the little cube device). That was the charger my SGS-II had. My S/R came with the 1.0 amp ETA0U80JBE version.
One amp will charge the phone MUCH faster than the USB port. Per the spec, the typical USB device cannot drain more than 500mA (1/2 of what the power cube supplies to the phone).
Unfortunately Apple and Samsung both have the cubes pretty well locked up, so I cant compare the components, but at a first glace they appear to be absolutely identical, both putting out about 5.1 volts at zero load.

[Q] Does not recognize battery

Hello everybody!
I have a tranformer tf101 with + / - 6 months of use. After being stopped a few weeks (drained battery) it no longer charge and the system does not recognize the battery. When I plug the charger he starts the boot and not charge the battery. In settings with the battery status is "unknown" and a question mark on top.
I've given a factory reset and nothing. Has also has opened the tablet and unplugged and plugged the battery again. I did a test trying to turn on the device without battery and it turned on like before, like when connected (interrogation and status unknown).
The charger is apparently working, coz is charging dock.
I can not send to warranty because I live in Brazil...
Can anyone give me a light? Have researched a lot and found nothing ...
Thank you all!

Try plugging it into a USB port on your PC and leave it plugged in overnight, turned off.

Goatshocker said:
Try plugging it into a USB port on your PC and leave it plugged in overnight, turned off.
Click to expand...
Click to collapse
thanks for the reply! I've done it, one entire day on energy and other day directly to the USB... But nothing!

Well... It might be possible that the battery is busted from being discharged for so long.
Although... Does it work on battery or does it instantly die when you unplug it?

When I disconnect die instantly! But if is on dock, he stay on

Yeah sounds like the battery is busted then. It works from the dock because the dock acts as a charger for the tablet, just like the 'real' charger.

Strange how a battery with six months of use given problem.
Would if I try to put a higher charge on it (20v) and force her to reactivate might work?

Batteries only last so long, and yours sounds like it is shot.
It's very strange that yours went bad after such a short amount of time.
If the charger charges the dock but not the Transformer, then it's not the charger.
You could possibly buy a replacement battery and perform the surgery yourself.
Other than that, RMAing is the only thing that can be done.
Sent from my Transformer TF101 using Tapatalk 2

Software should not be the problem, right?
I'll try to overload the battery to see if she resurrects.
Then post the result!
thanks all for now!

mtpoth said:
Strange how a battery with six months of use given problem.
Would if I try to put a higher charge on it (20v) and force her to reactivate might work?
Click to expand...
Click to collapse
It not that strange. Its not the age per se thats the issue here - its that it was discharged for so long. Once a battery reaches a certain level, it simply wont charge anymore.
Applying 20v will just blow the fuse in the TF, or worse - fry the whole thing... Dont do that
I read somewhere the fuse blows at 17v or something.
And even if we ignore the tablet for a second, applying higher voltage to the battery will just kill the few cells still alive.
And, in worst case, it can even cause the battery to explode, possibly starting a fire and/or damage a person. Although thats not likely with such a low over-volting as 20v. Im just trying to tell you not to put more voltage on a batter than its designed to get
The only way to 'possibly' repair a dead battery is to trickle-charge it, meaning applying a low voltage over a period of time.

Hello Goatshocker!
This charge 20V must be made directly to the battery and not in TF, it really would kill him! And it would be just a "scare" the battery in about 2 seconds only, the rest of the charge would be normally done after (15v). I've done this with cell phone battery several times!
As the battery is dead it seems, think it's the only option.
But before doing so I'll take you on an assistance to make sure it is the battery.

mtpoth said:
And it would be just a "scare" the battery in about 2 seconds only, the rest of the charge would be normally done after (15v). I've done this with cell phone battery several times!
Click to expand...
Click to collapse
Ah yes, you are quite correct about that. I completely forgot about that method.
Yes, that might indeed work. But I would only do that as a last-resort, although you seem to be quite out of other alternatives

I took him in an assistance yesterday. Tomorrow should tell me the problem. Depending on the result already do the "scare" on battery.
then put the result here!

I had a similar problem. I tried connecting it to different sockets and it finaly charged.
Sent from my U20i using XDA

k.janku1 said:
I had a similar problem. I tried connecting it to different sockets and it finaly charged.
Sent from my U20i using XDA
Click to expand...
Click to collapse
whath kind of sockets you used?

Unfortunately, the overcharging did not work! The battery was completely dead, not sure how this is possible! But it's a valuable tip! The battery dock is the same tablet. So I changed them and I was working with the tablet and dock only works on energy.
Can anyone advise me a reliable site to purchase this battery? The model is ASUS C21-EP101
ty all!

[Q] Battery stays at 50%.

So I got my hands on a problematic OPO a few days ago that wont charge at all.
It wont charge when connected to the wall charger nor when plugged in a PC. The only way the previous owner was able to charge it was taking to a phone repair service where they would just take out the battery, charge it using an external battery charger and put it back in. Then the phone shows 50% battery all the time, never goes up or down, and lasts around 2-3 days. The owner got tired of visiting the repair shop every 2 or 3 days to do that and handed it over to me. I thought the USB flex cable is the problem so I ordered this one: (oops cant post links) to replace it but it wont be here for another 3 weeks.
So these are the facts so far:
Battery has been replaced, so its not a faulty one(or so I have been said)
Charger and usb cable are OK as I have tried a few different ones.
Phone connects to the PC and can browse it for files.
When switched ON and plugged in battery says "Not Charging"
When switched OFF the green battery animates to 100% but never goes up more than 50% permanently.
Any ideas on where I can find an external battery charger(not a powerbank)? Ebay and Aliexpress don't seem to have anything like that.
Did I make the right choice ordering that flex cable or did I only waste my money?
Any ideas as to what the problem might be? Anything I can try at the moment?
Thanks in advance
Best regards,

Just a thought, but have you tried flashing the factory images, or even another ROM? It could be a software issue, but if that doesn't work then I am not sure what the problem is.

jpwall said:
Just a thought, but have you tried flashing the factory images, or even another ROM? It could be a software issue, but if that doesn't work then I am not sure what the problem is.
Click to expand...
Click to collapse
Hmm its on the stock CM11 one. Guess maybe trying a custom one wouldn't hurt.
This is the phone's version.
CYANOGEN VERSION 11.0-XNPH05Q
ANDROID VERSION 4.4.4
BASEBAND VERSION MPSS.DI.2.0.1.C7-00020-M8974AAAAANPZM-1
KERNEL VERSION 3.4.0-cyanogenmod #1
Build Date Wed Jan 28
Build Number KTU84Q
SELinux status Enforcing
Click to expand...
Click to collapse
Isn't this the stock one?

installed ColorOS to rule out the software but no luck. It says: "Battery error. Check the battery contact status". Should I order a new battery or am I wasting even more money?

Battery Stuck at 50%
Hi All,
Even I have faced this issue 2 days back. But it was resolved when I replaced my battery with the new one. First thing is that the replacement battery should be empty for eg. 0%. After you inserted the replacement battery keep the phone for 1/2 hr charging. After 1/2hr press the power button once if its boots fine and then the battery percentage will immediately reset from 50% to 0% and starting showing the charging animation once you boot into the OS. Whereas if it doesn't boot then press and hold the power button for atleast 5 vibrations without the micro usb connected to the power source. Then again keep the phone for charging for 5mins and again press the power button. This time it will definitely boot into the OS and the battery percentage will reset from 50% to 0% and it will start charging. Then keep the phone for charging until it reaches 100%. I hope this would help all the people who are facing this kind of issues.

sribha said:
Hi All,
Even I have faced this issue 2 days back. But it was resolved when I replaced my battery with the new one. First thing is that the replacement battery should be empty for eg. 0%. After you inserted the replacement battery keep the phone for 1/2 hr charging. After 1/2hr press the power button once if its boots fine and then the battery percentage will immediately reset from 50% to 0% and starting showing the charging animation once you boot into the OS. Whereas if it doesn't boot then press and hold the power button for atleast 5 vibrations without the micro usb connected to the power source. Then again keep the phone for charging for 5mins and again press the power button. This time it will definitely boot into the OS and the battery percentage will reset from 50% to 0% and it will start charging. Then keep the phone for charging until it reaches 100%. I hope this would help all the people who are facing this kind of issues.
Click to expand...
Click to collapse
Just had the same problem after replacing a battery. when looking at the battery connectors, the bottom right of the 6 contacts is bad.
Solution, take your battery back and tell them to give you another one. If it is on the board, clean it or replace the motherboard.

I found the issue! my OP3 has the same problem after i dropped my phone 1 week after i changed my battery. Becoz i did not put double sided tape when i replace the battery, the battery connected ripped off the connector on the mainboard, hence, only half of the connector on the motherboard now. So, technically speaking, the battery only connected to the mainboard with half the connector. Not sure if you understand what im talking about