Fellow universal users who suffer from battery problems, i know this issue is reccuring and is in many threads and forums now. However i am sorry to increase the talk in another thread. I just thought i would share my peice of advice.
Attached is a pic of the universal battery and below is a little procedure that you might wanna try.
Lets say your universal battery is dying after 10 mins and you just had charged it overnight (meter says it died at 95% or whatever.. ) here is what you do.
1- take the battery out locate the pin provided in this pic attached. its the second pin from the top if you are holding the battery with the connector being to the upper right corner (just see the pic)
2- cover this pin with a thin peice of tape that you will leave temporarily. till the battery fully dies.
3- turn your universal on after placing the battery in it again
4- change the power settings in a way that leaves the universal on for all the time unless you manually turn it off.. so all the power savings are off.
5- let your battery drain all the way until it just turns the universal off.
6- take the battery out and remove the insulation from that pin
7- turn your universal on again and let it charge overnight or till the light turns green.
8- this fixed my universals' battery and now mine turns off at 5%
p.s. while the universal is running and the pin is insulated you will notice that the battery indicator that shows the percentage left doesn't work. (thats the whole point making the ppc blind and not being able to read how much is in the batter and take full advantage of whats in it as far as power goes, this will make the battery realize that it was drained more than usual and forces it to recalculate or recalibrate itself.
by the way you will also notice that the universal wont be able to get charged while that pin is insulated. so again my advice is fully charge your battery , take it out, insulate the pin then drain it all the way , take the insulation out and recharge until light is green.
please post if you had a successful result and hopefully for all who are suffering from this battery problem now they have one more hope.
This is what they call "Resetting" or "Formatting", nad while it's good for NiMH and neccesary for NiCd batteries, it can actually prove harmful to the LiION battery of the Universal, since it may over-deplete the battery.
Use with care, and only if you can't afford a new battery, since this might leave you without a battery!
Deeply discharging of Lithium Batteries
People may remember the videos of burning Dells and Macs. Deeply discharging lithium cells puts them into a critical stage. You may loose a bit more than only the battery ...
well its not deeply discharging
i monitored mine and was playing games on my uni until it turned off once it did then i took the tape out and fully charged it.. then viola it worked fine. i dont see any risk plus yes there is in the lithium batteries a problem similar to the nicad research about it and verify.. anyway you dont have to follow, just saying this worked on 3 of my batteries.
Cheers
NiCd yes, but those are of a completely different architecture. There's something called the Memory effect there, which means that the battery retains the previous charge as the threshold for the next charge, meaning they can't be "topped up", because then only the "top-up" can be drained from the battery.
Lithium Ion batteries retain this memory effect too, that's true. But in them, this is nearly insignificant, meaning the can be topped up at any time, even at 99%, and the almost full charge can be drained. Almost, because there is a minimum threshold beneath which the internal mechanism changes and the battery becomes unusable.
That is why I recommend against deep-discharging the batteries. What I did once was ordered a battery, and noted that it came with a six-month warranty. Now I get a new battery on the warranty(free) every six months, regardless of the state of the old one. But usually by then it startsx to show signs of weakness...
i will try this swith my old bat after my new bat is here. thanks for the fix
greets
Juun said:
i will try this swith my old bat after my new bat is here. thanks for the fix
greets
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no problem, how did it work out guys.. anyone tried it yet
?
mzalan said:
Lithium Ion batteries retain this memory effect too, that's true. But in them, this is nearly insignificant, meaning the can be topped up at any time, even at 99%, and the almost full charge can be drained. Almost, because there is a minimum threshold beneath which the internal mechanism changes and the battery becomes unusable.
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Unfortunately, the Memory Effect in Li-Ion batteries can be made worse if the battery is of low quality and/or has impurities in it (due to manufacturing or age). This is why our original, top quality, batteries are dying (due to age) and the cheap ones we buy off ebay are pretty bad (low quality)
mzalan said:
That is why I recommend against deep-discharging the batteries. What I did once was ordered a battery, and noted that it came with a six-month warranty.
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I second that. This may be a fix, but be careful!! As with anything in these forums, it caries its own risks.
Probably best just to buy a battery from a respectable shop\dealer and get a warranty with it...
hey guys ... i´ve tried it ...
i think it works, give it a try.
takes 4-6 hours to completely discharge, the i´ve loaded it one night long. today i´ve played long time with my colegues at work, used bluetooth several times, hat some calls... and now, after 10 hours without charging it has 45 % of charge.
at the moment i turned the brightnes to the maximum, with wifi, beam, phone and bluetooth on, to see at wich percent my universal will turn of.
i give you a notice if this happens.
cheers
now ... finaly it turns off at 19 % !
but ... without any warnings or notifications...
but before it always was shutting down at 40 %, now with shutdown value at 19% the battery is more useful as before.
maybe it could help someone.
cheers
Didn't work form my orginal battery.
pa3x said:
Didn't work form my orginal battery.
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at what percentage does your battery turn off ? try it again does your battery last longer with the tape on?
webmin said:
now ... finaly it turns off at 19 % !
but ... without any warnings or notifications...
but before it always was shutting down at 40 %, now with shutdown value at 19% the battery is more useful as before.
maybe it could help someone.
cheers
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sounds great try to guve it another shot if you want .. fully charge it and then put the tape on until the universal turns off . maybe you will get closer to zero like i did and if not then.. meh 19% isnt that bad compared to people shutting off at 40 and 80 ...
the only reason i came up with this method was because i read in the wiki that some pople discharged using led or whatever to depelte tha battery or even on bootloader. i thought about it in a way that would make mnore sence using the device itself to deplete its own battery (think about the ammount of power tha led will be drwaing vs the amount the ppc will be drawing ) maybe the chip in the battery claiberates itself on the ammount of draw ... most likely not but it crossed my mind like that so i gave it a shot and it seems to be an exploration by surprise
cheers
dj_gabzz said:
at what percentage does your battery turn off ? try it again does your battery last longer with the tape on?
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With or without tape on 96%
dj_gabzz said:
well its not deeply discharging
i monitored mine and was playing games on my uni until it turned off once it did then i took the tape out and fully charged it.. then viola it worked fine. i dont see any risk plus yes there is in the lithium batteries a problem similar to the nicad research about it and verify.. anyway you dont have to follow, just saying this worked on 3 of my batteries.
Cheers
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Click to collapse
It sounds very much like "deeply discharging" to me - you are disabling the sensor which is also the failsafe circuit!!! The sensor is not there just to "annoy you" by shutting off early, it's there for safety reasons!
All Lithium ION batteries shut off quite a bit BEFORE they are fully discharged. This is because a truly 100% discharged Li-ION battery (or even close, like 95%) becomes unstable, and this can cause it to set on fire, leak acid, and even violently explode causing you serious injury or burning down your house (people have actually been killed by exploding Li-ION batteries). This is rare yes, but it does happen and it has happened.
We all know that the sensor in some Li-ION batteries can lose its calibration over time, though this is NOT due to a "memory effect", NiCD batteries were the only chemistry which suffered from that problem. But you have no way of knowing if the sensor is really de-calibrated, or it is shutting off because of a fault with the battery, or even that the battery is just nearly dead.
For gods sake people please be careful, this hack may look "cool" and yes it probably will work on quite a few batteries, but it can also be extremely dangerous, and is just not worth the risk, especially when you can get a new battery for less than $20!
Check out these videos to see how violent and extreme a Li-ION explosion can be...
http://www.youtube.com/watch?v=k5f0VCoFuFM
http://www.youtube.com/watch?v=QJCZ4ayioCU
sl9 said:
It sounds very much like "deeply discharging" to me - you are disabling the sensor which is also the failsafe circuit!!! The sensor is not there just to "annoy you" by shutting off early, it's there for safety reasons!
All Lithium ION batteries shut off quite a bit BEFORE they are fully discharged. This is because a truly 100% discharged Li-ION battery (or even close, like 95%) becomes unstable, and this can cause it to set on fire, leak acid, and even violently explode causing you serious injury or burning down your house (people have actually been killed by exploding Li-ION batteries). This is rare yes, but it does happen and it has happened.
We all know that the sensor in some Li-ION batteries can lose its calibration over time, though this is NOT due to a "memory effect", NiCD batteries were the only chemistry which suffered from that problem. But you have no way of knowing if the sensor is really de-calibrated, or it is shutting off because of a fault with the battery, or even that the battery is just nearly dead.
For gods sake people please be careful, this hack may look "cool" and yes it probably will work on quite a few batteries, but it can also be extremely dangerous, and is just not worth the risk, especially when you can get a new battery for less than $20!
Check out these videos to see how violent and extreme a Li-ION explosion can be...
http://www.youtube.com/watch?v=k5f0VCoFuFM
http://www.youtube.com/watch?v=QJCZ4ayioCU
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thanks you for the info.
i dont mean to harm noone.. i just tried it and it worked for me and thought i would share.. for all future readers. dont take risks if this is really true..
a new battery for 20 $ ? where ?
in germany you have to pay nearby 50 -60 $ for a new battery, and you never know if it is a good one or some old crap.
for that reason i will try to maximise the life of my battery ...
webmin said:
a new battery for 20 $ ? where ?
in germany you have to pay nearby 50 -60 $ for a new battery, and you never know if it is a good one or some old crap.
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Or you get new crap
hehe yes, thats true.
****! It worked on my UNI. I've used my original battery which is about 2 to 2.5 years old. As of now still 77% after 8 hours with beam on, bright max, gprs on. WOW! Thank You!!!!!
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?
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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.
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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
Well like many here I've had issues with my Gtab always showing 100% on the battery then just shutting down. No amount of clearing stats via Clockword mod, calibration hacks or other tricks seemed to work. So I tried something different. Just swapped the battery.....
No I didn't find a source for them but I did have access to another Gtab. I had also bought a Gtab for my father a few months back. His battery stats always seemed correct. So I opened up both Gtabs and swapped batteries. Without doing anything else the battery stats on mine are now working properly and his started with the 100% charge error. I actually did NOT expect this problem to follow the battery.
I peeled back the battery cover and the charge circuit is built into the battery itself. The battery itself controls the LED and charge status and appears to supply the differential output for the board to know charge percentage. I didn't have small enough probes on my scope to pin out all the voltage points to see where the differences were but may go back and do that later.
Will update if I get into this further.
cahiatt said:
His battery stats always seemed correct. So I opened up both Gtabs and swapped batteries. Without doing anything else the battery stats on mine are now working properly and his started with the 100% charge error. I actually did NOT expect this problem to follow the battery.
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Thanks for confirming this so definitively, but, it is not surprising that this is a hardware issue--what you describe is almost to be expected because the battery on the gTab follows the Smart Battery System specifications.
See this thread for a script you can use to estimate the current battery level using the current voltage level.
I recently obtained the Xoom LTE version from a family member. It wasn't used in quite some time, so naturally, I plugged it in to charge. The indicator lit up white, so I turned it on. After boot, there was indication that the battery was charging, but remained at zero percent. I left it to charge for about 25 minutes and when I came back to it, still zero percent. I removed the charger, the device shut down immediately. I plugged the charger in again noticing that the indicator light did indeed light up, but after a short amount of time it turned off. I also tried using the dock, and the same results occurred.
Basically, the device is only operable while plugged it. It's been on the dock for a couple hours now and the battery is still showing zero percent. I'm thinking it's a battery problem, but what else could it be? Is it possible to change the battery in this thing, or do I need to send it into Motorola? I did a factory reset, but nothing has changed.
Thanks for any help, I really appreciate it!
Best bet is to send it in for a new battery. Sounds like the current one is shot.
Yep usually Li-ion battery does that, you said they haven't used it for months? My bet is that the battery is fine, but it's dead due to the fact it went under the level of voltage where it can't be recharged. It's like bricking your phone... Lol
Definitely sounds like a bad battery.
You can try to order one online and replace it on your own (here is ifixit's teardown guide).
Or you can send it in the Motorola and have them do it for $99. If you've never opened up a tablet/phone/etc before, I'd highly recommend this route. It might look easy but I totally borked an old phone thinking I was handier than I actually am...
Your battery is covered by your warranty if its fully charged capacity falls below 50% of rated capacity in the first year of ownership. Out of warranty replacement of the battery (OOW due to the length of ownership or physical abuse) is $99.
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https://motorola-global-portal.cust...n/L3RpbWUvMTM0OTM2MDU4Mi9zaWQvV3hrT3NUN2w=#w6
Hi i bought a used sensation of ebay from a reputable seller and it arrived the other day. The two main problems i've been having is also the battery taking long to charge and the heating issue.
Firstly im not sure if the heating issue occurs on stock rom as i was not on it very long but on any custom JB rom the Bottom part of the phone gets very hot very quickly. I used a battery monitor and it tells me its the battery temp that's going up but when i pop out the back cover it seems to be coming from right at the bottom under where the micro sd card is. However i think i have kind of solved this by flashing the Inspiration 1.01 ICS 4.04 rom with bricked Kernel. Now the phone only reaches a max of abut 40.5 degrees and the heat is spread around the whole back case rather than one spot.
Secondly the battery seems to be the big problem here. The phone didnt come with a charger but it did come with a USB cable to charge with. The problem is when i plug it into charge it takes long time to charge up. I used a battery monitoring app and the results are quite weird. When i plug it into charge it starts of drawing about 300ma of charge but after a while especially when it gets to around 30% battery the amount of power the battery is absorbing is around 70ma some times even as low as 40.
I have tried this with a Motorola charger as-well which is from a Motorola defy mini which had a higher Mah battery and the same thing happens.
Bearing in mind its a used phone the battery is probably quite old shall i try my luck with a new official replacement HTC battery or shall i try a new HTC Charger first?
Quick Update:
i took out the battery and then put it back in again and turned on the device and now the phone is reporting 65% when it was only at 47% before i turned it off. Secondly onthe battery contacts there seems to be a darker colour of gold where the pins actually meet which looks like a burnt contact but im not too sure.
I highly suggest you buy an Anker battery instead of HTC official one. If you've been loading battery with USB cable from another device (PC for example); it will load slowly!
About the battery percentage problem; I think this is a known problem on HTC Devices. It should show pretty accurately after a little while after restart.
I myself have the original battery, and I have the darker marks there too. Don't worry about those.. Because all you need is the Anker 1900mAh.
Thanks for your suggestion i have done a bit of research on the anker battery and it definitely seems like a must have not only for the better battery life but it apparently runs alot cooler than the stock battery aswell. Only £21 for a pack of 2 and a travel charger on amazon aswell!
Also shall i get a HTC charger or should i be fine with the Anker travel charger?
Anushan said:
Thanks for your suggestion i have done a bit of research on the anker battery and it definitely seems like a must have not only for the better battery life but it apparently runs alot cooler than the stock battery aswell. Only £21 for a pack of 2 and a travel charger on amazon aswell!
Also shall i get a HTC charger or should i be fine with the Anker travel charger?
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I don't know, but I am pretty sure both chargers will be just fine.
Awesome ordered one now should be here in a few days! Thanks for your help