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Battey Dies At 14%

williamj1

williamj1

Android Enthusiast
So recently, I've noticed that when my phone battery reaches about 13/14%, the phone seems to suddenly think it's empty and powers down. It's not much of an issue, as I'm very rarely that low. But it frustrating none the less.

After some investigation I've discovered it is obviously due to battery stats. I have realised it would have been wise of me to do some method thing every so often given how often I change ROM. But I didn't, so my question is what is the simplest / safest method to get my phone to display the correct % reading again and avoid this? In clockworks I know there is an option to wipe battery stats, but I doubt it is as simple as selecting that right? These things rarely are.

Thanks for any help :)
 
Yes it usually shuts down between 10-15%

This is nothing new. These batteries break if they discharge to 0%. They need charge to "keep the juices flowing" so it shuts down to protect the battery
 
SUroot said:
Yes it usually shuts down between 10-15%

This is nothing new. These batteries break if they discharge to 0%. They need charge to "keep the juices flowing" so it shuts down to protect the battery
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That is true.

But I know that my phone did not used to do this, and I know that it only does this because I change ROM very frequently.

I read somewhere that there was some method people could do, to reset the stats. I can't really remember or find it, but it involved things like wiping stats > charging down > charging up etc etc.
 
Wiping stats is in recovery. The charging to 100%, turning off then charging until green, turn on, turn off, charge to green method may help in some cases but ultimately its not healthy to do that. Plus since your phone is acting as by design, I don't see what the problem is
 
williamj1 said:
That is true.

But I know that my phone did not used to do this, and I know that it only does this because I change ROM very frequently.
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im with dan on this thats its perfectly normal. Hell both my desire an my other half's wildfire both shutdown between 10% & 15%
 
Mine's always done this. Daft thing is that if you plug it in and then switch back on the icon says 0%
 
When I first got my Desire 15 months ago, it used to shut down at around 2%, it recently started to shut down at 15%. After a good 7 hours on the charger with the phone off I did a battery pull and it now shuts down at 5%, which I find better. My brand new Sensation shuts down at 2%.

Cheers
 
SUroot said:
Wiping stats is in recovery. The charging to 100%, turning off then charging until green, turn on, turn off, charge to green method may help in some cases but ultimately its not healthy to do that. Plus since your phone is acting as by design, I don't see what the problem is
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hmm.. I thought it was charge till full then turn off plug in charger again (usually charges more) then wipe battery stats....
 
I have the same problem. My phone used to shut down at around 3-4% charge but it shuts down at around 12% now (it varies). It may be that the official Desire ROM I had just displayed a different % and the battery is actually acting the same... but having it shut down when displaying 12% or something is annoying as it's more difficult to judge how much battery I have left!
 
matttye said:
I have the same problem. My phone used to shut down at around 3-4% charge but it shuts down at around 12% now (it varies). It may be that the official Desire ROM I had just displayed a different % and the battery is actually acting the same... but having it shut down when displaying 12% or something is annoying as it's more difficult to judge how much battery I have left!
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Yes, that is exactly why I enquired. I agree with you SuRoot that it isn't a problem as such, and is a perfectly natural thing to occur. It's just frustrating, as ultimately I have lost a lot of power. And I would rather my battery % was accurate. I was merely wondering if there was a solution.... .
 
I dont think its natural for a phone to have to shut down when displaying 10-15% battery, In my oppinion thats just wrong and complete overkill of protecting the battery, and as already pointed out it makes it difficult to judge how long you have before your phone turns off. I understand about it not ment to completely discharge, but 2-5% (which my desire shut down at when it was new) would surfice for this.

Cheers
 
master_yoda said:
I dont think its natural for a phone to have to shut down when displaying 10-15% battery, In my oppinion thats just wrong and complete overkill of protecting the battery, and as already pointed out it makes it difficult to judge how long you have before your phone turns off. I understand about it not ment to completely discharge, but 2-5% (which my desire shut down at when it was new) would surfice for this.

Cheers
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Are you a battery chemist?

I'll happily admit I do not know if it is overkill or not, but are you in a position to make claims on what should be sufficient? Can the claims be substantiated?
 
SUroot said:
Are you a battery chemist?

I'll happily admit I do not know if it is overkill or not, but are you in a position to make claims on what should be sufficient? Can the claims be substantiated?
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Without getting confrontational, I do think he has a point. Regardless of whether it is normal or to be expected by changing ROM lots, I do not think it is an unreasonable demand to expect my phone to display the correct battery % ?

I don't know, perhaps I'm wrong about all this. But I do not think that is unreasonable from a
 
It is the correct battery percentage. When your battery says 90% it has used 10% from being full (100%). When it says 50%, it has used 50% from being full.

But I see the point that you want 15% to show as 0%, but then is that correct? Its open to debate. When its at 15% it has 15% charge, its just you cant use it. Its reserved for keeping the battery working.

Anyway, let6 us know how you get on with that thingy you're doing.
 
I wanna throw my 2p in here....(doesn't have the same ring as 2 cents...oh well lol)

battery calibration was mentioned earlier...the whole charge to full, turn off, charge etc etc...but don't most ROM's now have a calibration inbuilt? I mean I know leedroid from version 2.3c had its own calibration script inbuilt into it so it didn't require you to do the whole thing yourself.
 
SUroot said:
It is the correct battery percentage. When your battery says 90% it has used 10% from being full (100%). When it says 50%, it has used 50% from being full.

But I see the point that you want 15% to show as 0%, but then is that correct? Its open to debate. When its at 15% it has 15% charge, its just you cant use it. Its reserved for keeping the battery working.

Anyway, let6 us know how you get on with that thingy you're doing.
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I see your point. But if its simply that it has 15% left, just that it now reserves that for other purposes why does it feel now it needs so much, compared to the previous <5%.

deanshep85 said:
I wanna throw my 2p in here....(doesn't have the same ring as 2 cents...oh well lol)

battery calibration was mentioned earlier...the whole charge to full, turn off, charge etc etc...but don't most ROM's now have a calibration inbuilt? I mean I know leedroid from version 2.3c had its own calibration script inbuilt into it so it didn't require you to do the whole thing yourself.
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Very interesting. But I am now very confused. When I posted this originally, I was running Leedroids port of the DHD sense 2.1/3 ROM and I had the shutting down at 15% with that ROM. I am now using MIUI though, so I really don't know if I will have the same issue with this ROM. I've had the issue for a few months though on many ROMS, so I don't think there is calibration scripts built in, or if there is, they don't appear to be working for me :P
 
SUroot said:
Are you a battery chemist?

I'll happily admit I do not know if it is overkill or not, but are you in a position to make claims on what should be sufficient? Can the claims be substantiated?
Click to expand...


I'm no battery chemist, however taking into account that my Desire shut down at 2-5% battery left for at least the first 6 months or so I had it (with no decline in bettery performance) and that Ive never had any other phone, laptop or device in the 39 years Ive been alive with a battery that needs to shut down with 15% left in reserve to prevent damage I think my oppinion/post is a fair point.

Smile :)
 
williamj1 said:
I see your point. But if its simply that it has 15% left, just that it now reserves that for other purposes why does it feel now it needs so much, compared to the previous <5%.
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Exactly, agree with that 100%

And as already posted above my 1 week old HTC sensation seems to only need 2% in reserve before it decides to shut down (as the Desire did when it was new) .. so why all the 15% bo****ks now?


Cheers
 
this is some very interesting post and i believe half of us have this problem turning the power off too early and i would gladly like to hear some solution if someone succeded

as i searched through internet about this problem only calibration was mentioned and there are a couple of ways to do this (3 i think)

i suffered from the same problem so i tried one of the way today if it will work but i doubt it

anyway i want to ask is it safe to delete the batery stats after every flashing of new rom ?
when i flash new rom i delete everything (data/factory , cache , baterry stats and dalvik cache)

p.s when talking about baterry does anyone knows or had one extended baterry which says 3500mah which is around 10 dolars on ebay ?
 
master_yoda said:
I'm no battery chemist, however taking into account that my Desire shut down at 2-5% battery left for at least the first 6 months or so I had it (with no decline in bettery performance) and that Ive never had any other phone, laptop or device in the 39 years Ive been alive with a battery that needs to shut down with 15% left in reserve to prevent damage I think my oppinion/post is a fair point.

Smile :)
Click to expand...

:)
 
master_yoda said:
I dont think its natural for a phone to have to shut down when displaying 10-15% battery, In my oppinion thats just wrong and complete overkill of protecting the battery, and as already pointed out it makes it difficult to judge how long you have before your phone turns off. I understand about it not ment to completely discharge, but 2-5% (which my desire shut down at when it was new) would surfice for this.

Cheers
Click to expand...

Agreed, Im surprised some people are calling it 'normal' tbh. Never had a phone that does this before the Desire. Why don't they just recalculate the battery stats so it runs from 100% down to 0% (where the 0% is actually the same amount of power as the present 15%). Essentially when you have a fully charged phone, you only have 85% of your battery, rather than 100% which isn't great when the battery's not all that anyway.
 
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