Database Develop

first 25% of battery drops fast?

Ok so this is what i noticed has been happening with my phone...
I wake up in the morning and i unplug my phone from charger at 100% battery life...
after about 1-2 hours of no use (outside of occasional check of time) and no programs running i notice that 25% of life has diminished...
i have turned 3g off and done most of the kaiser tweak settings that help with battery life. for the rest of teh day i can use the phone and battery life runs normally but it seems the first 25 to 30% drops real fast without use
is everyone experiencing this? is it normal?
KP

The problem lies in your first sentence. "I wake up in the morning and unplug my battery." You are charging your battery too much thus killing it's battery life. I only charge my phone in the day while I'm at work. That way I can unhook it when it's fully charge. I would go on ebay and type in OEM battery Kaiser. You can pick one up for 15-30 dollars new.

From what I understand. Leaving your battery in the charger when it is fully charged should not damage the battery as long as its not there for an excessive amount of time but i might be wrong. Either way i have no way of charging the phone during the day as im on the go most of the time so this would mean even if i get a new battery it wont matter because it wile eventually do the same as i have only used this phone for about 3 or 4 months now. any other possibilities or solutions?
or should i just take it as it is and just buy a new battery maybe a bigger seido?

I thought Lithium ion batteries have overcharge protection. I charge mine overnight which I am sure a lot of others do also with no negative effects.

netboy said:
I thought Lithium ion batteries have overcharge protection. I charge mine overnight which I am sure a lot of others do also with no negative effects.
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I do... Maybe I shouldn't?

I would hope it has Overcharge Protection!!!
With NiCad Batteries if you overcharged them you would kill the life of the batteries.
And while all batteries do this LiIon are least tolerant. If you overcharge a LiIon battery, that is without Overcharge protection, the LiIon Battery with BURST INTO FLAMES! Thus the problem with the Sony Batteries that caused all those Laptop battery recalls.

gqstatus0685 said:
You are charging your battery too much thus killing it's battery life.
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Thats total BS with lithium batteries.
To the OP: Try running down your battery completely once, until the phone switches off by itself, then recharge fully. If you never do it and always recharge before the battery is empty the battery's power meter can lose its calibration over time and display weird things.
If it doesn't help, and you can notice a drop in overall life time you might need a new battery.

I have the exact same "problem" with my Tytn II.
Is slows down evenly though. (So the first 5 % of battery vanishes in minutes basically while the last 5 % can last for an hour, when it's half full % will last somehwere in between these two extremes).
Personally I've just interpreted this as poor measuring done by the hardware and/or software. (Ie I don't think the battery performs better the less full it gets as the meter in Windows would have me think)

kilrah said:
Thats total BS with lithium batteries.
To the OP: Try running down your battery completely once, until the phone switches off by itself, then recharge fully. If you never do it and always recharge before the battery is empty the battery's power meter can lose its calibration over time and display weird things.
If it doesn't help, and you can notice a drop in overall life time you might need a new battery.[/QUOTE
thanks ill try it out as soon as i get a chance...
kp
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may seem a daft point but after draining the battery, dont charge with the phone turned back on. gives a fuller charge cos its not being used and makes it quicker to charge, lol

duke0102 said:
may seem a daft point but after draining the battery, dont charge with the phone turned back on. gives a fuller charge cos its not being used and makes it quicker to charge, lol
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Hmm...I don't see how turning my phone off to charge would increase the charging rate dramatically. My phone in standby mode uses 1% every 2 hours.

depends highly on roms and especially on radios.
with a crappy rom, battery could drop as fast as 10% per hour.
with a decent rom, battery drops in standby mode at a rate about 2% per hour.

duke0102 said:
may seem a daft point but after draining the battery, dont charge with the phone turned back on. gives a fuller charge cos its not being used and makes it quicker to charge, lol
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If the phone is on but on standby that barely changes a thing. If it's on, with display illuminated then yes it might take you an extra 20 minutes to charge.. no big deal either.

*UPDATE*
ok so i drained my battery last night completely(turned on navizon, tt7, and skyfire) which took me about at most 2 hours.
Put it in for a charge
woke up at 9 and checked to see and it was 100%
I have push mail set to update every hour and i also run pocket sportscenter autoupdates which updates every 10 to 15 minutes
I used the phone for 5 minutes of calls
5 minutes of web surfing
a few text messages
and the occasional time check
at 6:30 pm battery life was at an amazing 90%
i was thrilled.
i continued to surf the web heavily from 730 to 8
a few more text messages
at 9 battery was at 67%
so i gotta believe that draining the battery helped recalibrate it...
i guess every 2 or 3 months i got to drain it out and give a full charge
thanks for the help guys
really appreciate it

Phone shutdowns itself when battery hits the 7% mark

I'm trying to nail down if this is normal behavior or not my phone always shutdowns itself when the battery level goes below 7%, no matter what.
then I turn it on it boots and shows 0% of battery left then it shutdown again, next time I try it's totally dead.
Tried with a battery calibration improved the overall battery life but that mark is still there.
Is that normal? I mean when I used to have a G1 it lasted until 1% or so.. 7% can be very well an extra hour of usage that I'm loosing.

emudojo said:
I'm trying to nail down if this is normal behavior or not my phone always shutdowns itself when the battery level goes below 7%, no matter what.
then I turn it on it boots and shows 0% of battery left then it shutdown again, next time I try it's totally dead.
Tried with a battery calibration improved the overall battery life but that mark is still there.
Is that normal? I mean when I used to have a G1 it lasted until 1% or so.. 7% can be very well an extra hour of usage that I'm loosing.
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I've noticed the same thing. It'll be interesting to see if anyone has a solution.

7% of battery life is just a number. It could very well be inaccurate, and simply reporting 7% when you actually have 0%. When you reboot and it shows 0% just backs this idea up. You are not "losing" an hour of battery life, you simply never had it.
To check this, use spare parts to look at the voltage of your battery when it approaches 7%.
Also, this belongs in the QA section.

I'll give it a try, interesting is the fact that both Cyanogen RC3 and Battery Monitor are reporting the same thing.
Will keep an eye on the voltage, what should it say ? something near 0?

seriously?
AFAIK li-on battery never be below 5% or 7% why?
because if you get below of this the battery will be dead and will not work anymore. so thats normal.

zen kun said:
seriously?
AFAIK li-on battery never be below 5% or 7% why?
because if you get below of this the battery will be dead and will not work anymore. so thats normal.
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I've also read its normal but if its normal why isn't it calibrated to show 0% when its actually at 7%? My phone goes off at ~10%
btw there are so many battery threads lately.. http://forum.xda-developers.com/showthread.php?t=702167

Yeh, mine also goes off at around 10%.

it seems normal then , time to get myself a spare battery ... travel can be painful if no power outlet / usb port is near me

Yes its kinda normal. My phone has always shut down at 8% from day 1. I think its because of what we're talking about in the battery cal thread personally.

[Q] Battery Calibration - reboot?

I recently installed Serendipity and made sure the battery was at 100% while doing so (and deleted the battery file). I'm waiting for the battery to drain before I plug it in. Am i supposed to let it charge all the way again? Also, is it safe to reboot the phone while it is draining the first time? I want to install something using clockwork.
I'm being careful about this because cognition would report 14% battery life after 33 minutes of display usage and display eating up 96% of my battery....

killsto said:
I recently installed Serendipity and made sure the battery was at 100% while doing so (and deleted the battery file). I'm waiting for the battery to drain before I plug it in. Am i supposed to let it charge all the way again? Also, is it safe to reboot the phone while it is draining the first time? I want to install something using clockwork.
I'm being careful about this because cognition would report 14% battery life after 33 minutes of display usage and display eating up 96% of my battery....
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There's a complete thread on this, I suggest you look it up.
After you reset your battery stats, it is suggested to do a few full battery circle (use til dead, full charge, rince and repeat). You should be fine after 2-3 circles.
Note tho that it will not improve your battery life. All it does is a attempt to tell your phone what % your battery life is exactly.
For your fast drain, I don't think it has anything to do with your battery calibration or your ROM. It's most likely a app (or a few) that are draining alot of juice or that are running w/o realy being needed. (Check your running services.. make sure you know which one to stop and not to***)
Also using a app/widget like advanced task killer can help your battery life as it will stop every app running with a simple touch. I suggest doing it anything you're not using your phone.
One last thing, display eating 96% of your battery is normal.. it's not telling you it's using 96% of your battery. It's telling you that during the time your phone as been unplugged, your display use was your main action.. probably cause you didn't make many calls or anything else.. Display is just about everything you do with your phone so it will always have some high numbers like that.

BWolf56 said:
There's a complete thread on this, I suggest you look it up.
After you reset your battery stats, it is suggested to do a few full battery circle (use til dead, full charge, rince and repeat). You should be fine after 2-3 circles.
Note tho that it will not improve your battery life. All it does is a attempt to tell your phone what % your battery life is exactly.
For your fast drain, I don't think it has anything to do with your battery calibration or your ROM. It's most likely a app (or a few) that are draining alot of juice or that are running w/o realy being needed. (Check your running services.. make sure you know which one to stop and not to***)
Also using a app/widget like advanced task killer can help your battery life as it will stop every app running with a simple touch. I suggest doing it anything you're not using your phone.
One last thing, display eating 96% of your battery is normal.. it's not telling you it's using 96% of your battery. It's telling you that during the time your phone as been unplugged, your display use was your main action.. probably cause you didn't make many calls or anything else.. Display is just about everything you do with your phone so it will always have some high numbers like that.
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Yeah, I've seen the thread before but forgot about it. Thanks for reminding me. And my point about the display was that it was on for such a short amount of time, yet still killing my battery.
I am now down to 30% or so after 3 hours or more of display time after calibration & rom switch- and I was streaming music through WiFi and using Bluetooth headphones. So it it seems like it made a huge difference =D
Thanks

Optimux2X battery life with ICS

In threads in the Optimus2X development forum I often see posts that praise the battery life using new ROMs or basebands or RILs. The numbers always surprise me and make me jealous. I have read about some guy whose phone loses about 3% battery during the night, or some other guy who still had 75% battery left after 7h of 'normal' usage.
Today, I unplugged my phone from the charger at ten in the morning and 3 hours later, I had 80% battery left, with the phone only resting in my pocket in standby. Now, about 8 hours unplugged from the charger and less than normal use (15 min browsing, one GPS localization, two SMS sent) I am 25% battery.
I have disabled WiFi, decreased display brightness to the lowest value, always disable GPS & bluetooth unless I need it (which is very rare).
I am currently on owain's CM9 build 62, baseband 313 and RIL 218. I have also tried BB 725/RIL 725 (which caused big problems) and BB 420 / RIL 1120. Both did not give me a noticeable longer battery life.
Whats up with my phone or battery? How can I extend my battery life to the numbers said in the beginning?

battery
buy a bigger battery
i have a 3500mAH battery
more then 2 day on 1 charge
look on dealextreme

12 hours 30 mins, with 25% battery left
Over locked to 1.4ghz
Screen on 2 hrs
Calling 2 hrs
So yeah , I guess its pretty heavy use...
It also goes alright (;
sent from my wii remote

i would say something is definitely wrong with your phone, rom or kernel. i use my phone even to play, games like dead space and more, and my battery always lasts for 1 day at least, also oc'd to 1.4 ghz.

skylinegt77 said:
i would say something is definitely wrong with your phone, rom or kernel. i use my phone even to play, games like dead space and more, and my battery always lasts for 1 day at least, also oc'd to 1.4 ghz.
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I sense slight exaggeration there buddy (;
Jokesss
sent from my wii remote

I had the same prob, But I solved it,
now my phone survives a full day with normal usage.
Receiving/sending mails tweets facebook post G+ browsing the web etc.
try to drain your battery until your phone shuts down by itself
then fully recharge it after that unplug it and start it up again,
I hope it helps it did so for me.

Battery drops 70% in 1sec

Yesterday i installed the S'Perience ROM and it all went fine, smooth fast rom
Today after 4 hours my battery was at ~80% YAY!! I was a happy man with my new ROM super friendly battery usage.
But then a second later it was at ~10%
Anyone ever had this before, the battery is a new 1500mAh i'm using for a month now.
Normally it lasts 10-14 hours depending on my day.
Maybe i should post this on the S'Perience thread, but i can't post there cause i'm a noob with less then 10 posts.
I also can't attach a screenshot of my battery page because as stated above i'm a less then 10 posts noob.
But i think it's a pretty clear story.
Hope someone can't at least point me in a direction
Tnx in advance

I have that rom instaled and dont have that type of problems.
Try to discharge the phone and charge with him off. them install battery calibration and calibrate it.
Try to see whats runnig in background, most of time its the battery problem to much things running in background

Will try! tnx!
I have 2 apps running lol. Whatsapp and Facebook that's it. And whatever S'Perience is running.

I had latest S'Perience since the firts day with severel apps instaled and the battery do not drops likes yours.
Whatsapp its a big consumer of battery :S

I know whatsapp is a big consumer, but 70% in 1 sec .
Doing the callibration thing now, it charged to 102%
Then i unplugged, and it dropped 1% per second till 58%.
Now it's sitting at 58% for a while......
Gonna let it discharge fully now, and fully charge it rightafter.
Hopefullt tomorrow it'll be a bit better.
C.

battery probably isnt calibrated properly, make a full charge, when the phone says 100 percent, dont believe it, check by going to system/aboutphone/status and it will say full there then use battery calibrater and use all the battery then charge again

Most probably its becaude your using a different battery from most people. That's why.
Austin 3:16 says "I just whooped your ass". Sent from my Cooper running Gingerbread MIUI.