Does anyone know what exactly what the "android system" mean in the breakdown of battery usage? Usually the majority of the battery usage falls under cell standby and as of lately the battery is draining fast! Even with the sbc kernels. Please help if you know anything about it
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I installed cm7 last night and the battery stats show phone idle and wifi using like 30-50% while display is low like 5-10‰ I'm using 26.04.03.30
Is this a bad radio??
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Don't pay attention to those stats. It's been discussed before; they are inaccurate. It has nothing to do with your radio
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I've been running it a while longer now and it seems to use next to no power in standby but goes down way fast in use. Any tips about cm7 and battery?
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oh geez, where to start...there's tons of info on prolonging your battery life. you're just gonna have to use the search button for that.
it's no secret that the biggest culprit, when it comes to battery drain, is the screen. personally, i've seen improvements on battery life when i turn the brightness setting down.
i've seen my battery last anywhere between 8 hours (very heavy use i.e. screen on pretty much all day) to 30 hours (very light use, few phone calls, few sms, light online surfing, i.e. screen hardly on). rather than what rom or radio you are using, i think how you use the phone has a bigger impact on battery drain.
also, if you want to prolong the life of your li-ion battery, avoid fully discharging it. li-ion batteries perform better (and longer in the long run) when you avoid full discharges.
I completely drained my battery from 100% until the phone shat off and then charged it to 100% again before calibrating the battery using the "battery monitor widget" app. After that, my battery seems to be draining even quickier than before. With the screen being at the top of the battery usage graph although my usage is the same as before.
Anyone else having that issue? I am rooted and running zedomax's kernel v2
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Sounds about right. Every time I've "calibrated" a battery this happens. Run it dead the first charge. Then give it a few days-to-a-week before making another judgement. So long as nothing happens to your battery stats and nothing extraordinary happens WRT charging/discharge you will then have (what I consider to be) a well calibrated battery. If you don't like the results, too bad. I consider them more accurate than the very rosy outlook you had before calibration.
Myself? I haven't been burned by the battery lying to me yet so I haven't bothered to calibrate. I only do that when I feel the meter is way off base...which is hard to tell since usage can vary so much from day to day. Only when it is glaringly obvious that something is awry do I do this...mostly 'cuz it takes so long to get things back to normal.
In summary, yeah...sounds about right. Don't panic and just use it normally if you want an accurate meter, whether you like the truth or not I think you'd prefer the truth.
miguelrodas said:
I completely drained my battery from 100% until the phone shat off and then charged it to 100% again before calibrating the battery using the "battery monitor widget" app. After that, my battery seems to be draining even quickier than before. With the screen being at the top of the battery usage graph although my usage is the same as before.
Anyone else having that issue? I am rooted and running zedomax's kernel v2
Sent from my SPH-D710 using XDA Premium App
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Your battery behavior sounds to be normal.
You should be getting about 1% battery drain per hour when screens is off.
You should be getting about 1% per 2-3 minutes of screen on time, depending on usage.
Evo4g and Evo3d were getting about 1% per 2 minutes of usage.
This phone isn't that much different.
When it dies after calibration, you should charge it to 100% without break.
Following calibration, batteries still take a little time to settle. Give it a week or two and you'll see its true discharging rates.
Also, I've never heard of that app. Use the Battery Calibration from Ne'ma.
Transmission sent from a Galaxy S II.
Pheno.menon said:
When it dies after calibration, you should charge it to 100% without break.
Following calibration, batteries still take a little time to settle. Give it a week or two and you'll see its true discharging rates.
Also, I've never heard of that app. Use the Battery Calibration from Ne'ma.
Transmission sent from a Galaxy S II.
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Battery Calibration by Ne'ma works well for me. The above posts sound right give the a few cycles to settle in.
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does anybody know if there is a battery calibration app for non rooted stock only phone?
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calibrating the battery on a modern smartphone is a myth.
Resetting the battery stats doesn't do anything - it only deletes a file that stores what application have been using the battery since it was last charged.
Draining the battery only drains the battery. There's no calibration meter or file or anything else. Neither the phone nor the battery benefit from this. In fact, draining the battery will actually shorten the lifespan of it.
Hi
I got a 6200mah extended battery
How do I calibrate the battery without rooting? Is there an app for calibration?
Or must I root in order to get accurate percentage reading for my battery?
Thanks
You don't need to calibrate lithium ion/polymer batteries.
Just whack it in, charge it up and go about your normal day
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The reading on the phone seems a bit off. It flatlines on usage for 2 hours at 3% seems phone not able to take accurate reading of battery true capacity in percentage
If the readings seem off, you can just charge to full and drain battery to about 1% then recharge. That is all calibrating really is. The concept of providing a low and high point
Those root apps that you see that "calibrate" the battery usually only wipe the phones battery stats which is placebo and has no effect on battery life. That file is essentially wiped everytime you charge to full and unplug.
Is this your first charge with it? If so just do a full charge cycle.
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From my personal experience and some googling i found out that a combination of juice defender and GSam battery monitor will drain your battery dramatically after some days/weeks (I have experienced it)
I was getting 5 hours+ on heavy usage but today these two apps sucked my battery off and my battery went from 70 to 40 in an hour or two.
After some internet surfing i found out this.
Please confirm
As a refference please check this link:
http://forum.vodafone.co.uk/t5/HTC-...down-to-7-100-8am-kernel-used-52/td-p/1349662
Sent from my HTC One X using xda premium
I am also getting high usage from the kernel on the stock rom. Sometimes, the battery goes down even faster than normal, but a reboot seems to bring it back to the usual consumption level.
I have also noticed my phone is awake quite a lot while on wifi, but I'm not sure if disabling it would improve anything.