Database Info

Battery over night?

I'm curious I recalibrated my battery to last longer I usually lost around 7-10 percent over night. Now after calibration I only lost 3% and this is what my consumtion was and was curious is this normal or good. I'm getting 43% cell standby, 40 phone idle, 15% display and 2% OS. I was going to post a pic but is not letting me right now.
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With my stock rom, I usually use about 3% over-night when the phone is shut-off.
So, either the stock batteries suck, or "off" doesn't really mean "off." I'm assuming the latter, since we have to pull the darn battery to get a true reset.

3% overnight sounds reasonable. Same here.
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zuriken said:
With my stock rom, I usually use about 3% over-night when the phone is shut-off.
So, either the stock batteries suck, or "off" doesn't really mean "off." I'm assuming the latter, since we have to pull the darn battery to get a true reset.
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Maybe you have fast boot on. Or it sucks up a lot of juice just turning it on
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codyperez86 said:
Maybe you have fast boot on....
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Sure do (enabled by default). I'll switch it off tonight and see if the percentage changes in the morning.

so is fast boot something we want on or off?

I look at fast boot as hiberateing. Take that off and I believe your phone will actually shut down all the way. Fast boot is fast boot. After shutting it off and turning it back on and starts up quicker. Sounds like something that would suck a little bit of battery life over night.
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With fastboot disabled and the phone shut off, you should see 0% to maybe 1% battery drain overnight.

henrybravo said:
With fastboot disabled and the phone shut off, you should see 0% to maybe 1% battery drain overnight.
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Yeah I think its from powering down and back up that's it.
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To recalibrate it I just powered up to 100% powerdown, unplug chord reboot into recovery go to advance and go to wipe battery bin. Reboot amd you should have a more accurate battery %. You should 4.2V at 100%
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3% is more than reasonable.
I lose like 1% per ~2 hours standby with active 3G data connection, and gmails pushing emails.

Battery not charging.

Note: this is only after I flashed my phone to a new from!!!
After flashing my phone to a new rom, I noticed something strange. I'll charge my phone for hours but my battery stays low. For example I set my phone to charge last night about 2 am at 10%. I woke up at 8:30 am and it displayed 29%! Yet under my battery calibration app it say 29% @ 3823mv. If fully charged is 4200mv, then 29% should be 1218mv. I've already calibrated the battery using the app and have let it drain about two times. Any suggestions?
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Which rom?

My battery is weird

My battery has been acting funny lately. Some nights I go to bed with the battery at 100% and when I wake up it's still at 100%. Other nights it loses 10-15% (in about 9 hours). I don't have anything running in the background that I'm aware of that would cause such a discrepancy. A couple nights ago the battery lost 10-12% overnight with the phone turned off! Still the phone was apparently awake all night. How is that possible?
I'm too lazy right now to post a screenshot since xda only accepts urls.

The same here after flashing a new custom rom.
After turning on the phone and making this screenshot percentage immediately went down for 10 to 15 %.
You can check things like that pretty good with apps like Battery Monitor Widget.

Did both of you try to recalibrate the battery?

Do a full cycle charge to 100% use it till 10% then wipe battery stats and charge phone to 100 again
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k1llacanon said:
Do a full cycle charge to 100% use it till 10% then wipe battery stats and charge phone to 100 again
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Why would you only go down to 10? Might as well drain the battery completely. It's not going to damage anything unless you let it sit around dead for weeks, possibly even months.

It's never good to completely drain a lion battery
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k1llacanon said:
It's never good to completely drain a lion battery
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Actually, for a proper cell calibration, it is best to drain the battery completely. Many agree and I have never heard a dev say that draining it dead hurts the battery. It is essential for each cell to be empty in order to properly and fully charge a li-ion battery (without this, % figures will be non-calibrated over time). Just like it is of good practice to let the device charge and extra hour or so once the indicator light turns green (to ensure 100% after trickle mode).

Rule 1: Battery calibration does absolutely nothing. Deleting battery stats will never, ever do a single thing to help your phone's battery calibration.
Rule 2: Standby drain is almost always because of partial wakelock or kernel wakelock. Install Betterbatterystats to figure out what the issue is.
Rule 3: If your phone is in a good reception area and still experiences heavy standby drain, charge the phone until it reaches max voltage (4.2 or 4.3), then use it until it shuts off, then go to hboot until it shuts off, then charge to full again, preferably with the phone off. Wait about an hour after you first see the green light to turn it on.
After that, enjoy. If you still have issues, I would suggest backing up everything and attempting an ruu flash with the battery at 100%.

I failed to mention it, but I haven't rooted or installed a custom rom.
I'll try better battery stats to see what I can find out with that.

Battery issue on 4.3 roms

I seem to have an issue with the battery level on 4.3 roms. The battery will suddenly go to 0%, forcing the phone to shut off. When I turn the phone back on, the battery is at a low %, somewhere close to 0%. Then the battery will slowly increase, as if it is calibrating to its real level. I have used most recently carbon and dirty unicorn. Was wondering if anybody else has had this problem?

My experience when that happened it was time for a new battery. When did this start? If you go to an older rom does this stop happening?
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Battery draining too fast on CM10.1

I have CM10.1 on my HTC One S. Everything was good until I thought my battery was miscalibrated of something. So I run the battery calibration app, let the battery drain, and then charged without interruption. Now battery won't last me more than 4 hours. Before it lasted about 6 - 8 hours, which was pretty acceptable, but 4 hours? I tried making a factory reset but didn't help. Battery drains about %20 or more per hour. What should I do? Does reflashing kernel will work? Or what? Please help..
PD. Charging also takes too long about 4 hours...
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Have you reflashed the ROM?