Hi, when I charge my phone to 100% (ie: when current widget shows 0 mA) then I restart my DHD, battery is suddenly at 95%.
My battery has been calibrated, and I always charge to 0mA. Is this normal?
Thank you
Next time you get to 0mA, unplug, reboot into recovery, plug back in, wait 5 mins or so, head to "advanced" and wipe batterystat.bin & reboot normally.
If that doesn't solve it, then your battery may have started to degrade.
solve
no such serious,it is normal.
Related
after some quick seach i found there a several methods to calibrate the battery with/without wiping battery stats
Method 1
(http://androidforums.com/hero-all-t...tery-life-performance-your-new-shiny-rom.html)
Battery
· Wipe your battery stats...
1. Allow the phone to discharge completely
2. Boot into recovery (hold Home and press On) plug the phone in if you don't have enough charge to get into recovery
3. Select Wipe > Wipe battery stats
4. Go back and Reboot
5. Leave the phone to do a complete charge (preferably over night)
Method 2
1. You will need to charge the phone to 100% (while the phone is off).
2. Leave charging cable plugged in.
3. Boot into recovery and wipe the battery stats (should be under Advanced).
4. Then boot into Android.
5. Then remove the charging cable.
Method 3
Calibrate your Battery
Calibrate the battery by completely draining it until the phone completely shuts itself off.
Turn the phone on again and let it shut itself off one more time.
Then charge your phone while it is off for over 8 hours.
This will fully charge the battery so that when the Android is turned on, it now sees the battery as full.
It is recommended to repeat this process at least one more time.
You should see a significant increase in your battery’s charge life.
Calibration of a battery can be done at any point and a maintenance calibration is recommended every month.
RECALIBRATION:
A recalibration is mostly needed, when dealing with different kernels (ROOT!). Most custom recovery images provide the option "battery stats wipe" under the menue "Wipe".
Here is how ya do it!
1. Enter Recovery Mode
2. do a full nandroid (or nandroid+ext) backup
3. Enter "Wipe"-Menue
4. do "Battery stats wipe"
5. reboot
Then you just take the steps from a bove to continue:
Method 4 (without wipe stat)
Hi *******, I understand your concern regarding battery life on your Nexus One device. The following steps should significantly extend the battery life on your phone. Please connect the phone to the charger with the phone powered on, and allow the phone to charge until the notification LED is green, indicating the device is fully charged. Disconnect the phone from the charger, and power it off. Reconnect the phone to the charger with the phone powered off, and allow the phone to charge until the notification LED is green. Disconnect the phone from the charger and power it on. Once the phone is powered completely on, power it off again and reconnect it to the charger until the notification LED is green. Disconnect the phone, power it on, and use it. You need to use this sequence only once. If the issue of battery life on our phone persists, I recommend you contact our HTC accessory department directly.
Tried this and there doesnt seem to have an significant effect.
and now i'm trying method 3 with wiping done first.am i doing it wrong?
None, I charge every night so not bothered so long as battery lasts the day
i tend to have the problem of removing the charger and the batt stats shows fully charge to 96 within 5 min..weird
actually i'm doing the 4th method right now
So my phone was at ~50% battery today when I did a reboot in AOKP M3. For whatever reason, it shut down, but didn't restart and the power button didn't turn the device on either. Easy enough solution, I just did a quick battery pull and restarted my GNexus. Now it's reading 100% charged at 3820mV when that should be at ~4200mV. Anyone know how to fix this? Plugging it in says it's charged. I know deleting the batterystats file won't actually do anything either. Should I just drain it and then charge it back up?
Ya, in this case I would delete the stats file anyway and run a benchmark in a loop until the GN switches itself off. Then recharge to 100% and do not interrupt the charging process. Guess there is not much else you can do to "recalibrate" the meter.
Recently my N7(2013) will shut itself down when the battery is low (about 10%) without any warnings, not even the "Shutting Down" dialog that it should show whenever it shuts downs (except for the usual low batt warning when it reaches 15%). After the shutdown, I cant even turn it back on not even the screen, nor the low batt (waiting for charger) screen is showing up until I plug it into a power source the it will show the charging screen and then I can turn it on again.
Its been a few times now, not sure its a hardware or software problem though. It shouldnt shut down when it still has 10% in it right?
Attached is the screenshot of the Battery Usage that shows the battery level shots down to 0% immediately from 10%.
Nexus 7 2013, Stock, Not Rooted
Are you using a battery monitoring program (battery doctor, better battery stats, etc)? If so, look in their settings, to see if they are set to shut down @ 10%...
BSnapp said:
Are you using a battery monitoring program (battery doctor, better battery stats, etc)? If so, look in their settings, to see if they are set to shut down @ 10%...
Click to expand...
Click to collapse
Nah I don't trust these apps so I don't use them. Moreover I'm did not root it so even if I use them they shouldnt have the permission to shut it down
Simple fix
It is an issue I have suffered with a couple of times and it appears we are not alone. It seems that the battery calibration is out of whack. When you charge your nexus up does it stay at 100% for quite a while? I
tried factory data resets amongst other things and nothing worked. I stumbled across a thread with a really simple fix. Turn your tablet off for 2 hours. Then turn it on again. Mine miraculously lost 26% of battery in that time (from 100% where it had been for 8 hours down to 74%). Then it started to use the battery at a normal rate. Working fine now.
My 12.2 keeps crashing and ending up in SDCard Mode.
It works just fine after charging. I can boot up for a day or two, the battery seems to discharge normally, then I will try to boot up and it goes straight to SDCard Mode. Last night I was using it, the battery at about 70% and it crashed. Black screen then tried to reboot and it goes into the SDCard Mode.
Once in this mode I can do nothing with it. No response and if I shut it down with the button it lights back up into the mode after a couple seconds. It will not charge.
At this point I either have to leave it until the battery goes completely dead, then it will charge, or remove the back and disconnect the battery, plug in the charger and when the battery shows on the screen I can reattach the battery and it will begin to charge.
With both of these options once it starts to charge it shows that the battery is completely drained and starting at 0%
Anybody know what's causing this?
Thanks,
Jim
Today with 80% on battery I started some updates off the Google Store and the tablet crashed to the SDCard mode shortly after.
Jim
I am running viper rom and i facing some illogical Battery percentage
Any idea how to calibrate it
I ve tried many apps from play store and no results
And i even tried the hard way by pressing the 3 buttons while the phone is off olso no luck
Any idea?
Calibrating the battery on Android devices
Method for rooted devices:
1. Discharge your phone fully until it turns itself off.
2. Turn it on and let it turn off again.
3. Plug your phone into a charger and, without turning it on, let it charge until the on-screen or LED indicator says 100 percent.
4. Unplug your charger.
5. Turn your phone on. It's likely that the battery indicator won't say 100 percent, so plug the charger back in (leave your phone on) and continue charging until it says 100 percent on the screen as well.
6. Unplug your phone and reboot. If it doesn't say 100 percent, plug the charger back in until it says 100 percent on screen.
7. You want to repeat this cycle until it says 100 percent (or as close as you think it's going to get) when you start it up without being plugged in.
8. Now, install the Battery Calibration app attached below and, before you launch it, make sure your battery is at 100 percent again, then reboot.
9. Immediately launch the app and recalibrate your battery stats.
10. Once you've calibrated your battery, discharge it all the way down to 0 percent and let your phone turn off again.
11. Fully charge the battery one more time without interruption while it's switched off, and the Android system's battery percentage will be reset.
Note that all the app does is wipe the accumulated data from the batterystats.bin file giving you a new clean slate to work with. This method is also called, "training the battery" and should be performed infrequently. Maybe once every four months or so.
References:
https://www.androidpit.com/how-to-calibrate-the-battery-on-your-android-device
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Aurelius99 said:
See if this will help you.....
https://www.androidpit.com/how-to-calibrate-the-battery-on-your-android-device
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Click to expand...
Click to collapse
I ll give it a try
I would also note that this would be good to do right before installing a battery monitor app like Gsam or BBS. :good:
comstockload said:
I would also note that this would be good to do right before installing a battery monitor app like Gsam or BBS. :good:
Click to expand...
Click to collapse
I haven't calibrated mine in a long time. Getting ready to do it right now.
How successful was this calibration?