A while back there was a thread about supposedly calibrating X10's battery by charging it to 100%, turning it off, taking the battery out and inserting the charger chord, and then putting the battery back. This made the battery percentage drop down to 88% and when repeating this procedure a couple of times it would rise back to 100%, thus supposedly calibrating the battery. This worked to some and to others not. Now that we have xRecovery, I thought I'd try this in conjuction with the battery stats wipe option and whaddayaknow, I've got better battery life now. Now I can go through a whole day with heavy usage and still have some battery left for the phone to survive through night with data and syncing on. So I thought I'd share this with you guys to try out and report too.
ROOT IS REQUIRED!
STEPS:
1. Download and install xRecovery from here.
2. Charge your phone to 100%
3. Turn off the phone and boot into recovery
4. In recovery, go to Advanced options --> Wipe Battery Stats --> Yes
5. Take the battery off
6. Insert the charger chord
7. Put the battery back and wait for the phone to boot
8. Once the phone boots up, you will notice that the battery percentage is around 88% instead of 100%
9. Charge the phone back to 100%
10. Repeat 4-5 times, seems to be the sweet spot
11. Enjoy your hopefully better battery life and report!
REMEMBER THAT I'M NOT RESPONSIBLE IF YOUR PHONE BLOWS UP ETC. AFTER THIS!
Do i need to repeat all from 1 to 10 until i get 100? And do i need to do this 1 Time or do i need to do this the next 2-3 Days too?
Wolfbreak said:
Do i need to repeat all from 1 to 10 until i get 100? And do i need to do this 1 Time or do i need to do this the next 2-3 Days too?
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Click to collapse
Repeat from step 2 onwards till step 9. I believe you don't have to do it more than two or three times to get the desired effect, that's why I'd like to have you guys to test it out too to confirm.
Been through the cycle 5 times, still showing 87% at reboot.
Just for the record, I have the 435 firmware.
Sent from my X10i
Did you recharge after reboot?
Lord Takyon said:
Been through the cycle 5 times, still showing 87% at reboot.
Just for the record, I have the 435 firmware.
Sent from my X10i
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Click to collapse
Sent from my X10i using XDA App
teddymild said:
Did you recharge after reboot?
Sent from my X10i using XDA App
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Yes my friend, followed to the letter.
I have noticed one thing, my battery is behaving a bit strange. I used it earlier and it depleted from 100 to 93%, it then went back in my pocket for an hour or so and when I next used it it said 98% charge.
I ran it down to 83% and then put it back to sleep for 30 minutes, checked it again and it said 94%.
That is certainly strange... Hasn't happened to me yet, and I've been monitoring my battery for nearly a week now.
It certainly seems to have more juice in though. Given it a bit of a thrashing this evening and I would usually be down to around 50% our so, it's currently at 75%.
I will monitor for a day or so to see if it is just placebo or not.
Sent from my X10i
Lord Takyon said:
Yes my friend, followed to the letter.
I have noticed one thing, my battery is behaving a bit strange. I used it earlier and it depleted from 100 to 93%, it then went back in my pocket for an hour or so and when I next used it it said 98% charge.
I ran it down to 83% and then put it back to sleep for 30 minutes, checked it again and it said 94%.
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Click to collapse
Same happened to me overnight. Went up 8%!
Further, I've now done this process 6 times meaning my battery is effectively 160% of what it was???!!!
Have we got any hardware experts who can pass a view on whether this a bad thing to do? Overcharging a car battery can be bad for example.
i've done it 7 times and still boots at 88% battery.
lets see if it did something in the next day.. =P
I've done this and on the first try, it booted with 88%. I recharged it and on the next boot it came with 100%.
Let's see whether there is any real improvement
Thanks anyway for the guide.
Lord Takyon said:
Been through the cycle 5 times, still showing 87% at reboot.
Just for the record, I have the 435 firmware.
Sent from my X10i
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Click to collapse
it happened in the same way with me.
I have 504 firmware, x10a.
Cant we use the battery information menu? There you can see the battery voltage. The maximum is 4.2V.
Forget the "Wipe Battery Stats".
If you do the steps, except the 1, 3 and 4, the result described in the "8" step will happen.
in other words:
1.Battery is 100%
2. Take the battery off
3. Insert the charger chord
4. Put the battery back and wait for the phone to boot
5. Once the phone boots up, you will notice that the battery percentage is 88% instead of 100%.
In an infinite way.
I followed the steps from the first post and the first time I reboot the phone went to 94%. I then charged to 100% and ran the steps again and this time I reboot to get 77%. I then ran the steps one more time and after reboot i got 100%. I then left the phone on standby and did not use it for 12 hrs and it was still at 87% battery. This is a definite improvement over before even on just standby I was lucky to get 24 hrs out of it and now it seems it can last about 80+ hrs on standby.
Im on .24 firmware with bluesparks rom.
first time i did this it booted at 96% then the second time 86% nothing strange as of yet
olavopb said:
Forget the "Wipe Battery Stats".
If you do the steps, except the 1, 3 and 4, the result described in the "8" step will happen.
in other words:
1.Battery is 100%
2. Take the battery off
3. Insert the charger chord
4. Put the battery back and wait for the phone to boot
5. Once the phone boots up, you will notice that the battery percentage is 88% instead of 100%.
In an infinite way.
Click to expand...
Click to collapse
The point is to wipe your phones memory of the battery thus learning your phone a new pattern or behavior, so i belive every step from original guide is nececcary.
Sent from my X10i using XDA App
Tjotte said:
The point is to wipe your phones memory of the battery thus learning your phone a new pattern or behavior, so i belive every step from original guide is nececcary.
Sent from my X10i using XDA App
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Click to collapse
Yes. I arrived the this conclusion, after 5 attempts from original guide.
I told this in the post 12.
I've done this 5 cicles. It keeps showing 88% but battery life improved a lot. I had to plug every night but now it's my second day without recharging.
Thanks a lot! !!!
Sent from my X10i using XDA App
I've done this 3 or 4 times now and in 12 hours I've gone from 100 to 87% including a few calls and a small bit of Sat Nav. I also have Ultimate juice. Still very good and would get over 3 days with this performance.
Still 88% all the time when rebooting and wiping the stats though.
Hi all,
I once asked why the battery life on my Hero was kinda bad (< 1 day with a full charge), and I did as was described in this post. I downloaded the Battery Calibration App, charged to 100% and pressed "calibrate battery", let it drain the next day , waited for phone to self-shutdown. Then I plugged it into the wall-charger. After a few minutes I switched the phone on again (while still connected to the charger), and immediately after it booted it said it had a battery percentage of 40%. Let it charge to 100%, and immediately when I started using the phone, the percents started to wear down again very quickly (>10% in an hour). Next day I booted into recovery and wiped cache and dalvik cache and battery stats, but battery life still goes down pretty fast. Did something go wrong here? If so, what should I do to prolong the battery life?
When I go to settings -> about phone -> battery, the 2 things I see at the top most of the times are visualizing/screen or wifi. A typical day for phone use for me looks like playing a little game, browsing, using tweetdeck etc at times when I'm bored or texting, so I use it a fair amount of time each day. I just installed JuiceDefender, gonna see that that'll bring me.
I run Elelinux 7.1.0 latest version.
greets,
Danny
i have not used the app yet, but i advice you unistall the app and using root explorer go to the /data/system/ and delete the batterystats.bin file and restart the phone and let it drain down completely and recharge and you should be fine
New gTablet, just use only 1 day, the charging allway in 96%!!! never go upto 100%, is this normal?
Pls: i see 97% about 5 minute ago, but now back to 96%,,,,,,
thanks
Yes, it's normal, everybody has inaccurate battery readings on Gtablets.
To try to fix it, you can drain the battery all the way down, then turn it on a couple times ot make sure that it's completely drained. Then, plug in the charger, turn it on in recovery mode (assuming that you have CWM installed) then wipe the battery stats. Reboot, and charge it all the way back up. it may charge to 100%.
Mine has a different issue, it will charge to 100%, then it will stay there for an extended period of time. 3 hours later, it might still be on 100%, but I know that it's not. If I let it drain down, it will actually turn itself off around 13% - 15%, so my battery calibration is off by that much in the positive. The first time I wiped stats, it fixed it, but it's slowly crawling back up again.
thank . TJEvans, ithink i need to return back. so many problem with my gtablet.
Under the battery usage screen the information displayed isn't correct. Right now it says I been off battery for 30 minutes and it has actually been an hour. It was doing the same thing yesterday so I wiped the battery stats in CWM but things are still messed up. Any suggestions?
I'm running Unnamed 1.1 with Entropy's kernel.
Sent from my SAMSUNG-SGH-I777 using xda premium
you must've powered off/powered on the phone in that time. sometimes when i turn off my phone, even if i don't plug it back into the charger, my battery time will reset itself to zero. same thing can happen when you boot into recovery, i.e., to wipe battery stats (even though that does not do anything on our phone).
I never rebooted. That is what was so strange. The other night there was nearly an 8 hour discrepancy. It took about 3 hours for the battery to show it had been running for an hour. The screen on time was also wrong, showing the screen had been on for 1/4 of the time it had actually been on.
If you wipe battery stats it does reset the battery use screen to zero when the phone reboots. It might not be useful for much, but with the timers reset to zero I could at least see if everything matched.
Bloody hell, my phone has been rebooting itself. I'm pretty sure that is why the stats are all messed up.
Sent from my SAMSUNG-SGH-I777 using xda premium
So when you go into setting and go to battery where it shows how long the phone has been up and what apps use how much battery. Shouldn't that get cleared if you take out the battery? Right now it says my phone has been on battery for 6 hours and 47 mins. I take my battery out for several mins and then put it back and go to settings it shows the phone running for the same exact time. I did this several times and each time I turn the phone back on it starts the timer at 6 hours 44 min I thought this should get cleared since the battery was out?
Sent from my SM-G900T using XDA Free mobile app
When you take out your battery, the phone shuts off so a turned off phone can't read a detached battery. Therefore, it assumes you just powered down your device and it'll resume your battery life's stats when you boot your phone up.
Hope that helps!