Does anyone have a link for the thread that discussed the correct way to wipe battery stats when upgrading to a new Rom? I remember it went something like drain dead, charge to full, drain dead again then charge to full and wipe stats. I can't remember the complete process. Thanks for the help.
Sent from my PC36100 using XDA App
I've seen a couple different threads on that here, one saying discharge fully then charge while powered off, and the other saying to do a full charge "conditioning cycle". I did the latter and it seems to have made a difference.
Here's what I did:
Charge the phone fully with it powered on
When fully charged, disconnect cable
After green LED goes off, power the phone off
When phone is fully powered off, reconnect cable, amber charging light should be on
When LED goes green, disconnect cable
Repeat previous two steps 10 times
After 10th cycle, boot into recovery and wipe battery stats.
I am using Amon Ra recovery which has the wipe battery stats option under the Wipe option. I never did this when I had Clockwork recovery installed, so I don't know if the option is in the same place.
Being an electrical engineer, I find this business of battery conditioning interesting, along with the Ni-Cd "memory" vs. Li-Ion "no memory" issue. If anyone has found a decent physics-based explanation as to why these things do or do not have any basis in fact, I'd appreciate a link. Yes, I'm too lazy to Google it at the moment.
Hmm, I may have to look into this again. I charged my phone all night (powered off) and unplugged it this morning. I did nothing with it this morning but turn it on and look at it, then put it in standby (quick press of power button). It lost 16% of charge in less than 2 hours!
I'm running BS1.2 with the Baked1 (low voltage/best battery) kernel.
Damn, just installed System Panel and found that my CPU is at 100% constantly!
I'm trying this now. The longest I've pushed my battery was 22 hours... and that was with 39 minutes of screen on time, lol. In standby almost the entire 22 hours....
Ok, I believe my issue was related to a camcorder problem, my CPU usage has dropped back to normal levels after fixing that separate problem. After my battery recharges fully I will see what happens with the charge.
the other methods to do "calibrate your battery" (which isnt really calibrating the battery but the battery stats of the phone so it can accuratly judge when it stops and starts charging)
1) charge the phone to full
2) unplug and use phone till it shuts off from no battery (do not plug in until it shuts off)
3) charge phone to full again with out unplugging till 100% (check under about phone > battery it shoudl say full charge there)
this should reset the battery stats.
the last method is one from HTC
1)Charge the phone for 8 hours uninterupted with power on
2) turn off the phone and charge for an additional hour
3) turn ont he phone unplug it and let it sit for 2 minutes then plug it in for an additional hour.
all 3 methods listed should help. I personally dont like the x10 method because it has the potential and basically over charges the battery to make sure it is acctually at a full charge. It is much faster then the other 2 methods though so to each there own.
Dont waste your time on...
plug/unplug 10 times. It really doesn't recal the battery.
the unplug/plug 10 times.
1. Phone on...charge until green light comes on. Immediately unplug and turn phone off.
2. Plug phone back in until green light comes on again. Immediately boot into Recovery and wipe battery stats.
3. Use the phone on battery until dies.
4. recharge phone to 100%
You are good to go!
If I tether during the day (5+ hours) a lot, is it bad on my battery? Isn't that like a constant charge or does once the LED turn green it stops trying to charge?
Thanks.
fldash said:
If I tether during the day (5+ hours) a lot, is it bad on my battery? Isn't that like a constant charge or does once the LED turn green it stops trying to charge?
Thanks.
Click to expand...
Click to collapse
the evo doesnt do a trickle charge so when the light turns green it stops, this is why you will almost always drop 1-5% battery rather quickly.
Are you sure? My light has been green for a while, and my phone battery status says 'Full'.
fldash said:
Are you sure? My light has been green for a while, and my phone battery status says 'Full'.
Click to expand...
Click to collapse
There's a lot of confusion over how the battery / charging circuit works and how it reports. My advice is to just charge until it's green and full, then unplug it. If you leave it plugged in all night, unplug it for 10 mins in the morning, then plug it back in to top off.
That doesn't really help me SilverZero, my question is only if leaving it tethered (which means connected to USB) is bad for my battery.
Well on mine i would check it every once in awhile and i would see that once it get downs to under 90% that it would charge again till it recognized that it was full again. So based on that i dont think you should have to worry about it. It seems to only draw the charge when needed. I also leave mine plugged in alot when im home so its good to go when i leave and havent noticed a loss of battery life at all.
You guys don't want the charger to trickle charge. Li-Ion does not accept overcharge, even 0.01C (15 mA on the stock Evo battery) will cause it to vent and probably combust.
So does "calibrating the battery" calibrate the phone or the actual battery?
I ask because I have 3 spare batteries, wondering if I have to do this for each of them??? They are all standard size, one of them OEM
So I was messing around on my phone this morning when all of a sudden the screen flickered and went out. Last time I remembered seeing the battery charge it was at about 43% so I didn't think it was a dead battery. I tried to turn the screen back on, it would give the short vibration but that's it. I tried many things, battery pulls, boot to d/l mode, boot to recovery, boot to fastboot, plugging in the charger and tried all that too, nothing worked. At one point when I plugged in the charger the battery icon came on and it was empty...let sit on the charger for a few and tried it again. Nothing. Then I attempted to put it in d/l mode and it started to boot up, got through to my homescreen and again, the battery was fully drained so it went out again. I'm running CWM v6.0.1.2 and thought I was screwed since it's widely known that there is/was a CWM bug that wouldn't allow the battery to charge in the phone if it was drained to 0....luckily after about 20min on the charger it was at about 15% and all was well.
Not sure if i'm the last person to find out but just wanted to share with you guys that the CWM bug that prevented the battery from charging in the phone if it was completely dead, is no longer. First thing I did after charging it up fully was calibrated the battery, snake oil or not, and it's now been 3.5hrs and i'm at 98% so it seems like it's working since I was losing at least 1% an hour before.
Okay, so my HTC One X wont charge to full, no matter what. Heres what I've tried so far...
- Wiped Battery Stats from recovery, then tried charging.
- Turned off the phone and left on wall charge for over 6 hours but still was less then 10% charged, then wiped the battery stats from recovery, and it gained 40% charge.
- When I wipe battery stats, phone does gains about 20% to 30% charge, but then starts to drain even when on charge saying "Your phone is using more power then supplied, close apps or turn off the phone."
- Once calibrated it when the charge was half, that was the only time it showed me 100% charged, but then again same problem.
Phone is rooted and running JB stock.
Any help would be appreciated....
batterystats.bin has absolutely zilch to do with this. It only logs things like 'x app ran for y ms' and does not affect the battery charge shown in any way.
Anyway, did you try charging with a different charger? Does charging from your computer change anything?
Yes, tried charging using my laptop, but still the same.
Hello,
I am running CM13 on my S4 mini. Everything works almost flawlessly. Except one recent thing, which doesn't let me sleep at night.
Recently i purchased a battery replacement for my device. The stock battery's capacity was 1900 mAh, which was not meeting my personal requirements. I decided to purchase an extended battery pack with 3800 mAh capacity, (signed as a replacement battery for this particular model) with a special casing to fit the new size. That's where it gets interesting.
First thing i did, i put the new battery inside and switched the device on. The percentage was about 24%, so i plugged in my AC charger (the same that came with the mobile), and left it alone to charge all the way up to 100%. Everything went ok, no extensive heat, just stable charging.
Afterwards i unplugged my phone from the external power supply, and I went outside. The battery dropped to 0% after a few hours. I calculated the power usage and compared with the battery's capacity. They didn't match at all. While the device was off, i plugged in my DC car charger. And as soon as the battery indicator showed up, it said 44%. I unplugged the charger and booted the system. Now the system power indicator also showed 44%, even though it was 0% 2 minutes before.
So i came to a conclusion - the OS is doing something wrong. Question is - what? I started troubleshooting. I checked the system and device status. Everything normal, except one thing - the phone still shows that it's running on a 1900 mAh battery. I wiped cache and dalvik cache partitions. Problem didn't go away. I deleted the batterystats file, even though i know it doesn't matter. The problem still persisted.
But the only thing that showed proper values, was the indicator running while charging without the OS running. So i reversed the situation. I let it discharge to 0% in the system and made sure it's 0% before system boot also. Then i let it charge with the system off. It reached 100%. I unplugged it and booted the android. It showed 66%. I repeated those steps until both the pre-boot and post-boot indicators showed equal values. But unfortunately it didn't fix the issue.
Can anybody help me find some kind of a solution? There has to be a way to get it working, i just don't know where to look further.
Thank you in advance for your advice.
Recently, I have replaced the battery and I have tried to completely to drain the battery and charge the phone offline up to 100% to recalibrate it, but although the offline charging logo shows the battery at 100% once I turn the phone on the battery icon shows it at 87% (and in twrp recovery as well). Again, this happens every time and this is my fourth attempt to recalibrate the battery without any success so far. I can charge it to 100% online but it looks like the phone doesn't like to hold it at 100% and quickly goes to 99% in a minute which is strange.
Another odd thing I noticed is that the battery starts to charge offline at 1% instead of 0% despite being completely drained and the phone unable to be turned on.
I also performed a total firmware reset using Odin but to no avail. Now suspicious if it's a motherboard or vendor issue. I had these issues even before the battery replacement and reflashing a stock firmware.
I'm running ArrowOS 11 with the latest bootloader (SM-960F - DBT)