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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'm on my Evo today, playing a game (Air Strike). My battery is at 93% when I picked the phone up to play, and the phone is plugged in. Suddenly, with no warning what-so-ever, my phone shuts off. Of course a mini-freak out and many "wtf's" ensue. No warning, no signs, even the led went off. I pulled the battery, put it back, then plugged the phone in again. After that it gave me the blinking light indicating the battery was too low to turn on. After a few minutes charging she came back on and battery was at 5%.
How the hell does a battery go from 93% to 0% in less than 5 minutes, and give no warning at all?? Anybody else ever have this problem?
Wow I've have never heard or that happening before. Maybe a glitch in the battery stash? Did it take awhile to charge up to 100%? Can you reproduce the issue again?
Sent from my EVO (CM 6.1.1) using XDA App
I had this problem with my older phone once. The battery itself may have a problem or your phone is not getting charged properly.
Try These :
1) Try charging the phone overnite from the Wall charger (Not through USB of your computer)
2) If the above does not work, and you have access to another evo battery, then try using that.(try using a friends battery and charger for a day. ) (Ofcourse needless to say the charger and battery must be for Evoonly )
In my case, my phone started working fine again after getting my battery & charger replaced.
Probably shouldn't worry about it too much just yet. Could be something as simple as your battery meter was mis-calibrated. The meter itself is software so it can easily be wrong/off. If it continues you may have a bad battery.
Sounds to me like something is wrong. Did you just get the phone or have you had it?
Idk... The phone had been plugged in for most of the day (hadn't gone anywhere. Lazy day lol) And like I said, the led went completely out as well.
Haven't had the problem again, so we'll see I guess....
Mark_Hardware said:
Idk... The phone had been plugged in for most of the day (hadn't gone anywhere. Lazy day lol) And like I said, the led went completely out as well.
Haven't had the problem again, so we'll see I guess....
Click to expand...
Click to collapse
I've seen some posts about the Evo battery shutting off the charge when its being used. Were you using your Evo while it was charging?
If the battery doesn't seem to be giving you percentages that are accurate, you might want to recalibrate your battery.
Common misconceptions sticky (Evo Q&A) said:
Battery recalibration (Thanks to Cyanogen for this and to fachadick for bringing it to my attention).
If you're experiencing higher than normal battery drain, try the following:
1. Charge the phone to full battery; let it keep charging until the battery says it is fully charged. Do not just wait until the light is green, it isn't always fully charged, causing a lot of inaccuracies. (You can check by going to: Settings -> About Phone -> Status -> Battery Level = Full.)
2. Boot to recovery and wipe battery stats.
(To have the most accurate of battery stats, reboot the phone immediately after wiping the battery stats and wait for your ROM to boot completely to the desktop. Once your entire boot is done and you have full access to the phone, go ahead and pull the charger and continue.)
3. Do not charge the phone until after draining the battery completely, resulting in it automatically shutting off. Take out the battery, and keep trying to turn on your phone until it will not turn back on at all.
4. Recharge the phone completely and then use as you normally would.
This is a method that has been proven to work, I am sure there are other ways. My battery lasts longer after doing this and the reading is much more accurate. It might be advisable to do this after every ROM install if you want the most battery life and most accurate battery reading by the phone's software.
Click to expand...
Click to collapse
Hey everyone, I am having some trouble with my rooted phone. Prior to rooting the phone, I had no battery life issues. Right after Christmas, I had a little bit of time and I rooted my phone for tethering, mostly. I used the root listed on this website at the time (I couldn't use unrevoked because I had just done the OTA update to the software) and installed no further changes. Since then, I can get about 8 hours before the battery is well below 50%. This is without making any phone calls or using the internet, and maybe a few texts. I have resorted to turning off the connection to the internet, and this preserves my battery and allows me to make some calls without absolutely killing my battery. When I unplug, I can almost watch the battery life drain. I will be at 90% by the time my 15 minute drive to work is done. I have tried changing chargers, buying a new battery, and nothing works other than shutting off the connection to the internet. When I look at what has been using the battery, I not no time where I did not have a cell connection, and all the battery usage is idle and connection to network time. Any and all help is appreciated. Thanks!
Wow, your situation seems very strange. Are you running a custom ROM or kernel? Have you tried using spare parts to see what is actually consuming your battery? Perhaps, you can try wiping everything from the phone and installing the stock ROM or other custom ROM of your choice. Please keep us posted, good luck
Recalibrate the battery. I would link you but kinda hard to do so. Just search the forums for it.
Sent from my Evo powered by MIUI
What Rom are u using?
That is happening to me too. After I first rooted the battery life was good better than before. I had been using vaelpak, then a about last week my battery started to drain so fast. I would take it off the charger and do a little texting or check my emails. Shower or what not than I pick up my phone and its like 92% already. Thinking maybe I have too many apps so I deleted some and then forced stopped a few and I forgot what else and that day my battery stayed on 60%(thats what it was on when I took it off the charger before I left) for about a good two hours and i was listening to music and the internet and text and all that. Kinda scared me because I thought I messed something up, but the battery lasted longer that day. Then the next day back to the same old same old. Last night I flashed warm twopointtwo and was charging my evo last night but I put it under the pillows by accident and woke up this morning the phone was burning up and flashing red and green at the same time and it had stopped charging. I took the battery out and let it cool for a few hours. now its charged back up. I wanna see if the battery improves with warm but I think I'm going to flash another ROM but this one is too pixeled and its killing my eyes So upset. but let me know if you fix your battery problem
hmmmm....maybe....
Bruggeman.Adam said:
Hey everyone, I am having some trouble with my rooted phone. Prior to rooting the phone, I had no battery life issues. Right after Christmas, I had a little bit of time and I rooted my phone for tethering, mostly. I used the root listed on this website at the time (I couldn't use unrevoked because I had just done the OTA update to the software) and installed no further changes. Since then, I can get about 8 hours before the battery is well below 50%. This is without making any phone calls or using the internet, and maybe a few texts. I have resorted to turning off the connection to the internet, and this preserves my battery and allows me to make some calls without absolutely killing my battery. When I unplug, I can almost watch the battery life drain. I will be at 90% by the time my 15 minute drive to work is done. I have tried changing chargers, buying a new battery, and nothing works other than shutting off the connection to the internet. When I look at what has been using the battery, I not no time where I did not have a cell connection, and all the battery usage is idle and connection to network time. Any and all help is appreciated. Thanks!
Click to expand...
Click to collapse
I'm having similar problems, though not as dramatic - mybattery life only lasts about a third of what it used to. I am running 2.2 RLS 5 witht the htc stock #15 kernel. What I am trying to do is hunt down a decent kernel that is compatable with RLS 5. I have found a few - but I am still in the process of researching information about the issue.
I have found 3 differant ways to reset your battery... I'm going with the last one (blue) for now and am currently in the process of executing it right now, but here are the three steps I have found while reading:
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.
-----------------------------------------------------------------------------------
this is one from HTC
Charge the phone for 8 hours uninterupted with power on
turn off the phone and charge for an additional hour
turn ont he phone unplug it and let it sit for 2 minutes then plug it in for an additional hour.
-----------------------------------------------------------------------------------
charge the phone to full
unplug and use phone till it shuts off from no battery (do not plug in until it shuts off)
charge phone to full again with out unplugging till 100% (check under about phone > battery it shoudl say full charge there)
then boot into recovery and wipe battery stats
reboot back into phone and charge too 100% with a wall charger( don not unplug until at 100%)
-----------------------------------------------------------------------------------
After I try this out - I might or might not switch my kernel - But I wll say this - I had absolutly awesome battery life when I was running HTC stock #17 - you might could look into flashing that instead of what you are running now (flash it just like you would a ROM) - you can find it here
hope this helps out a little bit - but in reality - getting your battery the way you like it is really more of a trial and error type procedure...good luck
Ah, welcome to an elite club...right. I rooted my 003 Evo last summer after getting it shipped to me. From then until mid-november of last year, I got great battery life. Before the switch flipped in November, I could leave it sit overnight and i'd use 1-1.5% charge per hour, so worst case after 8-hours sleeping with no use I'd be at 86-88% charge.
Then suddenly as it a switch had been flipped, I started getting horrible battery life. The ROM didn't matter, settings mattered little, it just sucks no matter what I do. If I unplug it at 6:00 AM and leave it completely unused until 2:00-3:00PM that afternoon, the stock battery is at 31-35%. The awake time will be under an hour, and every utility that I use reports nothing out of the ordinary.
I bought a 3500 mAh battery and its better of course, but gets me nowhere near the use what the stock battery used to provide. I unrooted back to stock with the same results so I rooted again of course. Might try flashing back to the 1.77 PRI and NV. Some folks are getting better battery life with those, but that may only be related to sleep issues which my phone doesn't appear to have. It may prove to be a waste of time, but I have to keep trying.
Good luck all of the club members! Thank you for your time.
JayStation3 said:
I'm having similar problems, though not as dramatic - mybattery life only lasts about a third of what it used to. I am running 2.2 RLS 5 witht the htc stock #15 kernel. What I am trying to do is hunt down a decent kernel that is compatable with RLS 5. I have found a few - but I am still in the process of researching information about the issue.
I have found 3 differant ways to reset your battery... I'm going with the last one (blue) for now and am currently in the process of executing it right now, but here are the three steps I have found while reading:
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.
-----------------------------------------------------------------------------------
this is one from HTC
Charge the phone for 8 hours uninterupted with power on
turn off the phone and charge for an additional hour
turn ont he phone unplug it and let it sit for 2 minutes then plug it in for an additional hour.
-----------------------------------------------------------------------------------
charge the phone to full
unplug and use phone till it shuts off from no battery (do not plug in until it shuts off)
charge phone to full again with out unplugging till 100% (check under about phone > battery it shoudl say full charge there)
then boot into recovery and wipe battery stats
reboot back into phone and charge too 100% with a wall charger( don not unplug until at 100%)
-----------------------------------------------------------------------------------
After I try this out - I might or might not switch my kernel - But I wll say this - I had absolutly awesome battery life when I was running HTC stock #17 - you might could look into flashing that instead of what you are running now (flash it just like you would a ROM) - you can find it here
hope this helps out a little bit - but in reality - getting your battery the way you like it is really more of a trial and error type procedure...good luck
Click to expand...
Click to collapse
I'm trying the first one right now I will keep you updated to see if this works
im using netarchy 4.3.2 havs more aggressive with both myns roms and my battery is pretty good
JayStation3 said:
I'm having similar problems, though not as dramatic - mybattery life only lasts about a third of what it used to. I am running 2.2 RLS 5 witht the htc stock #15 kernel. What I am trying to do is hunt down a decent kernel that is compatable with RLS 5. I have found a few - but I am still in the process of researching information about the issue.
I have found 3 differant ways to reset your battery... I'm going with the last one (blue) for now and am currently in the process of executing it right now, but here are the three steps I have found while reading:
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.
-----------------------------------------------------------------------------------
this is one from HTC
Charge the phone for 8 hours uninterupted with power on
turn off the phone and charge for an additional hour
turn ont he phone unplug it and let it sit for 2 minutes then plug it in for an additional hour.
-----------------------------------------------------------------------------------
charge the phone to full
unplug and use phone till it shuts off from no battery (do not plug in until it shuts off)
charge phone to full again with out unplugging till 100% (check under about phone > battery it shoudl say full charge there)
then boot into recovery and wipe battery stats
reboot back into phone and charge too 100% with a wall charger( don not unplug until at 100%)
-----------------------------------------------------------------------------------
After I try this out - I might or might not switch my kernel - But I wll say this - I had absolutly awesome battery life when I was running HTC stock #17 - you might could look into flashing that instead of what you are running now (flash it just like you would a ROM) - you can find it here
hope this helps out a little bit - but in reality - getting your battery the way you like it is really more of a trial and error type procedure...good luck
Click to expand...
Click to collapse
**Just a update, the 1st one did nothing for me lol**
DoctorComrade said:
Recalibrate the battery. I would link you but kinda hard to do so. Just search the forums for it.
Sent from my Evo powered by MIUI
Click to expand...
Click to collapse
I used Amon_RA backup to recalibrate the battery this AM. We'll see how that works.
rey823 said:
What Rom are u using?
Click to expand...
Click to collapse
Sprintlovers ROM from the initial root process. Kernel HTC #15
JayStation3 said:
I'm having similar problems, though not as dramatic - mybattery life only lasts about a third of what it used to. I am running 2.2 RLS 5 witht the htc stock #15 kernel. What I am trying to do is hunt down a decent kernel that is compatable with RLS 5. I have found a few - but I am still in the process of researching information about the issue.
I have found 3 differant ways to reset your battery... I'm going with the last one (blue) for now and am currently in the process of executing it right now, but here are the three steps I have found while reading:
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.
-----------------------------------------------------------------------------------
this is one from HTC
Charge the phone for 8 hours uninterupted with power on
turn off the phone and charge for an additional hour
turn ont he phone unplug it and let it sit for 2 minutes then plug it in for an additional hour.
-----------------------------------------------------------------------------------
charge the phone to full
unplug and use phone till it shuts off from no battery (do not plug in until it shuts off)
charge phone to full again with out unplugging till 100% (check under about phone > battery it shoudl say full charge there)
then boot into recovery and wipe battery stats
reboot back into phone and charge too 100% with a wall charger( don not unplug until at 100%)
-----------------------------------------------------------------------------------
After I try this out - I might or might not switch my kernel - But I wll say this - I had absolutly awesome battery life when I was running HTC stock #17 - you might could look into flashing that instead of what you are running now (flash it just like you would a ROM) - you can find it here
hope this helps out a little bit - but in reality - getting your battery the way you like it is really more of a trial and error type procedure...good luck
Click to expand...
Click to collapse
Tried the middle one from HTC as well... we will see how it goes. Just in the time I have been typing this message (about 2 minutes), my battery has gone from 91 to 88%.
Also forgot to add that I have been out of town every week for the last two months and noticed that the HTC weather thing on the startup screen hasn't been switching to my current location. Always shows my hometown, even if I force an update.
I think I figured out the problem... ran into several threads discussing PRI incompatibility with HTC kernel #15. Flashed back to 1.77 and doing much better. Didn't mess with the NV. We will see how it does for the rest of the day.
I have just switched to MIUI RoM and am not sure this has happened on other RoMs, but my phone charge LED has turned green at 91% and is still charging?
This cant be good for the battery can it?
Anyone know why this is happening, all help welcome.
I'm pretty sure that's just how the MIUI rom works, when you get to the 90 percent it just turns the led green. it won't continute to try to charge after it reaches 100%. At least that's the experience I had with it.
Some roms have that setting, that the led is green above 90 percent. Do not think it matters really more than cosmetic.
Thanks guys, yes I left it to charge till 100% and it then said Full charged
It continues to charge at 90% but it reduces the milliamps going in to the battery to make sure it doesn't overcharge the battery
Sent from my HTC Desire using XDA App
shankly1985 said:
I have just switched to MIUI RoM and am not sure this has happened on other RoMs, but my phone charge LED has turned green at 91% and is still charging?
This cant be good for the battery can it?
Anyone know why this is happening, all help welcome.
Click to expand...
Click to collapse
All the other replies have valid points and I don't disagree with them, but if it really bugs you, you can try reset the battery stats...
Charge the phone to full capacity (I'd say when every battery status shows full; light, 'About', widgets, etc.).
While still pluged into charger, restart into recovery and wipe battery stats (I think it's under 'Advanced' if you have ClockWorkMod recovery).
Restart normally and unplug charger.
Run device without charging until it turns itself off.
Reconnect charger and turn it on again.
If the ROM is reporting the battery incorrectly, this should sort it out. Otherwise, maybe that's just how it's meant to report battery status...
ZaLiTH said:
All the other replies have valid points and I don't disagree with them, but if it really bugs you, you can try reset the battery stats...
Charge the phone to full capacity (I'd say when every battery status shows full; light, 'About', widgets, etc.).
While still pluged into charger, restart into recovery and wipe battery stats (I think it's under 'Advanced' if you have ClockWorkMod recovery).
Restart normally and unplug charger.
Run device without charging until it turns itself off.
Reconnect charger and turn it on again.
If the ROM is reporting the battery incorrectly, this should sort it out. Otherwise, maybe that's just how it's meant to report battery status...
Click to expand...
Click to collapse
Thanks I think its all Ok I never watch phone changing at 90+% till other day, and from what I have read this is ok.
Battery seems really good, getting a day out of it.
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.