yashsingh1/xdaforums huggingface dataset:
[EVO 4G General] PoisonWolf:
Oh, I mean the other thread linked in this thread about unplugging and replugging after a fully charged cycle.

I agree, doubling is insane, but in my case, my HD2 loses about 3 ~ 8% idling (depending on signal strength), which is pretty horrible. However, the fact that it's only at 92% after 4 hours does indicate that whatever was done is in fact working though I would not go as far as to claim that it is doubled.
[EVO 4G General] willy900wonka:
I waited about 10 minutes after the charge light went from orange to green, in each step. The battery voltage of full charge went from 4.115 to 4.197. Could be total coincidence could be the affect of the software groundable touch screen channeling the charge from my touch. lol
[EVO 4G General] nbakid2000:
Tried this HTC method as of this morning. WIll report anything new.
[EVO 4G General] itmustbejj:
Correct me if I'm wrong but I believe the reason why this works (the unplug and plug/recharge x 10 cycle) works is because you have a multicell battery and not every cell is getting topped off on a regular charge, thus not truly 100%. That's why the reported battery percent drops so much within the first hour or so.
[EVO 4G General] acrh2:
Here's an interesting result. I plugged my Evo battery into my old Touch Pro2 and the battery percentage was identical at 75%.

I'm guessing that means that Evo uses very similar hardware and algorithms to determine the charge percentage.

The problems with batteries discharging very quickly must be directly related to either defective batteries or the android os.

(btw, I have very good battery life and standby).
[EVO 4G General] Sirchuk:
So I'm curious, I've never really had a battery issue and I think I know why.

When I first got my EVO I used the cheap Chinese extended battery that I had for my Hero, heck, when they opened it in the store I pulled my Hero battery to put it into the EVO. Since then, I mostly use my Hero as a glorified charger, charging the standard battery for 12 hours initially, and then swapping batteries out rather than recharging them in the phone.

Perhaps my batteries are thus "conditioned" already, since I didn't charge them in the EVO initially?
[EVO 4G General] ramiss:
Unlikely that these batteries are multiple cell, unless they are running them in parallel. But even then it makes no sense since the circuitry required for multiple cells will take up more room in the phone.

It is more likely that the upper and lower limits of the battery guage are not calibrated, which these fixes attempt to correct.
[EVO 4G General] infamous21:
Hey xda! Ive had my evo for a couple of days now and the only issue i had with it has been battery life. I tried alot of things to get the batery to last longer but to no avail. im a heavy user (its replaced my pc lol) but i usually get 4 hours of non stop usage. Ive applied the battery trick this morning so ill post my results later tonite. Gotta say though im an hour into it and my bar hasnt dropped yet!
[EVO 4G General] Schulz3:
I worked tech support for a major heat pump manufacture and I surfed forums to get the feel for what people are saying... Kinda good to see how people address different things.

Anyway, trying this conditioning thing tonight, but I do see that the update did help. I didn't hit 15% till 7-8pm tonight and I talked on the phone more today (i know because my mom called twice-never a short conversation lol) I ususally get 15% around 5pm with much less usage.
[EVO 4G General] PoisonWolf:
I'm actually at 45% after 24 hours. This is impressive, this whole 10x top-off method.

I'm usually at about 15 ~ 18% by now after 24 hours. Hurray!
[EVO 4G General] madlazytom:
Omg are you that st**p
[EVO 4G General] Sporkman:
Bumping this since doing this my evo is crazy. ( was good before i got 16 hours plus ) before recharge. Im at 17 hours with 45% battery left! !! This is with heavy use email.data txt mms calls etcetc

sent with my evo from a secret place
[EVO 4G General] DraginMagik:
ditto... SIGNIFICANT improvement in battery life.

OP, thank you for your powerful (and beneficial) voodoo.
[EVO 4G General] Schulz3:
WTF? 1 hour gone by and I am at 88%. THis did nothing for me, maybe I'll try the process again. BTW I have the new OTA update and no friends stream or favorites on.
[EVO 4G General] DJ_Bizarro:
alright, im getting my evo today, can anybody tell me if i should charge it fully first, or just turn it on and do this??? its being shipped so nobody has messed with it yet
[EVO 4G General] nbakid2000:
I tried it but I'm not sure if it worked.

My battery IS getting much longer life, but I'm not sure if it's the update or the actual battery method we used or both. I think I turned off "Background Data" too which probably screwed up the battery life results. That's back on though, and I'm still getting good battery life.

The weird thing is, I pulled it off the charger after the method, and i IMMEDIATELY dropped to 90%. Then it drained pretty fast, then hovered around 60 or 50 percent and just stayed there the rest of the afternoon. Weird.
[EVO 4G General] unknown_owner:
Ok I did this and after 11 hrs, I'm above 75%. This does work. Now I think why it may work for some and not others may be also be attibuted to the rom ur using as well. I'm using the latest OTA rom that HTC sent on Tuesday. From reports, HTC did something to help battery life with that OTA. Those that also have it working, what roms are you using?
[EVO 4G General] tformed:
10 hours have passed, and I'm at 74%. Battery life has definitely improved.
[EVO 4G General] herzzreh:
I think battery reporting on our phones is completely screwed. Earlier this afternoon, my battery was showing ~35%, I put it on a charger and it was showing ~75% within 15 minutes. There is no way this thing can charge this fast! Either this, or constant flashing and reflashing and restoring over the past 48 hours totally borked up my battery stats.
[EVO 4G General] ezkialrage:
this method did not help me at all. in fact i think things got worse. i took phone off of charger this morning at 830 and within 13 minutes (i timed it) down to 91%. the phone was off the whole time. no friendstream, no facebook syncing, it just decided to swan dive to 0% as fast as possible.

i dont know if its improperly reporting battery or what, but i just want a constant truthful battery output. i honestly dont get why the phone looses in between 5-10% an hour just idling. insane is what that is. phone would be the best thing ever if the first 10 min of battery didnt suck so hard.

still loving the phone. gonna try some other things and see what could be causing it.
[EVO 4G General] jmxp69:
For those of you with screwy battery results, try this:

From clockwork recovery, wipe battery stats.

Complete a full discharge. Explanation for why here.

Then perform the OP's charging procedure.

Let us know what happens. And don't cheat, do the whole process.
[EVO 4G General] kthejoker20:
WHATEVER YOU DO, DO NOT FULLY DISCHARGE THIS BATTERY.

Or you will end up taking it back to sprint. It's a lithium battery. If you fully drain it, it will no longer work.
[EVO 4G General] scev5:
why does it seem like 3/4 of the people on this forum are just making sh*t up, and blowing things way out of proportion.
[EVO 4G General] bhtoque:
The poster should have been more specific. You are not totally discharging the battery, which would cause damage. The device does a self-shut down (as most do) to protect the battery against an actual complete discharge.

Just run the phone till it shuts itself off, then recharge.

JAson
[EVO 4G General] jmxp69:
Unless you have specific equipment to fully discharge the battery, you cannot damage it by running it to empty within the phone. The phone is designed to the lowest common denominator. How many freaking RMAs do you think Sprint would have if every single person who's phone shut down due to battery had to return it? For ****'s sake, use a little common sense and don't be an alarmist.

Thank you.
[EVO 4G General] Minjin:
It's not even the phone that prevents you from over discharging it. Most lithium batteries have a protection circuit inside that will shut off if: (1) voltage gets too low, (2) voltage gets too high, (3) battery temp gets too high, (4) current draw is too high.
[EVO 4G General] jmxp69:
What I don't understand about this process--and what makes me think portions of it are completely unnecessary is what happens when charging lithium ion batteries.

All of the following is from batteryuniversity.com:

So once the battery is charged (and the led turns green), that's it. The phone or battery circuitry should prevent any additional charging.

I will admit, I've been using USB to charge because I get better (re: measured) results that way, and I do unplug/replug every morning because I know the phone stops charging in the middle of the night and runs on battery until I disconnect/reconnect the charger.

I just can't figure the reason to leave the charger connected for a full hour after shutting down, and the power-up/off cycle. Seems like a waste of time to me.

Is anybody tracking results with one of the plotters (System Panel or Juiceplotter)?
[EVO 4G General] Schulz3:
I got the same thing, but I noticed my office is a bad signal area and when looking at my cell signal standby it was 60-70% of my battery usage. After i went home last night, it stayed at 27% for couple hours until I started downloading and playing games.

Today my phone has been off the charger since 7:30am it is now 11:00 am and I have 83% battery. This battery trick definitely helped me Before I was at 60% at this time and below 10% at 6pm.
[EVO 4G General] chris44gw:
I just wanted to throw this tidbit in. I've been trying to do what this thread says with varying success. There has to be something else going on though. I have my dad's evo also at my place waiting for him to get back to his house so I can switch his phone to the evo (the sales lady let me since he was on vacation and just said switch it back when he gets home). So far I've done nothing to it. No programs or any adjustments. I just took it out and charged it up. Not wanting to damage it I wanted to let the battery run down after it's 1st full charge. I forgot about it and 4 days later picked it up and it was still around 55-60%. It was just sitting there idle. I couldn't believe it. It leads me to think though that something is sucking the battery dry software wise. I've messed with mine enough to where I average around 4-5% battery loss an hour but watching my dad's gives me hope that it can get even better.
[EVO 4G General] EtherealRemnant:
I did the method in this post and I must say the results are promising. I charged the battery as described except I did it in my touch pro 2. The phone has NEVER shown me 100% before and even though I was using it it stayed at 100 for about 10 minutes. There is definitely something to this. Will track with systempanel.
[EVO 4G General] tformed:
I noticed that my battery life isn't as good as when I first tried this. I wonder if I need to do this every time to have the same results. It has been 57 minutes since it was completely charged, and battery life is at 75%.

I'm going to try the method again, tonight.
[EVO 4G General] EtherealRemnant:
I ran my battery from 100 -> 6% in 24 hours. This is MUCH better than previously where I'd lose 5-10% an hour just idle. I don't remember the exact number but when I checked, I was at 20 hours of idle and like 4 1/2 awake time.
[EVO 4G General] tformed:
What tool do you use to check your idle time and awake time? I use the System App, but I wish it showed me the exact time it has been unplugged from the charger.
[EVO 4G General] MordyT:
Funny, cause mine does...

Sent from my HTC EvO 4G
[EVO 4G General] jasonleb1:
This made my battery life worse. I did it exactly as it said and my battery is now dropping 3% every 10 minutes even though it's locked with the screen off, all applications killed, no 4g, no wifi, no gps, and no cloud syncing, a still wallpaper and no widgets.
[EVO 4G General] dglowe343:
I've tried the charge until led turns green method and it seemed to help. Also, I'm running Damage Rom 3.2.2 which has a battery saving profile setting and I downloaded Autoruns from the market which allows you to select which apps and services you don't want running during and right after boot. I still have issues with battery dropping from 100 to 90/92 percent quickly, but I can go 9 hours at work with normal use (texts, internet, games) and still be around 65-75 percent. Before I would have to use the charger at least once during work.
[EVO 4G General] Rhys'Droid:
Thought I would share this.
[EVO 4G General] cynikaloptimist:
Great...I abolutely love it. Jokes, you got em.
[EVO 4G General] cynikaloptimist:
By the way, I have found that you really have to be vigilant about which apps you put on your phone. I don't use Task Killers so I took a few days to weed out apps that I rarely used, the ones that I felt I needed and the apps that I use everyday. I managed to get my phone to run for a full 7 hours, with wifi and 4G alternating, gps, background sync, live wallpapers, and auto brightness (outside in the sun) while using it the entire time.

I am mostly happy with battery life as it is, and this is before I have attempted this battery trick from HTC.
[EVO 4G General] halorin:
All I can say is this has dramatically improves my battery life.
[EVO 4G General] clayginn:
anyone try charging from USB 1.1 may kick it to a trickle charge
[EVO 4G General] Greatbape:
Is this a one time deal or do I have to constantly do this every charge to get the results?
[EVO 4G General] halorin:
My battery life was holding up like a champ until I flashed to another ROM. Now it's back to how it used to be. I'm going to do this again today and see if it sticks.
[EVO 4G General] itmustbejj:
If you wiped data/cache you wiped your battery stats and need to recalibrate your battery.
[EVO 4G General] OneStepAhead:
agreed... i'm still getting 20 hours or so since i did this a week ago. no need to put a huge battery in my evo anymore. i actually ordered a 2nd oem battery, the red one.. got it for $25 shipped. if i can get 20 hours out of these babies, thats good enough for me.
[EVO 4G General] halorin:
I figured as much. Thanks for confirming.
[EVO 4G General] stewie-droid:
Ok. That does not work for me! Did exactly as they stated which btw does not makes sense if one believes that there are electronics preventing it from overcharging or trickle charging it up, therefore after green light no more juice will get pumped into battery.

My battery dropped 10% in 30 minutes. After all tricks and tweaks and cpu set on damand up to 614Mhz i get about 10hrs of medium use with NO 4G, no gps, no bluetooth, no wifi. Just 3G.

On train, lunch and train back, which does not inclued calls and txt, but those don't take much battery juice anyway.

I just have question. Did anyone figure out what is the "core problem" of what drains the battery down, especially within first hour. It almost seems like defective hardware or battery. Shall we go to sprint store and ask for new batter. I'm IT guy and i want to pin point the issue so either can be addressed or dealt with. Any one pin pointed the issue? For example Motorola Droid X does not have drainage of battery as Evo does yet it has same specs.
[EVO 4G General] PikkonX:
Before this morning, I would always leave my phone plugged up overnight and once I take it off the charger to go to work it would start draining very fast within the first couple minutes to an hour. Last night I did something a bit different. I charged it until the phone said 100% and then unplugged it (at 3:40am). When I left to go to work at around 9:30am it surprisingly hadn't drained too much and was at 97%. I used it regularly today by texting, talking, and a lot of web browsing and I still have 15% battery left as of now (8:45pm). I'm not sure what's going on, but it seems that if you leave the phone plugged in after the phone says it's done charging, it'll have adverse effects on battery life.
[EVO 4G General] stewie-droid:
I will give that a try but don't it will work for me. Pretty much tried everything possible. BTW your Android system is kinda low @27% which tells me that you have not been using browsing or android system that much. I have mine at 38% but then again my cell standby is lower. All those values = to 100% so this is very relative and inaccurate measure yet i only did i think about 4-5 hr of web browsing on 3G. I'm not asking too much. I just want battery to last 14hrs with medium use without and drastic measures. After all i do wanna use the phone.
[EVO 4G General] PikkonX:
Yeah I can't give a hard number, but I know I was browsing a good amount at work on 3G to keep up with NBA/phone news. The other change I made was using Automatic Task Killer to shut down select programs that I don't mind closing when I turn off the screen (and I used to be very anti-task killer). The battery life really doesn't seem to budge now unless I'm actively using it. Coming up on an hour since my last post and it's still sitting at 15%. In the past it would just drain for no reason at all when not in use.
[EVO 4G General] talltatro:
Yea thats definitely a lot of work to do just to charge a phone. One would hope that just plugging your phone in until the charge light comes on would have the same results.
[EVO 4G General] stewie-droid:
Hmmm to me that sounds like your android perhaps from battery stats finally figured out how much to charge the battery where with reset of these stats it would be still blind. Totally guessing but maybe wiping battery stats is bad idea and perhaps phone need like week of battery stats to figure out how to charge the battery. Pure guess. I have been experimenting with different ROMS so i have not been on one rom more then few days at best. I still think eiter battery is defective or phone. First 30min drop of 10% is nuts.
[EVO 4G General] PikkonX:
I think that may be exactly what's going on with mine. My Hero also took a week or two before the battery became more stable. I just got the phone on Friday, but I've done a few wipes without touching the battery stats. I'm not sure if the regular data wipe erases the battery figures or not. Before today though it was definitely doing the same ridiculous 10%+ drops within an hour with no use at all. I hope you can find a good solution.
[EVO 4G General] jtadeo:
turn off the phone and triple the battery life!
[EVO 4G General] mlee0921:
clockwise or counter?
[EVO 4G General] spidercheck04:
don't think this will be good for the battery its exceeding its capacity and might even exploded like those flip phones that if you charge it more the battery dies and plus its will lose a lot of life although it might increase the life of ur phone but the battery will die faster, to much charging is bad .....ever used a rechargeable batteries AA or AAA same thing happens.
[EVO 4G General] stewie-droid:
Can someone please post screenshots of their system panel so i can see how phone is used during 1 day and how battery life doubled ?

I have brought interesting point in this thread.

http://xdaforums.com/showpost.php?p=7124594&postcount=21
[EVO 4G General] LearnIIBurn:
I love all the battery voodoo this phone has created! It's fun, although kind of annoying I understand. I went overboard myself trying to maximize my evo battery life with ROMs and app killers and counter clockwise headstand raindances. Then after the OTA update I decided to go back to stock and have been that way for a while. I swear just give your battery some time to learn cause it really seems to. No matter what Rom you chose just stick with it for a while so your battery has time to iron itself out. I am super happy with battery life atm.

Also I had a quick question to all you app killer users. What apps do you auto kill? I mean I know there are many apps out there, but out of the core Android apps, which do you kill when the phone sleeps? Just curious. Thank you all and happy droiding!

Tyler

Sent from my EVO from the Apple Store.
[EVO 4G General] EVOmaniac07:
Didn't work :( i've had both battery types and both are terrible for me with all the tricks to boost battery life. I don't get it. I hate having to charge my phone every 4 hours when i hear people can make it a whole damn, some even 2. WTF!!!!!!
[EVO 4G General] DJ_Bizarro:
i got my evo and before anything i turned it on and started charging it as described in the first post. having never using it i cant compare against anything but i will say i usually get about 12+ hours of heavy use between charges. i often use the mobile hotspot, i often use google maps and navigator i talk a few hours daily send emails text messages and facebook right now i am at 11 h 32m since unplugged and have more than 50% battery life
[EVO 4G General] jathomas0910:
Ok I did it at 7:15am and I will let you guys know....I am goons to use it normally except for 4g and gps

You know funny thing is one day the week before last I had my phone on the charger all night then I took it off around 7 like I always do but then I decided to get a few more min of sleep so I plugged it back up

but I over slept and end up leaving the house at 11, my phone lasted till about 2am the next no joke and I was finger banging my phone all day talking on it and everything. So I feel asleep at my friends house and woke up and went home got home at like 2am .next day and my phone still on....it never died, next day it only lasted the standard 4 hour...
[EVO 4G General] jathomas0910:
So far so good, its 12:50pm and my phones not even half way through...been talking and finger banging it all day...ill keep yall posted
[EVO 4G General] thenags:
Just tried it.. Hope it works.
[EVO 4G General] goldt:
Is this a one time thing or do we have to do this every time we charge the phone?
[EVO 4G General] Quick2822:
I didn't follow the guide exactly (I had it plugged in for about 10 hours, from a completely dead battery). I left it off for about 50 minutes, instead of the hour.

Anyway, I am already noticing a difference. The battery indicator stayed full for much longer than it ever has before. Unfortunately I can only do it on the weekend, so I won't know exactly how well it worked until I go through my normal work day. But I've been using it a bit more than I would on purpose, playing a game or two, web browsing, sms, etc..

I recommend doing it. If anything, it won't make your battery problems and worse.
[EVO 4G General] hannsz:
I did the HTC fix but didn't wait 8 hours/1 hour/1 hour, just ~5 minutes between charging/turning on/off/etc..

I'll be making a slightly different thread here soon....but anyway, some stats for todays testing:

Battery stats:

Time since boot (unplugged): 15h38m

43% remaining according to Spare Parts, 3781mV

Usage:

17 minutes of talk time

266 text messages sent

~30 minutes of random internet usage, testing new apps from market, FTP transfer via SwiFTP, and Dropbox

Non-changing OS Settings:

Fresh 0.5.3 /w Novatech fix kernel

Screen at ~30% brightness

WiFi On

SetCPU: 1190mhz <100%, 998mhz <75%, 768mhz <50%, 499mhz < 25%, 245mhz screen off

TasKiller set to autokill on screen off

Auto-updating widgets:

K9 sync interval @ 30min

Beautiful "Small Home" - weather updating @ 60min

Mini Panel

SetCPU widget

Other widgets:

Extended controls bar

K9 data sync widget

Cachemate widget

Once battery reaches <10% I'll plugin and ddms a system panel screenshot.

This battery life is excellent compared to how the phone came, easily lasting all day with my average use and a little more.
[EVO 4G General] stewie-droid:
Good statistics and screenshots would be better but you only used 30 min of browsing which is extremely low therefore good battery life.
[EVO 4G General] hannsz:
Been home all day, no need to be using the phone to browse :) Going out tonight, which may or may not use much battery life.

Current system panel screenshot: