Develop Bugs

Replacement battery?

I noticed my phone only holds a charge for about 3 days... (I dont use it much but it is on during school which is 6 hours.) I was talking on the phone yesterday for only about an hour or two and it died... A few questions:
Is this normal wear and tear on the battery?
I am charging it with a razr charger, is that harming the battery life?
Should I replace it, if so what's a good worth the price replacement? (I am not looking to spend too much...)
Or can I save the battery by doing something to it? I've heard letting it die and putting it in a freezer somehow makes it last longer... (haven't tried it though) or running lowlight or something?
thanks

3 [email protected]!
That's awesome compared to what I was getting!!!
I would be lucky to get a day with my phone clocked to stock, and minimal text/talk. The only thing that would make a difference is my e-mail would be checked every 5 minutes.
If it's the standard battery that came with the phone it's probably expiring.
This guy explains it well
Charging it with the wrong charger can only hurt it.
Not sure about salvaging the battery, I have heard it works, but just be prepared to buy a new one just in case it doesn't.
Here is a thread I made which turned into a pretty good battery discussion thread.
good luck!

thunderwolf333 said:
I noticed my phone only holds a charge for about 3 days... (I dont use it much but it is on during school which is 6 hours.) I was talking on the phone yesterday for only about an hour or two and it died... A few questions:
Is this normal wear and tear on the battery?
I am charging it with a razr charger, is that harming the battery life?
Should I replace it, if so what's a good worth the price replacement? (I am not looking to spend too much...)
Or can I save the battery by doing something to it? I've heard letting it die and putting it in a freezer somehow makes it last longer... (haven't tried it though) or running lowlight or something?
thanks
Click to expand...
Click to collapse
SEARCH BEFORE YOU MAKE A THREAD. We have a replacement battery thread already.

roloracer said:
SEARCH BEFORE YOU MAKE A THREAD. We have a replacement battery thread already.
Click to expand...
Click to collapse
2nd that!!!
OP: 3 days be happy you have a SP..............

roloracer said:
SEARCH BEFORE YOU MAKE A THREAD. We have a replacement battery thread already.
Click to expand...
Click to collapse
Yes, I do realize there are numerous threads on this subject already, however, I had a specific question pertaining to charging my phone with a RAZR charger.

thunderwolf333 said:
Yes, I do realize there are numerous threads on this subject already, however, I had a specific question pertaining to charging my phone with a RAZR charger.
Click to expand...
Click to collapse
Then that should've been the name of the thread, and we probably have a thread with that topic also . I've heard that using the wrong charger on a phone, even though is the same plug, might not be set for the same charging current, and ruin your battery.

Thanks guys for the help. I think I'm just going to deal with my 3 day battery seeing as how most people have much worse batteries. If it becomes worse to where it won't run I'll replace it...

So I bought the Seidio 3500mAh...

And it doesn't seem to charge pat 70%. I'll leave it on the charger until it is at 100% (not 90% like some people have issues with), and then when I take it off, within 2-3 hours I am down to anywhere from 72-68%. This isn't with heavy use, for example this morning it has been off for 2 hours, it is at 75% and I did nothing with it except read one email.
Just testing things out, I charged it while the phone was off, and it seemed to discharge slower.
Is this a common thing with these batteries or is mine somehow defective?
Thanks.

Did you recalibrate the battery in your recovery? Charge to full, boot recovery, wipe battery stats, then let it run till it dies.
Sent from my PC36100 using XDA App

smw6180 said:
Did you recalibrate the battery in your recovery? Charge to full, boot recovery, wipe battery stats, then let it run till it dies.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
I did, but I might try that again. It may not have been actually at 100% (I didn't turn it off, because I didn't know about the issue when I calibrated).

All the other threads had the answer but.....
The driver that has the stats for the 3500mah battery isn't there.
They only included the driver with stats for 1500mah.
If you want to fully charge the battery, you have to do it externally. Even with phone powered off, it may not fully do it.

Compusmurf said:
All the other threads had the answer but.....
The driver that has the stats for the 3500mah battery isn't there.
They only included the driver with stats for 1500mah.
If you want to fully charge the battery, you have to do it externally. Even with phone powered off, it may not fully do it.
Click to expand...
Click to collapse
+1.
The evo can't charge the seidio or any non-htc battery properly. Get an external charger and watch your battery life increase with every charge. I don't even wipe battery stats anymore.

Compusmurf said:
All the other threads had the answer but.....
The driver that has the stats for the 3500mah battery isn't there.
They only included the driver with stats for 1500mah.
If you want to fully charge the battery, you have to do it externally. Even with phone powered off, it may not fully do it.
Click to expand...
Click to collapse
That would make sense... I might ditch it then, if I can't reliably charge it 100% because the battery door is pretty hard to remove compared to the stock one and I don't want to end up breaking it one day.
Is that something that would be in the ROM? I'm just wondering if it's worth holding out hope for someone to write a driver for it in CM6 or something.

Yeah I just let it charge until it turned green, turned it off and let it charge until green again (another half hour or so), unplugged it and did it again and it is now at 89% after literally just wiping the battery stats and booting up.
Maybe I'm just being too neurotic about it. It lasts 2 days, I guess I should be happy, but with the stock battery I got 30-36 hours using CM6 and Snap, so I was hoping for more than that.

Been having similar issues did a full wipe the last Rom I loaded and now two hours after unplugged I'm still at 100% so who knows.
Sent from my FroyoEris using XDA App

mrmylanman said:
That would make sense... I might ditch it then, if I can't reliably charge it 100% because the battery door is pretty hard to remove compared to the stock one and I don't want to end up breaking it one day.
Is that something that would be in the ROM? I'm just wondering if it's worth holding out hope for someone to write a driver for it in CM6 or something.
Click to expand...
Click to collapse
It's hard to say if it's in the rom because the evo itself will not charge any non-htc battery correctly even when it is turned off. It seems there are both hardware and software controls to ensure nothing but the evo battery gets charged correctly.
Here is what I did about the battery door http://forum.xda-developers.com/showthread.php?t=786101

The fact that this battery has been out for so long, so many people have it, and HTC knows about this flaw and hasnt done anything about it is absolutely pitiful and HTC should be ashamed of themselves.
As everyone has said, the only way to get a proper 100 charge is in an external charger. The closest way to to do it in the phone is to leave the phone charging overnight, unplug it when you wake up, and plug it in about 5 minutes later to top it off. Youll get close but it still wont be true 100.
Either way, the only way to properly charge any extended battery for the evo is in a wall charger.

dang i should have canceled my order. Seidio's stupid cancellation policy made me not do it. "cancellations after 2 hrs incur a fee" Now im going to have a Evo with a pot belly and a empty stomach. BS

Indiana Jones said:
dang i should have canceled my order. Seidio's stupid cancellation policy made me not do it. "cancellations after 2 hrs incur a fee" Now im going to have a Evo with a pot belly and a empty stomach. BS
Click to expand...
Click to collapse
If you can get it charged properly youll be happy with it. You just have to work around HTC's dumbness.

MSmith1 said:
If you can get it charged properly youll be happy with it. You just have to work around HTC's dumbness.
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Click to collapse
Yeah it seems like I guess it's mostly HTC's fault in this manner. I'm back on the stock battery for now. I might just keep the extended battery at ~60 (apparently the best way to store Lithium Ion) and when I plan on heading out for a weekend trip or something like that, I'll charge the battery up and put that in my phone.
For everyday use, having to remove the battery to charge it sucks.

What would be ideal is if HTC allowed you to key in the MAH of the battery you have installed in your phone or something along those lines to ensure the battery gets charged correctly . I know its a long stretch but hey I can dream ROFL . This charging bug has been the one major thing preventing me from getting an extended battery . I have toyed with the idea of getting a chinese one for cheap just to play around with and so forth but not to drop the cash Seidio wants for theirs . HTC needs to address the charging issue anyways , most users that use a wall charger for their stock batteries have reported improved battery life . Its sad when a cheap wall charger from china out performs charging a battery better than a 600 dollar phone is able to .

I dug thru the code for the battery driver. There seems to be 3-4 different driver sets, but all are 1500mah or less.
It's been many, many years since I programmed, but the structure has an array of temps, max, min MAH, charge rate, and quite a few other specifics relating to battery.
I'm not sure the logic between the charge circuit, the battery and how it knows which battery is inserted, but some of this info is parsed into the logs while it's charging.
A decent programmer could probably code and recompile this into the OS. That programmer isn't ME. I switched to engineering and networking too long ago to remember enough not to blow stuff up.

This is the one thing keeping me from purchasing a hicap battery. Good to hear that it is software related though. Maybe if they got a pool going some enterprising dev will take a whack at it. Disclaimers work

Compusmurf said:
I dug thru the code for the battery driver. There seems to be 3-4 different driver sets, but all are 1500mah or less.
It's been many, many years since I programmed, but the structure has an array of temps, max, min MAH, charge rate, and quite a few other specifics relating to battery.
I'm not sure the logic between the charge circuit, the battery and how it knows which battery is inserted, but some of this info is parsed into the logs while it's charging.
A decent programmer could probably code and recompile this into the OS. That programmer isn't ME. I switched to engineering and networking too long ago to remember enough not to blow stuff up.
Click to expand...
Click to collapse
im wondering if cyanogen and co can work their magic

I'm quite sure they and many others could, but not everyone has the Seidio battery, compared to the numbers of EVO users.
It's probably not worth their time and effort to bother.
What WOULD be nice is if the Seidio folks had programmers instead of just sales folks and could code their own patch for their own products.
I won't be holding my breath tho for any solution. it's ok for me, I have the external charger from my TP2 days. Plus spare batteries as well and don't mind switching when needed. I knew of the issue and was prepared for it before purchasing.

Compusmurf said:
I'm quite sure they and many others could, but not everyone has the Seidio battery, compared to the numbers of EVO users.
It's probably not worth their time and effort to bother.
What WOULD be nice is if the Seidio folks had programmers instead of just sales folks and could code their own patch for their own products.
I won't be holding my breath tho for any solution. it's ok for me, I have the external charger from my TP2 days. Plus spare batteries as well and don't mind switching when needed. I knew of the issue and was prepared for it before purchasing.
Click to expand...
Click to collapse
Yeah I wasn't so much prepared for it. I heard a few things about it, but nothing solid for sure, I should have done some more research. All the reviews on websites were glowing, but I usually take that with a grain of salt.
Too bad even if Seidio had programmers, I'm on CM6 so that wouldn't help me too much haha. On my stock battery I'm getting around 24-28 hours which is plenty fine I guess. Not looking forward to when the battery starts losing its maximum charge, though.

So i don't have an external charger...but i followed the instructions via seidio...
heres what i got:
Rom: CM6 Final Stable
SetCPU: 245/1152 Conservative (Freq Step = 10)
Took phone off charger (from phone) aat 5:30AM
will post back later today with results (hopefully good)

[Q] Mugen Battery strangeness...

This is my first post on here,but I've been lurking for ages I just bought a Mugen 3200mAh battery from MugenBattery.com.I already know about not having to condition it(lithium ion),so I ignored the instructions about cycling it and plugged it in and used it right away,and at first it seemed okay for around an hour(I didnt use it at all up to this point,just left it there until I needed it).When I went to unlock my Vibrant from suspend(pushing on the power button),the phone shut off and seemed like it was rebooting...but it just had the first screen you see(the one with Samsung and Vibrant on it) blinking on and off,even when I plugged in the charger in this state,all that popped up was a battery that also blinked on and off.The only way to get it going again was to pull and replace the battery,and it went back on again...then did this all over again when it went into suspend and I tried to unlock it.All the while,the battery stated it had around 75% power,so I have no idea what could have caused this.I put my cheep chinese 2700mAh battery back in and all was well again,so I know its the battery,not the phone.Anyone else have or seen this problem before?This is the most expensive battrery I have ever purchased for a phone at $88.00US....I hate to think that a cheep($20.00US) chinese battery has better quality control than it....

i think you need to charge it for 12 hours first.
Sent from my SGH-T959 using XDA App

Thanks,you were right! An overnight charge of around 12 hours did it.This is the first phone battery I had to do that with to get them to just work at all.Seems to work just fine now Again,thank you!

Let us know how long the battery is lasting once you get a few cycles please!

Yeah, you should run the battery dry, recharge, run dry, recharge and after a few cycles your life should improve.

Will do,just need a few days to do it,its lasting a looooong time!

XPLANE9 said:
Yeah, you should run the battery dry, recharge, run dry, recharge and after a few cycles your life should improve.
Click to expand...
Click to collapse
NO, NO, NO. PLEASE stop spreading bad information. This will HARM the battery, and will have 0 benefit. The only "benefit" you can get from this is that the battery meter on the phone's firmware will be calibrated to show a more correct remaining %. You can achieve the same by charging the phone 100% (overnight) going to clockwork recovery and selecting 'wipe battery stats'. Calibrated or not, the battery will last the same, regardless of what % left its showing.
Again for posterity, REPEATED DISCHARGING OF LI-ION BELOW 20% IS BAD FOR THE BATTERY, IT'S PHYSICALLY IMPOSSIBLE FOR IT TO GET BETTER.

I am having a similar issue with a battery that I ordered off of ebay. It's 3500mah.
When I plug it in it will turn off and get stuck in a boot loop on the vibrant screen, but if it is off then it won't turn on at all when plugged in. It has been plugged in for 9 hours so far and it doesn't even show the charging animation or anything.
Normal? Or is the battery defective?
Thanks.

Ok. After charging it overnight and still nothing, I'm going to assume its broken. Thanks.

dragon2knight said:
This is my first post on here,but I've been lurking for ages I just bought a Mugen 3200mAh battery from MugenBattery.com.I already know about not having to condition it(lithium ion),so I ignored the instructions about cycling it and plugged it in and used it right away,and at first it seemed okay for around an hour(I didnt use it at all up to this point,just left it there until I needed it).When I went to unlock my Vibrant from suspend(pushing on the power button),the phone shut off and seemed like it was rebooting...but it just had the first screen you see(the one with Samsung and Vibrant on it) blinking on and off,even when I plugged in the charger in this state,all that popped up was a battery that also blinked on and off.The only way to get it going again was to pull and replace the battery,and it went back on again...then did this all over again when it went into suspend and I tried to unlock it.All the while,the battery stated it had around 75% power,so I have no idea what could have caused this.I put my cheep chinese 2700mAh battery back in and all was well again,so I know its the battery,not the phone.Anyone else have or seen this problem before?This is the most expensive battrery I have ever purchased for a phone at $88.00US....I hate to think that a cheep($20.00US) chinese battery has better quality control than it....
Click to expand...
Click to collapse
Not to derail, but how much weight does it add, and how well does the back cover fit on that big Mugen?

it fits good...
lincoln131 said:
Not to derail, but how much weight does it add, and how well does the back cover fit on that big Mugen?
Click to expand...
Click to collapse
...and it does get a bit bulky,weight goes up to about double the amount,but it is so worth it,and then some!!I went from 6 hours on the stock battery to over 18 with the Mugen,and thats with heavy use(full brightness/live wallpaper,etc.).If you dont have access to a charger outside your home,this is a great buy,and you know the quality is there,unlike the uncertainty of the cheep chinese ones.Highly recommended!

The OS needs to learn your new battery. Just takes time and usage.
Sent from my SGH-T959 using XDA App

just bought 3000 mah
just bought one from accessory geeks, it came 70% charged, and am updating battery stats after a full charge, during stat recalibration, power is iffy. will update, and am considering mugen. any suggestions?

I am not so sure about your information
Mannymal said:
NO, NO, NO. PLEASE stop spreading bad information. This will HARM the battery, and will have 0 benefit. The only "benefit" you can get from this is that the battery meter on the phone's firmware will be calibrated to show a more correct remaining %. You can achieve the same by charging the phone 100% (overnight) going to clockwork recovery and selecting 'wipe battery stats'. Calibrated or not, the battery will last the same, regardless of what % left its showing.
Again for posterity, REPEATED DISCHARGING OF LI-ION BELOW 20% IS BAD FOR THE BATTERY, IT'S PHYSICALLY IMPOSSIBLE FOR IT TO GET BETTER.
Click to expand...
Click to collapse
I am not so sure about your information. This is what DHGate, a wholesale Chinese online store wrote about the 3000mah battery for Galaxy S [not MUGGEN!]
How to use a new battery:
1. First when you received the battery,. you need to release the power in the battery, just put it into your phone without charging.
2. After the battery power is out, please charge it about 12 hours in first three times.
3. So the battery will be actived. So you can just charge it about 5-7 hours when use in the further.
You can find the URL here:
http://www.dhgate.com/ems-free-i900...-back/p-ff8080812c87c8d9012c97f06d9410ea.html
I also recommend you to read the article "Everything You Need To Know About Bump Charging And Inconsistent Battery Drain" here:
http://www.androidpolice.com/2010/1...bump-charging-and-inconsistent-battery-drain/
So this a controversial matter, isn't it?
Roby

roby5167 said:
I am not so sure about your information. This is what DHGate, a wholesale Chinese online store wrote about the 3000mah battery for Galaxy S [not MUGGEN!]
How to use a new battery:
1. First when you received the battery,. you need to release the power in the battery, just put it into your phone without charging.
2. After the battery power is out, please charge it about 12 hours in first three times.
3. So the battery will be actived. So you can just charge it about 5-7 hours when use in the further.
You can find the URL here:
http://www.dhgate.com/ems-free-i900...-back/p-ff8080812c87c8d9012c97f06d9410ea.html
I also recommend you to read the article "Everything You Need To Know About Bump Charging And Inconsistent Battery Drain" here:
http://www.androidpolice.com/2010/1...bump-charging-and-inconsistent-battery-drain/
So this a controversial matter, isn't it?
Roby
Click to expand...
Click to collapse
No controversies at all. Your info from the link is outright wrong.
Mannymal is correct on this one.

I also have this battery. By the time I got it, Team Whiskeys roms had gotten good enough to where I didn't need an extended battery for day to day use (stock battery usually has 30-40% when i go to bed), but I do use it when I travel, so I don't have to worry about using it like crazy. The battery lasts a long time, probably like 2 or 3 days if I actually tried to drain it, at least. And it's definitely adds bulk, but it's reasonably well made and feels sturdy.
My only complaint is that I sometimes cover the speaker with my finger when I want to silence it real quick, and it doesn't work with this because the cover's so far from the speaker. But that's just my weird thing.
Also, yeah, don't kill your battery. No es bueno.

What is this? How do I read?
What is this? How do I read?

I use a seido innocell battery and it works great after a few over night charges. I get about 8 hours average of talk time. The battery is pretty small compared to the one accessory greeks sell. Even though the ah battery ia twenty five dollars, that is like the entry level name brand battery, it will lady you a while longer than the cheap ones on ebay, but I don't knower about the ones on ebay although I do know about the one ag sells skies down charging after about 45 percent charging. The seido is charging pretty fast for me and is half the price of a mugen, the next battery I'm going to buy will be the nugent, not because I need it, just
Cause I want to enjoy it.
Sent from my SGS-t959 using XDA Premium App

All batteries are so used it. . . .
All batteries are so used it. . . .

Warning about fastboot on Evo

Just want to give everybody a heads up about fastboot on the Evo. First I'll give a little background of the things I have done with my phone.
Root & Nand Unlock
Running CM7 Nightly build #26
Custon Splash Screen and Bootloader
Nothing special about it but it was a work in progress..
Now onto the warning.
I had my phone in fastboot mode working on pushing a different Splash Screen to my phone when I realized that I was late for picking my girl up from work. Looking back now this was a dumb idea, but I decided to just leave and pick her up and I would finish when I came back. Meaning that I left my phone plugged into the computer in fastboot mode and I had the command prompt up as I was typing in the code to push the image. When I returned home my phone was off. I also realized that the charging light wasn't on. I tried turning on the screen and nothing. Tried booting into recovery and nothing again. So i decided to unplug it from the computer and plug it straight into the wall hoping that might help. I was wrong. 30 minutes later still no charging light at all. Not even blinking. Not exactly sure what caused the bricking of my Evo. If it was leaving it in the fastboot screen to long, having it plugged into my computer, having the command prompt up or maybe a combination of all of them.
So moral of the story is don't do this lol.

Wow, sorry to hear that. Have you tried removing the battery for a couple minutes? then put back in and plug in to charge?
My sisters phone was absolutely dead and wouldnt come on and no charge light. It took several attempts of pulling the battery, re-inserting it before the charge light came back on. (If im not mistaken the phone does not charge in fast boot, so maybe your battery is super dead like hers)

Yea, I would definitely try a known good battery before letting your Evo RIP. Sometimes li-po batteries get dead to the point that they wont take a charge.
Sent from my PC36100 using XDA App

elegantai said:
Wow, sorry to hear that. Have you tried removing the battery for a couple minutes? then put back in and plug in to charge?
My sisters phone was absolutely dead and wouldnt come on and no charge light. It took several attempts of pulling the battery, re-inserting it before the charge light came back on. (If im not mistaken the phone does not charge in fast boot, so maybe your battery is super dead like hers)
Click to expand...
Click to collapse
Fantastic call!!!! My girl also has an Evo so I stole her battery and put it in my phone and presto it works just fine. So now I have my battery in her phone on the charger. It has been a little over 2 1/2 and still nothing. So I am thinking that the battery might just be permanently dead. If that's all that happened then I am satisfied. I can handle buying a new battery but I really didn't want to get a new phone. Thanks to both of you guys "elegantia" and "k2buckley". I appreciate your posts

obrien84 said:
Fantastic call!!!! My girl also has an Evo so I stole her battery and put it in my phone and presto it works just fine. So now I have my battery in her phone on the charger. It has been a little over 2 1/2 and still nothing. So I am thinking that the battery might just be permanently dead. If that's all that happened then I am satisfied. I can handle buying a new battery but I really didn't want to get a new phone. Thanks to both of you guys "elegantia" and "k2buckley". I appreciate your posts
Click to expand...
Click to collapse
Glad to help, and glad you got it going again! What a relief for you! Yea, these batteries don't like to die completely, despite what some people say. The fact is, lithium polymer/lithium ion batteries don't like to be drained to 0. But at least it's just a bad battery. Check on ebay, I've heard good results about some of the cheap ones on there. And best buy also has a 1750mah battery, that is the same physical size as stock, but has a little more juice (stock is 1500mah). Good luck.

You can pick up a brand new OEM battery off of Amazon for $13. I'd go that route before the 1750 mAh batteries off eBay. The tests I've seen show they actually have less capacity than the stocker.
Also, this may be kind of pseudosciency but try putting the battery in the freezer for a few minutes and then popping it right on a charger.

k2buckley said:
Glad to help, and glad you got it going again! What a relief for you! Yea, these batteries don't like to die completely, despite what some people say. The fact is, lithium polymer/lithium ion batteries don't like to be drained to 0. But at least it's just a bad battery. Check on ebay, I've heard good results about some of the cheap ones on there. And best buy also has a 1750mah battery, that is the same physical size as stock, but has a little more juice (stock is 1500mah). Good luck.
Click to expand...
Click to collapse
It's so wierd because my phone was fully charged when I left the house. So unless fastboot drains your battery like "super quick" I am shocked to say the least. I'm willing to try anything with the current battery I have so I might take the advice of "eventer289" and throw it in the freezer and then on the charger. Not sure what I will do yet if I have to purchase another battery but one thing is for sure, my girl is definitely not going to let me keep her battery so whatever I decide I am going to have to do it quick lol. Thanks again for all the advice

Let me know if it works. I've read about the freezer thing to revive lithium ion laptop batteries, so I figure what the hell, give it a shot.

Your battery got to low and that's why it won't charge it, I had the same thing happen to me last week. I just cleaned up my phone using my spare and took it in to sprint with the bad one back in it. They gave me a new one for free.

eventer289 said:
Let me know if it works. I've read about the freezer thing to revive lithium ion laptop batteries, so I figure what the hell, give it a shot.
Click to expand...
Click to collapse
I will let you know for sure. I accidentally left it in the freezer overnight lol. I just pulled it out and put it in the charger. It isn't showing a charge light but I will keep you posted.
xHausx said:
Your battery got to low and that's why it won't charge it, I had the same thing happen to me last week. I just cleaned up my phone using my spare and took it in to sprint with the bad one back in it. They gave me a new one for free.
Click to expand...
Click to collapse
My girls phone isn't rooted. So I might just take hers in with the battery and do this. Not a bad idea at all. Thanks

Update- Have had battery plugged in for four hours now and nothing. So final conclusion is that the battery is shot!!! Sprint, here I come lmao!!

yes.. take it to sprint.. you have 1 yr warranty..
99% sure they will just give you a new battery. if they have one!

Dan330 said:
yes.. take it to sprint.. you have 1 yr warranty..
99% sure they will just give you a new battery. if they have one!
Click to expand...
Click to collapse
That's wha I'm hopin

The problem is, I think in certain modes - such as fastboot, the charging code isn't present. If you leave the device unattended, it drains and drains, even if plugged in (notice no charge light in recovery mode either, when plugged in). As stated, if the voltage falls too low, it won't accept a charge. There's probably some way of reviving the battery, but why bother. Hopefully the OP learned his lesson.

Lithium chargers have a built in safety that will check for minimum voltage before attempting to charge the battery. The EVO has this safety mechanism built in. The method to bring the battery back is to charge it in a dumb charger until the voltage reaches high enough for the EVO to recognize it as a proper battery and then charge it. I've never had to do this on a mobile battery but have done it a few times on Lithium Polymer packs for R/C planes. Some cheap Chinese chargers don't check voltage before charging. You could try jumping the terminals from a good pack to the dead pack for a few minutes being careful to jump the exact same terminal on both batteries. It's worth a shot. Excessive discharge can ruin the battery life going forward but you won't really know until you try. I would monitor both packs for excessive heat just in case but in all likelihood you'll be fine connecting them for a few minutes to boost the voltage on the dead pack. You can always get a two pack of batteries and an external charger on eBay for around $20.

^^^^ good info.. on why it is not taking a charge

Probably should change the topic now since this has nothing to do with fastboot. Simply having cmd open with stuff typed in it won't do anything to your phone.

gpz1100 said:
The problem is, I think in certain modes - such as fastboot, the charging code isn't present. If you leave the device unattended, it drains and drains, even if plugged in (notice no charge light in recovery mode either, when plugged in). As stated, if the voltage falls too low, it won't accept a charge. There's probably some way of reviving the battery, but why bother. Hopefully the OP learned his lesson.
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Oh believe me I have learned my lesson lol.
ENCXBG1 said:
Lithium chargers have a built in safety that will check for minimum voltage before attempting to charge the battery. The EVO has this safety mechanism built in. The method to bring the battery back is to charge it in a dumb charger until the voltage reaches high enough for the EVO to recognize it as a proper battery and then charge it. I've never had to do this on a mobile battery but have done it a few times on Lithium Polymer packs for R/C planes. Some cheap Chinese chargers don't check voltage before charging. You could try jumping the terminals from a good pack to the dead pack for a few minutes being careful to jump the exact same terminal on both batteries. It's worth a shot. Excessive discharge can ruin the battery life going forward but you won't really know until you try. I would monitor both packs for excessive heat just in case but in all likelihood you'll be fine connecting them for a few minutes to boost the voltage on the dead pack. You can always get a two pack of batteries and an external charger on eBay for around $20.
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Definitely good advice. I'll have to try this for sure
sirmx said:
Probably should change the topic now since this has nothing to do with fastboot. Simply having cmd open with stuff typed in it won't do anything to your phone.
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I didn't think it did but I like I said in the OP I was so shocked to see this had happened when I came home that I really wasn't going to rule anything out.

Source for GOOD batteries?

I'm getting pissed with all the POS oem batteries for the S3 these days. Is going to Samsung direct my only option to get a GENUINE one? I don't see where they sell them and I don't trust eBay based on experience.

I know you can get them at Office Depot. Or you could at least, several months ago.
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voidcomp said:
I'm getting pissed with all the POS oem batteries for the S3 these days. Is going to Samsung direct my only option to get a GENUINE one? I don't see where they sell them and I don't trust eBay based on experience.
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Pick up some Anker 2200s on Amazon or similar store.
Who cares if battery is OEM? Just get one from a reputable company.

Aerowinder said:
Pick up some Anker 2200s on Amazon or similar store.
Who cares if battery is OEM? Just get one from a reputable company.
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I care. My experience with oem batteries has been miserable like many others.

voidcomp said:
I care. My experience with oem batteries has been miserable like many others.
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Then don't buy an OEM battery. Buy Anker instead.

voidcomp said:
I care. My experience with oem batteries has been miserable like many others.
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Zero Lemon is another good brand. Try this Amazon Link.

Aerowinder said:
Then don't buy an OEM battery. Buy Anker instead.
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Tried them. They suck just like the others. The contacts on Ankers wear out more quickly too.

DocHoliday77 said:
I know you can get them at Office Depot. Or you could at least, several months ago.
Sent from my SGH-T999 using Tapatalk
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Great I'll look into it.

Are you certain your issues are the batteries and not your setup and use of your device?
There are lots of things that can lead to miserable battery life even on the most solid of batteries.
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DocHoliday77 said:
Are you certain your issues are the batteries and not your setup and use of your device?
There are lots of things that can lead to miserable battery life even on the most solid of batteries.
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Yes I'm certain. The genuine Samsung battery lasts much longer than the poor ones.

voidcomp said:
Yes I'm certain. The genuine Samsung battery lasts much longer than the poor ones.
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I don't think that was Doc's question. I think he wanted to know if you are experiencing poor battery life due to the batteries or some issue with android setup that's causing immense drain ?

Perseus71 said:
I don't think that was Doc's question. I think he wanted to know if you are experiencing poor battery life due to the batteries or some issue with android setup that's causing immense drain ?
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I guess I'm confused. If the same phone is used in a manner consistent with whatever battery is used, what else could the explanation be?

voidcomp said:
I guess I'm confused. If the same phone is used in a manner consistent with whatever battery is used, what else could the explanation be?
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Basically, you started down this path due to a drain on the Stock Battery right ? Would you be able to shed some light on that ?

Perseus71 said:
Basically, you started down this path due to a drain on the Stock Battery right ? Would you be able to shed some light on that ?
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Sure. Brand new phone just purchased. Very few programs installed. Battery used was purchased off eBay. When indicator light showed fully charged I unplugged. Battery remaining went immediately from 100% to 88%. After 6 hours of light use, battery was already down to 40%. Within 20 minutes it fell off the cliff and phone turned off ... basically fully discharged.
Next, stock battery installed. 1 day 12 hours later battery still shows 55% remaining.

voidcomp said:
Sure. Brand new phone just purchased. Very few programs installed. Battery used was purchased off eBay. When indicator light showed fully charged I unplugged. Battery remaining went immediately from 100% to 88%. After 6 hours of light use, battery was already down to 40%. Within 20 minutes it fell off the cliff and phone turned off ... basically fully discharged.
Next, stock battery installed. 1 day 12 hours later battery still shows 55% remaining.
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In that case I'd recommend Monster ZeroLemon 7000 MAh again.People here on XDA have really tried to suck every drop of juice out of it. It had stood all that abuse very well. Buy it from Amazon so you have solid Return Policy in case of trouble.

Perseus71 said:
In that case I'd recommend Monster ZeroLemon 7000 MAh again.People here on XDA have really tried to suck every drop of juice out of it. It had stood all that abuse very well. Buy it from Amazon so you have solid Return Policy in case of trouble.
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Thanks, I'll seriously consider it though the added thickness is a concern. If I could get 2 extra batteries close to the performance of the stock battery and at a combined price close to the ZeroLemon I would be satisfied.
How long does it typically take to charge one of those monsters?

voidcomp said:
Thanks, I'll seriously consider it though the added thickness is a concern. If I could get 2 extra batteries close to the performance of the stock battery and at a combined price close to the ZeroLemon I would be satisfied.
How long does it typically take to charge one of those monsters?
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I don't think their form factor would have issues with the SIII's casing.
I do believe they take roughly 4 hours or so with Samsung's original Charger. I don't have one myself so I have second hand information. It is true that if you have a Fast Charge Kernel, this is further reduced. I am guessing, if you charge off of a PC, of course it will practically take forever to finish :laugh:
My 1 year old stock battery goes me 3 days if on Standby all the time.It will last 1 & 1/2 to 2 days if I use conservatively.

Just fyi, fast charge kernels only make a difference when plugged into a PC and maybe a DC (car) outlet. And correct that the batteries should be the same size and ought to work fine. Only real thing to make note of is if you use any NFC features make sure the battery you get has this capability.
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DocHoliday77 said:
Just fyi, fast charge kernels only make a difference when plugged into a PC and maybe a DC (car) outlet. And correct that the batteries should be the same size and ought to work fine. Only real thing to make note of is if you use any NFC features make sure the battery you get has this capability.
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Bit OT here, but my regular Kernel KT747, now (in recent version) has special code for the 11th pin of the MHT port. So I am given to understand the Fast Charge thus implemented actually affects the way it charges off wall. I am testing since yesterday.

The theory behind fast charge kernels is that when you plug into a PC it detects the data connection and limits charging to 500ma or so. Fast charge kernels allow you to disable the data connection, thereby fooling it into thinking it's plugged into a normal charger and bypassing that limit.
The extra pins don't have anything to do with charging. Only 4 of them do. Before fast charge kernels were introduced people would sometimes short two of the wires in the connector (usually with solder) to accomplish the same thing.
As I understand it the 11 pins are just used with the MHL adapter for HD output. They don't have anything to do with charging. Otherwise a basic USB cable probably wouldn't even work.
I believe there are a few in depth write-ups about fast charge kernels here on xda if you want to search for more info on it.
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