Overcharging? - HTC Excalibur

I am scared that my battery will overcharge again! Cause the battery is new I wanna take care of it so it stays new!!! the thing about excalibur is that it tends to overcharge!!! is there application or anything i can do to prevent overcharging?! Thnxx in advance!

It should not be a problem. Do not worry to much about it.

it does happen!!! cause its not a cellphone that says its fully charged and stops charging!! the excalibur juss keeps on charging!!!! thats why my old battery is effy and turns off itself out of nowhere which i hated so much!!

what on gods green earth would make you believe that out of all the phones produced, htc would make 1 that never stops charging? id like to see some data on that to back up your claim. please dont say "a friend who works for so-and-so told me"

Dude it stops charging when the light goes green man on the top. It goes from orange to green (greening meaning that its charged). You can also verify if you look under the topbar with the batter (once the phone is charged the battery turns regular but when the phone is charging there is a USB cord like icon next to the batter or going around the batter, once the phone is charged this icon leaves just showing the battery by itself.

Humm, never get tired of hearing this. Todays Li On batteries cant be "over charged". They are microchip controlled. They cant be damaged due to "undercharging" either, thanks to that wonderful microchip thats installed.
No doubt some CSR (customer support rep) told this person that his battery was damaged due to "over charging" (a standard reply by CSR when they dont understand why a battery wont hold a charge is "it was either overcharged or undercharged to many times").

Dude - read more about Li-on .
There is no way to overcharge it .
The battery life is no so long - 8-12 mounths anyway.

littleclown said:
Dude - read more about Li-on .
There is no way to overcharge it .
The battery life is no so long - 8-12 mounths anyway.
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Haha I was trying to tell him that in more basic simple way lol.

my battery started giving me problems not long ago, just got my 2200mah battery in today to replace it. i had to keep it on house or car charger the entire time else it would power off randomly (usually within 2 minutes idle, less if touching keys)
battery was replacement with replacement dash, stupidly kept the replacement battery instead of my less than a month old one.
as for "overcharging" my dash stayed on the charger that came with the phone, for a week straight (vacation time and lots of video games) and then stopped working, i know lion arent to overcharge, but alot of people have this same issue . chalk it up to a bad battery or well use battery at the end of its rope.

psylink said:
my battery started giving me problems not long ago, just got my 2200mah battery in today to replace it. i had to keep it on house or car charger the entire time else it would power off randomly (usually within 2 minutes idle, less if touching keys)
battery was replacement with replacement dash, stupidly kept the replacement battery instead of my less than a month old one.
as for "overcharging" my dash stayed on the charger that came with the phone, for a week straight (vacation time and lots of video games) and then stopped working, i know lion arent to overcharge, but alot of people have this same issue . chalk it up to a bad battery or well use battery at the end of its rope.
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I've seen quite a few forum references to problems that stemmed from poorly manufactured replacement batteries.

magaleng said:
it does happen!!! cause its not a cellphone that says its fully charged and stops charging!! the excalibur juss keeps on charging!!!! thats why my old battery is effy and turns off itself out of nowhere which i hated so much!!
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Click to collapse
No matter how much you take care of it the battery will last for a maximum of 1800 charges or so. As a lithium battery that means it increases life by 3x over nicad batteries. I have a dash and know 3 other dash owners and not one overcharges. My friend and I had to change our batteries but due to its life cycle and the battery dying a few times. When your phone dies like that generally that means the battery cannot support the same charge capacity and is need of replacement.

These batteries are dirt cheap anyway.
I got a OEM Simplo for .99 on Ebay, plus there are tons of after market ones out there also.
I keep one in my wallet as a backup.

gixxum said:
what on gods green earth would make you believe that out of all the phones produced, htc would make 1 that never stops charging? id like to see some data on that to back up your claim. please dont say "a friend who works for so-and-so told me"
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I know! Not to mention that a lithium ion battery is designed to be more efficient anddesigned not to overcharged when full.

Factory Defect!

Related

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
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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.
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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.
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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
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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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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.
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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.
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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
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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.
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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.
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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.
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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!
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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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.

HTC battery trick for HD7 and possible others

while on charger when the battery is reaching 97% , turn on/off/ the phone
multiple times , each time taking a 2 mins break u will notice the charging takes longer and the percentage is always stuck at 97% - 99%...
another form of bump charging for wp7..basically the phone will take longer to cut off charging at 100%
post yr results here if u saw improved battery life
you will find this quickly damages the long term battery life of your battery
Well that isn't so bad as batteries aren't expensive anymore. Just 12€ or so.
this would probably work for any phone not just HTC but you are basically tricking the phone into over charging the battery which weakens the lifespan of the battery, all for a few extra minutes of battery life, not worth it.
Yea, this is terrible, destructive, downright negligent advice.
Yes, not good. I work with battery chargers and Li battery characteristics and you will actually age and get less capability very shorty doing this so you won't get those extra charge lengths for long (you do this maybe 20 times and you will in worse shape after that than someone just doing normal charge).
Magpir said:
while on charger when the battery is reaching 97% , turn on/off/ the phone
multiple times , each time taking a 2 mins break u will notice the charging takes longer and the percentage is always stuck at 97% - 99%...
another form of bump charging for wp7..basically the phone will take longer to cut off charging at 100%
post yr results here if u saw improved battery life
Click to expand...
Click to collapse
are you kidding me??
I already told him to stop posting bs like this and telling people to damage their batteries this way, this thread should be locked.
N8ter said:
Yea, this is terrible, destructive, downright negligent advice.
Click to expand...
Click to collapse
Hah, this coming from the guy that advocated doing that.
u understand yr cause of concern....this will not wear out the battery faster...unless batteries that u use do not have rapid discharge capabilities eg. Iphone poly battery.
In this case it will wear out the battery faster
basically the battery wears out the same rate as all other batteries...
the cells degradation occurs each time u charge...
and modern batteries do not overcharge...some like HTC batteries will discharge rapidly to 80%
basically u are just charging the remainder of the cells
Quote me where I advocated doing that.
Please do a post search on me and you'll see that we've had this discussion in the Vibrant forums already, where I stated it was dangrous.
What I do advocate is keeping your phone on a charger whenever possible (bump charging).
I do not advocate tricking the phone into overcharging. No one wants a battery to blow up in their face, you know...
Or maybe you're confusing a confirmation of that working with an advocation that it's okay to do it? In that case, your school district obviously failed. It has nothing to do with what I stated on these forums or otherwise.
---------- Post added at 10:17 PM ---------- Previous post was at 10:15 PM ----------
Magpir said:
u understand yr cause of concern....this will not wear out the battery faster...unless batteries that u use do not have rapid discharge capabilities eg. Iphone poly battery.
In this case it will wear out the battery faster
basically the battery wears out the same rate as all other batteries...
the cells degradation occurs each time u charge...
and modern batteries do not overcharge...some like HTC batteries will discharge rapidly to 80%
basically u are just charging the remainder of the cells
Click to expand...
Click to collapse
The issue doesn't come from fear of wearing the battery down. It comes from fear of a device blowing up or catching fire on someone who is overcharging it. There is enough evidence even on youtube of batteries going haywire. This is a risky tactic to achieve basically no noticeable increase in battery life.
The HD7 in a high 3G coverage are (full bars, 3+ Mbps download speeds) gets ~4 hours of battery life under heavy use (mostly browsing, reading Pulse Reader Articles, and checking Social Networks now and then - no Music or video - so really it's only heavy in the fact that the phone didn't sleep a lot, should be called more moderate if anything... Phone shows 67% battery left with 2 hours projected uptime). Overcharging your battery won't change that terrible battery life into good battery life. It'll only make it 5 minutes less terrible.
N8ter said:
Quote me where I advocated doing that.
Please do a post search on me and you'll see that we've had this discussion in the Vibrant forums already, where I stated it was dangrous.
What I do advocate is keeping your phone on a charger whenever possible (bump charging).
I do not advocate tricking the phone into overcharging. No one wants a battery to blow up in their face, you know...
Or maybe you're confusing a confirmation of that working with an advocation that it's okay to do it? In that case, your school district obviously failed. It has nothing to do with what I stated on these forums or otherwise.
---------- Post added at 10:17 PM ---------- Previous post was at 10:15 PM ----------
The issue doesn't come from fear of wearing the battery down. It comes from fear of a device blowing up or catching fire on someone who is overcharging it. There is enough evidence even on youtube of batteries going haywire. This is a risky tactic to achieve basically no noticeable increase in battery life.
The HD7 in a high 3G coverage are (full bars, 3+ Mbps download speeds) gets ~4 hours of battery life under heavy use (mostly browsing, reading Pulse Reader Articles, and checking Social Networks now and then - no Music or video - so really it's only heavy in the fact that the phone didn't sleep a lot, should be called more moderate if anything... Phone shows 67% battery left with 2 hours projected uptime). Overcharging your battery won't change that terrible battery life into good battery life. It'll only make it 5 minutes less terrible.
Click to expand...
Click to collapse
they can only blow up by removing their circuit protection
If you say so
Batteries still overheat, catch fire, and in rare cases blow up. Overcharging them is risky. Yes, it's rare, but would you want to be that 1 in 10,000 case where it does do that, in your pocket or something?
Magpir said:
u understand yr cause of concern....this will not wear out the battery faster...unless batteries that u use do not have rapid discharge capabilities eg. Iphone poly battery.
In this case it will wear out the battery faster
basically the battery wears out the same rate as all other batteries...
the cells degradation occurs each time u charge...
and modern batteries do not overcharge...some like HTC batteries will discharge rapidly to 80%
basically u are just charging the remainder of the cells
Click to expand...
Click to collapse
1.) This will wear out battery faster, why? You are fooling the sensor to charge the battery more.
2.) You can overcharge batteries, don´t know where you found out you can´t. The only good thing is, that the modern phones cut out charing when battery is full and is running on charger (to keed battery charged).
3.) My battery is not rapidly discharged to 80%, I charge it up 100%, and it stays there, when your battery quickly discharges to 80%, that´s your problem from experimenting with charging.
Again - STOP TELLING PEOPLE TO KILL THEIR BATTERIES, I told you numerous times, you always act like you invented something, you didn´t, modern batteries use more advanced techniques to help them prevent from being damaged, overcharged, deeply discharged, etc. So stop telling people how to fool these sensor and stress the battery.
Thank you
Hey guys,
I wouldn't recommend this advice as well.
As for me, I bought a second battery 1600mAh.
I use this battery as my primary battery, now I get 30-40% more time on my HTC HD7, and actually can go a whole day with 2G only. While before the phone dies before the end of the day.
While my original battery I keep fully charged sleeping in my wallet, so if the 1600mAh is fully depleted and I'm away from a charging station, I quickly replace and resume working on my phone. This method gets me through a whole day of work+games+social.
I don't remember the price of the 1600 battery but it costed me 10-15 Euros I think.
I believe this is most practical than carrying an attached battery to your phone which results in a gigantic phone in your hands. Or overcharging the OEM battery and probability of having it blow up.
What do you think guys?
thread should be deleted
knightsoldier said:
thread should be deleted
Click to expand...
Click to collapse
Actually maybe edited and left as a warning for anyone who searches for this method or thinks of doing this method.
Xenohart said:
Hey guys,
I wouldn't recommend this advice as well.
As for me, I bought a second battery 1600mAh.
I use this battery as my primary battery, now I get 30-40% more time on my HTC HD7, and actually can go a whole day with 2G only. While before the phone dies before the end of the day.
While my original battery I keep fully charged sleeping in my wallet, so if the 1600mAh is fully depleted and I'm away from a charging station, I quickly replace and resume working on my phone. This method gets me through a whole day of work+games+social.
I don't remember the price of the 1600 battery but it costed me 10-15 Euros I think.
I believe this is most practical than carrying an attached battery to your phone which results in a gigantic phone in your hands. Or overcharging the OEM battery and probability of having it blow up.
What do you think guys?
Click to expand...
Click to collapse
may u give mroe details about the 1600 mah battery?
brand size and where u bought it??
This is the one I bought:
http://www.ebay.com/itm/1600MAH-HIGH-CAPACITY-BATTERY-REPLACEMENT-HTC-HD7-/130497652694?pt=LH_DefaultDomain_3&hash=item1e624427d6#ht_2154wt_1139
I found similar hits on ebay USA, but the writing on the battery is different (Even though they are the same brand).
You can search ebay yourself for a similar looking battery to the one I posted.
Xenohart said:
This is the one I bought:
http://www.ebay.com/itm/1600MAH-HIGH-CAPACITY-BATTERY-REPLACEMENT-HTC-HD7-/130497652694?pt=LH_DefaultDomain_3&hash=item1e624427d6#ht_2154wt_1139
I found similar hits on ebay USA, but the writing on the battery is different (Even though they are the same brand).
You can search ebay yourself for a similar looking battery to the one I posted.
Click to expand...
Click to collapse
does it really last longer???

Phone abruptly dies under 20% battery

Phone totally goes black/dies when battery is 21% down to 10%. does this just mean the battery I have is bad? What replacement battery is best? I've read Anker makes a good set with charger. Thanks.
Samsung SDI batteries are the only batteries I've known to do this. When screen goes black, that should be a shutdown. Do you plug in your charger at that time? Mine actually actually showed 0%.
It's inconvenient for a battery to shutdown unexpectedly, while showing capacity remaining. I always replace Samsung OEM batteries with another brand. I found one that I liked so l went to Amazon and bought a second plus external charger from same brand. If looking at another alternative, just search MPJ and read the reviews. The battery and wall charger were on sale last week, maybe still.
If you're considering upgrading to sealed battery in unibody phone, you should consider the care required for such a phone to get battery to last. Sealed batteries are actually very similar in capability and ratings; no leap in tech but apparent shortcoming evident in Note7 embarrassment. Fast charging produces heat and steals life from battery's endurance down the road. Studies have shown since lithium batteries have no memory that you're actually prolonging the battery by slow charging without load or minimum load and bump charging rather than cycling battery to near 0% then back to 100%. Manufacturers don't tell you that because they prefer you wear your battery down in less than a year's time and consider another phone purchase.
Maybe Samsung would be better off today if consumers were more aware of how to prolong lithium batteries?
If you want your battery to last two years, bump charge it after 25% used as much as possible; it shouldn't even matter if you bump charge it 3x per day. Avoid fast charging and heat cycles. IOW, try not to use it while charging; the cycles should be short anyway.
Or, if you prefer to abuse a removable battery like the Note 4 and care less, pay about $15 and just replace the battery every year. 500 full cycles is all these batteries are currently rated for due to increased degradation with abuse. Mini cycles allows more of those cycles without degradation but you'll still have capacity when you need it to last a long day without charging.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Sent from my SM-N910P using Tapatalk
Wow thanks for all the information. What does bump charge mean exactly? Now my battery won't charge passed 90% either. A different one is on the way.
Toyeboy said:
Wow thanks for all the information. What does bump charge mean exactly? Now my battery won't charge passed 90% either. A different one is on the way.
Click to expand...
Click to collapse
Try this, if you are rooted and have recovery wipe dalvik cache and cache. Power off phone and pull battery for like 5-10min. Hold the power button (with battery out) for like 1-2min. After letting battery sit out for 5-10min reboot and see what happens. If same instances occur. Your battery is dead just purchase a new one! Anker recommended!
Toyeboy said:
Wow thanks for all the information. What does bump charge mean exactly? Now my battery won't charge passed 90% either. A different one is on the way.
Click to expand...
Click to collapse
You're welcome.
Bump charging is partially charging before battery gets low. An example would be running the battery down 25% and charging without overcharging it.
Sent from my SM-N910P using Tapatalk
Had the same issue, bought a new Anker and issues resolved, the stock Samsung sucks!
I'm just glad there's a way to replace it that'll mean this phone can last a long time if I'm careful with it.
Yeah it must be these batteries. My mom has the Note 4 as well and hers does the same thing. As does mine
g355150 said:
Yeah it must be these batteries. My mom has the Note 4 as well and hers does the same thing. As does mine
Click to expand...
Click to collapse
Yes the stock Samsung batteries are horrible. They don't last very long then they start misrepresenting the battery statistics to the OS so you get the shutdowns at 20 or so %. I switched to a twenty$ Anker I found on Amazon over 6 months ago and never had the issue occur again. Even thy sprint techs will tell you if you ask them outright!
sent from my droid

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