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Root Help - Larger battery, need to have system recognize it.

B

BJWTech

Lurker
Hello,

First of all, thanks to anyone williing to help me out here.

Ok, so my EVO-4g is over a year old. The battery (which was never too great in the beginning) is useless now. So I got an aftermarket battery of a larger capacity (3500mah).

I have attempted to fully charge it with the power on/off cycling method. Of course I have no idea if it is fully charged because the system thinks i have a 1500mah battery installed. Is there a file I can edit that tells the system I have a 3500mah battery installed?

I installed "System Monitor" fropm the app store and when I go into the info screen there is this one line: file full_bat: 1500000. Where is that file? Can I edit it directly (rooted phone)?

Anyones help here would be greatly appreciated. I want to make sure that I fully cycle this new battery 5 times or so to ensure I get the most out of it.

Thanks again!

BJWTech
 
BJWTech said:
Hello,

First of all, thanks to anyone williing to help me out here.

Ok, so my EVO-4g is over a year old. The battery (which was never too great in the beginning) is useless now. So I got an aftermarket battery of a larger capacity (3500mah).

I have attempted to fully charge it with the power on/off cycling method. Of course I have no idea if it is fully charged because the system thinks i have a 1500mah battery installed. Is there a file I can edit that tells the system I have a 3500mah battery installed?

I installed "System Monitor" fropm the app store and when I go into the info screen there is this one line: file full_bat: 1500000. Where is that file? Can I edit it directly (rooted phone)?

Anyones help here would be greatly appreciated. I want to make sure that I fully cycle this new battery 5 times or so to ensure I get the most out of it.

Thanks again!

BJWTech
Click to expand...
welcome to the fourms!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
go into recovery and wipe battery stats. also use this app:[APP] Battery Calibration - EASIEST WAY! - Version 1.2 (10th April, 2011) - xda-developers see if that helps.
 
ocnbrze said:
yes you are correct.
Click to expand...

OK,so jsut so I am doing this right. I already wiped the battery stats, but "System Monitor" still shows that line; file full_bat: 1500000. Also, after wiping, the bower bar and stats stayed the same. IE, still showed the same amount of batt % remaining. So did wiping that do anything at all?

At any rate, now that I did the first step, I installed the calibration app. I am now charging it w/ the phone on. After it shows fully charged, should I power it off, and then plug it in powered off to charge it more?

After the chargiing, run the app and then do a full drain and a full power charge. Should I power cycle charge it as well? Should I re-calibrate after that?

Sorry to sound so noobish, but I kind of am.... Although I have extensive linux experience...

Thanks again for the help!

(currently I have wiped batt stats, installed battery calibration and am now charging it to full.

Thanks!
 
BJWTech said:
OK,so jsut so I am doing this right. I already wiped the battery stats, but "System Monitor" still shows that line; file full_bat: 1500000. Also, after wiping, the bower bar and stats stayed the same. IE, still showed the same amount of batt % remaining. So did wiping that do anything at all?

At any rate, now that I did the first step, I installed the calibration app. I am now charging it w/ the phone on. After it shows fully charged, should I power it off, and then plug it in powered off to charge it more?

After the chargiing, run the app and then do a full drain and a full power charge. Should I power cycle charge it as well? Should I re-calibrate after that?

Sorry to sound so noobish, but I kind of am.... Although I have extensive linux experience...

Thanks again for the help!

(currently I have wiped batt stats, installed battery calibration and am now charging it to full.

Thanks!
Click to expand...

well as far as the app is concern i would go into settings/apps/manage apps/system monitor/wipe data and cache(if any). but i would run your phone all the way down after calibration then fully charge up. that is all that is needed really. no need for that other stuff.

also what kernel are you on? do you use setcpu as well? if so what governor are you using?
 
ocnbrze said:
well as far as the app is concern i would go into settings/apps/manage apps/system monitor/wipe data and cache(if any). but i would run your phone all the way down after calibration then fully charge up. that is all that is needed really. no need for that other stuff.

also what kernel are you on? do you use setcpu as well? if so what governor are you using?
Click to expand...

OK, so this is what is still bothering me. The app shows 4194mV right now and shows as fully charged. But how do I know what mV the 3500mAh battery shoud read when fully charged? It seems like it is still charging to the 1500mAh cap that the phone has on it.

The phone is merely rooted. It has no after market ROM/kernel installed....

Thanks again for the help. Running calibration now.
 
BJWTech said:
OK, so this is what is still bothering me. The app shows 4194mV right now and shows as fully charged. But how do I know what mV the 3500mAh battery shoud read when fully charged? It seems like it is still charging to the 1500mAh cap that the phone has on it.

The phone is merely rooted. It has no after market ROM/kernel installed....

Thanks again for the help. Running calibration now.
Click to expand...

i think that it is that app. i just tried it on my evo and i have a 1800mAh battery in mine and it reads 1500mAh. i also use battery monitor widget as well and it reads the same thing. i really do not use apps like that. for me i use a custom kernel and setcpu. you can use the app to see what is draining your phone if you need to. but i would not stress about it too much.
 
If you get battery moniter widget pro you can't go into the monitering preferences and change the capacity to whatever your battery size is. I had the same problem when i got my extended battery and once I got that app the mV doubled.
 
mteezey said:
If you get battery moniter widget pro you can't go into the monitering preferences and change the capacity to whatever your battery size is. I had the same problem when i got my extended battery and once I got that app the mV doubled.
Click to expand...

thanx for that i never knew that there was a pro version lol. gonna try that now.
 
ocnbrze said:
thanx for that i never knew that there was a pro version lol. gonna try that now.
Click to expand...


Not sure if its worth the five bucks but I do like the widgets. I was just about to post a screenie cause i was kinda suprised when i looked at my phone 23% and still 4830mV
screensot.jpg
 
mteezey said:
everytime i go into the metro store with my new fully flashed sprint evo and i see the sexy guy who works there, i think damn i wanna lick his balls, i would text him if i had his number, but i dont wanna freak him out, cause i dont think he's gay.
:p
Click to expand...

Wow, tmi. :D

Now that you're rooted have you given any thought to a new Rom and kernel?
You've just nipped the tip of the iceberg my friend. With that battery, a custom Rom and kernel teamed with setcpu.... Dood you could probably go a couple of days on one charge seriously.
Plus custom roms are just pure awesomeness! Take a look at MikG in the roms and kernels thread, you won't be disappointed. ;)
 
dustwun77 said:
You can edit it, and spank ur gf... lol
Click to expand...

Thats what happens when i leave the computer open to this page and my girl comes to the computer. kinda funny though im just glad i saw it. Im with you on the mikg all the way. Its the first rom ive fashed that ive been happy with and left it alone. well not totally alone still messing with themes and such. By far my favorite rom.
 
mteezey said:
Not sure if its worth the five bucks but I do like the widgets. I was just about to post a screenie cause i was kinda suprised when i looked at my phone 23% and still 4830mV
View attachment 23955
Click to expand...


Ok we are all confusing things here. Had to recall that whole electicity stuff....

mV (millivolts?) is the load on the battery. IE, how much current it is drawing.
mAh is the milliampere-hour. IE, how much charge the battery has in it.

So obvioulsy a larger capacity battery should have the same voltage drawn from it as compared to a smaller capacity battery. Duh! :)

So where in the heck can I view mAh?? What app can measure it from the battery? Not really interested in a widget necessarily.
 
BJWTech said:
Ok we are all confusing things here. Had to recall that whole electicity stuff....

mV (millivolts?) is the load on the battery. IE, how much current it is drawing.
mAh is the milliampere-hour. IE, how much charge the battery has in it.

So obvioulsy a larger capacity battery should have the same voltage drawn from it as compared to a smaller capacity battery. Duh! :)

So where in the heck can I view mAh?? What app can measure it from the battery? Not really interested in a widget necessarily.
Click to expand...

Yea I realized I had it backward once i posted that screnshot. I'm pretty sure the free version of battery moniter widget you can still edit the capacity.
 
First off, most all the answers above are correct, but they are useless. The EVO has safety factors built in to the Stock ROM and kernel to prevent the stock battery from overcharging. It has a timer of 3 hours installed, so it can not take longer than that to charge a 1500 battery. So, if a 1500 battery takes 2 hours to charge, then a 3500 would take about, 6 to 8 hours right? Well, then the PHONE will not let it charge up all the way.

Also, a battery, ANY battery is fully charged at 4200mV. Some go up to 4210mV or so, but that is about as high as it can get.

Now, how do you fully charge a battery on a stock ROM and kernel? Well, you cant. The only way to get around the safety features is to go to a custom ROM and kernel. Or, you can flash the last Official kernel that came out in July that supposedly allows for trickle charging. I am currently testing that kernel, and so far, it has promise, meaning it does let the battery get up to 4200mV, but then it starts to discharge and does not keep the phone at that level if it is still plugged in.

Other than that, you can flash a Froyo Rom and use Netarchy's SBC kernels, or a ASOP Gingerbread ROM and flash Tiamat SBC kernel to allow for you to be able to fully charge an Extended battery.

Good luck, and i hope the SBC haters will leave you alone long enough for you to figure out what I have stated above to be correct. For example, all things being equal, if it takes a 1500 battery 2 hours to charge, then the minimum time to charge a 3500 battery should mathmatically be no shorter than 5 hours for it to charge, and also if your 1500 battery last you on average 8 hours a days, then a 3500 battery should last you AT LEAST 20 HOURS A DAY. Correct? I would think so.
 
eggsack43 said:
First off, most all the answers above are correct, but they are useless. The EVO has safety factors built in to the Stock ROM and kernel to prevent the stock battery from overcharging. It has a timer of 3 hours installed, so it can not take longer than that to charge a 1500 battery. So, if a 1500 battery takes 2 hours to charge, then a 3500 would take about, 6 to 8 hours right? Well, then the PHONE will not let it charge up all the way.

Also, a battery, ANY battery is fully charged at 4200mV. Some go up to 4210mV or so, but that is about as high as it can get.

Now, how do you fully charge a battery on a stock ROM and kernel? Well, you cant. The only way to get around the safety features is to go to a custom ROM and kernel. Or, you can flash the last Official kernel that came out in July that supposedly allows for trickle charging. I am currently testing that kernel, and so far, it has promise, meaning it does let the battery get up to 4200mV, but then it starts to discharge and does not keep the phone at that level if it is still plugged in.

Other than that, you can flash a Froyo Rom and use Netarchy's SBC kernels, or a ASOP Gingerbread ROM and flash Tiamat SBC kernel to allow for you to be able to fully charge an Extended battery.

Good luck, and i hope the SBC haters will leave you alone long enough for you to figure out what I have stated above to be correct. For example, all things being equal, if it takes a 1500 battery 2 hours to charge, then the minimum time to charge a 3500 battery should mathmatically be no shorter than 5 hours for it to charge, and also if your 1500 battery last you on average 8 hours a days, then a 3500 battery should last you AT LEAST 20 HOURS A DAY. Correct? I would think so.
Click to expand...


I'm not too familiar with the electricity aspects of the phone. One question though since this ROM I just flashed on Saturday has a stock kernel still. And my phone having 23% battery life left with 3690mv or whatever it was in that screenshot. Is that from the sbc kernel I had on my aosp ROM before this that actually had it full. So in a sense kind of tricked it to still charge as high as it does in the three hour period your talking about? Just wondering
 
Well, if you had an SBC kernel before, and flashed a new ROM, then you no longer have that SBC kernel. it would need to be reflashed as well.

the 3690mV is the current that the battery is flowing. I fully charged battery is 4200mV, there is no direction connection between that amount and how much percentage there is left in the battery. An app like Battery Monitor Widget, will give you as much information as anyone would need about their battery status. It shows how many mA are left in a charge and what charge it is flowing at any given point in time. The percentage is a calculation that is WAY, WAY over my head on how it is determined.

Everything I have posted is for non Stock, greater than 1500mA extended batteries. i did notice in some tests I ran with a friends 2000mA battery, that the EVO would fully charge that battery as long as it was not completely dead. It does almost take 3 hours to fully charge a 2000mA battery on a wall HTC charger.
 
I have this problem too. Because I need to find the capacity battery file in the ROM or Kernel.
My phone is Samsung Galaxy Note 3 N9005. And he have a original battery of 3200 mAh. And I bought a battery with 7200 mAh. And when he arrives to 1%, stay for long line in this status and next to off


I need help....
 
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