How to change your battery capacity

Yamaha169

Senior Member
Mar 6, 2016
207
62
0
This will allow you to change the MAH inside of settings ... of your battery.
(Must be rooted)
DIRECTORY: /etc/floating_feature.xml
Scroll down until you see the capacity value ...
Once found .. change the value to your new battery value.
(See images for details) (images will show you about how far down you need to scroll to find the string for editing..


I bought an aftermarket 4200mah battery.. stock size is 3600.
Which was the reason for this . Post.. hours and hours of research...
 

Attachments

Last edited:

Rapier

Recognized Contributor
Jun 23, 2008
5,158
2,566
253
Bucharest
Theoretically, to make use of a larger capacity battery or else it'll show the same stock capacity regardless of it's real capacity.
Now I don't know how it is For S7/Edge or Samsung devices but I previously owned several HTC devices. The last I had was One S and it could accomodate the battery from One XL (same size but bigger capacity). Many have tried and replaced it but even the new capacity was shown correctly, phone wasn't using it at full. After researches it came out that, for effectively using a bigger capacity battery it was needed a new kernel compiled to make use of the new battery capacity.

My point is that, you might need that as well here and I really doubt that anyone can compile from source a kernel for Exynos that can contain such changes as I know that sources are proprietary not open. You might fit a bigger capacity battery but it could be that you won't benefit from it's increased size

Sent from nowhere over the air...
 
  • Like
Reactions: kuppenhorst

Yamaha169

Senior Member
Mar 6, 2016
207
62
0
I agree

Theoretically, to make use of a larger capacity battery or else it'll show the same stock capacity regardless of it's real capacity.
Now I don't know how it is For S7/Edge or Samsung devices but I previously owned several HTC devices. The last I had was One S and it could accomodate the battery from One XL (same size but bigger capacity). Many have tried and replaced it but even the new capacity was shown correctly, phone wasn't using it at full. After researches it came out that, for effectively using a bigger capacity battery it was needed a new kernel compiled to make use of the new battery capacity.

My point is that, you might need that as well here and I really doubt that anyone can compile from source a kernel for Exynos that can contain such changes as I know that sources are proprietary not open. You might fit a bigger capacity battery but it could be that you won't benefit from it's increased size

Sent from nowhere over the air...
There are reference files in the kernel ... which i have found about battery capacity... they are based off of a capacity %
Basically an of/if command ... so in theory... i would assume a system edit might suffice ?

Ive also changed the reference in framework-res.apk
By decompiling ... editing ... and recompiling and flashing alterd
Version of it...
The file inside of framework-res res/xml/power_profile.xml
Also referenced a 3600mah battery ...

If i need to recompile a new kernel... im willing to do so as well ;)

And the purpose of this is of course... an aftermarket , fully synced , and properly programmed battery at 4200mah ;)
To track all stats natively in android roms...

Any ideas where i should look in the kernel ..? To maybe find battery capacity values that need changed?
 
Last edited:

Yamaha169

Senior Member
Mar 6, 2016
207
62
0
I think its doing pretty decent for battery life...

I use my device pretty heavy with this 4200 mah...
Background youtube, pandora, games, etc...
Stock S7 edge kernel/boot.img , modified build.prop (TeKHd Rom)
Also calibrated battery after changing the capacity values

But heres a battery life report...
 

Attachments

  • Like
Reactions: krockky

Vivacity

Senior Member
Feb 7, 2013
377
94
0
I use my device pretty heavy with this 4200 mah...
Background youtube, pandora, games, etc...
Stock S7 edge kernel/boot.img , modified build.prop (TeKHd Rom)
Also calibrated battery after changing the capacity values

But heres a battery life report...
omg how the hell did you manage to change for a bigger battery? can you explain? how and which one you bought? any links? :D
 

Yamaha169

Senior Member
Mar 6, 2016
207
62
0
omg how the hell did you manage to change for a bigger battery? can you explain? how and which one you bought? any links? :D

The guide to do so is explain in the images/ guide earlier in these pages...
The link to buy a battery like mine is

http://m.ebay.com/itm/4200mAh-High-...470195?hash=item4b05e571f3:g:jxsAAOSw9NdXqR3o

You will also need tools to do so... (watch youtube for a guide on the hardware change)

Once you have your battery installed... you need to be rooted to make the edits... there are two references you need to change (in images i posted)

After the edits... run your battery 99% dead... do a calibration (apk on app store can do this)

Then let it die.. charge it to 100% while the device is off
 

anaya1213

Senior Member
Nov 20, 2010
387
106
0
Ft Myers Beach
The guide to do so is explain in the images/ guide earlier in these pages...
The link to buy a battery like mine is

http://m.ebay.com/itm/4200mAh-High-...470195?hash=item4b05e571f3:g:jxsAAOSw9NdXqR3o

You will also need tools to do so... (watch youtube for a guide on the hardware change)

Once you have your battery installed... you need to be rooted to make the edits... there are two references you need to change (in images i posted)

After the edits... run your battery 99% dead... do a calibration (apk on app store can do this)

Then let it die.. charge it to 100% while the device is off
But can you really trust a 4200mah for 15 dollars?
 

Yamaha169

Senior Member
Mar 6, 2016
207
62
0
Trust

But can you really trust a 4200mah for 15 dollars?
This is my second time purchasing the same aftermarket battery... first time I installed it into a G928A (s6 edge plus)

Now ive installed it in this device... ive gone several months without seeing charge/discharge loss...

But heres the next question... say... you go through 2 batteries a year... 15$ each....

Would that not be worth the extra phone on time anyways? :)
 
  • Like
Reactions: anaya1213

anaya1213

Senior Member
Nov 20, 2010
387
106
0
Ft Myers Beach
This is my second time purchasing the same aftermarket battery... first time I installed it into a G928A (s6 edge plus)

Now ive installed it in this device... ive gone several months without seeing charge/discharge loss...

But heres the next question... say... you go through 2 batteries a year... 15$ each....

Would that not be worth the extra phone on time anyways? :)
Fair enough, but how do you really know it's 4200mah instead of the regular 3600mah?
 

Eezay

Senior Member
Sep 6, 2008
303
40
0
Stuttgart
After the Note 7 fiasco, people tend to be more careful about aftermarket batteries.

My question regarding this modification ist: Is the phone still waterproof after opening the case?
i guess no...
 

ingram10

Senior Member
Jan 18, 2011
170
51
58
After the Note 7 fiasco, people tend to be more careful about aftermarket batteries.

My question regarding this modification ist: Is the phone still waterproof after opening the case?
i guess no...
I would guess no also, as the glue sealing everything together is disturbed
 

Yamaha169

Senior Member
Mar 6, 2016
207
62
0
After the Note 7 fiasco, people tend to be more careful about aftermarket batteries.

My question regarding this modification ist: Is the phone still waterproof after opening the case?
i guess no...
Any battery lithium... copper core... can overheat and cause what happened to the 7 line...

And this device claims to be water "resistant" ... but people were testing new units and ruining cameras... so...

I went with a ghostek atomic 2.0 case ... ;)
 

Yamaha169

Senior Member
Mar 6, 2016
207
62
0
Agreed... no matter how good you cut the adhesive

I would guess no also, as the glue sealing everything together is disturbed
They do make the adheasive with backglass replacement... but im content with my device ...

Longer batter... no overheating issues (2nd phone using them)
After doing the edits and the battery swap with the battery sync... ive noticed a much bigger gain...

So if it comes to burning my phone down and replacements...
Ill buy the 15$ battery again... and again... and again... ;)
 
  • Like
Reactions: krockky

Yamaha169

Senior Member
Mar 6, 2016
207
62
0
Update...

Batterylife update... this was with 6 hours of wifi tethering and INTENSE bandwidth usage ... (Xbox live, and 5 other devices connected and running at the same time)
Screen on time does adversely affect battery life though... it will nearly double %hr usage ... but i havent seen above 12%/hr battery drain unless screen on time is constant and heavily used...
 

Attachments

twinko

Senior Member
Jan 6, 2014
298
99
0
Berlin
The guide to do so is explain in the images/ guide earlier in these pages...
The link to buy a battery like mine is

http://m.ebay.com/itm/4200mAh-High-...470195?hash=item4b05e571f3:g:jxsAAOSw9NdXqR3o

You will also need tools to do so... (watch youtube for a guide on the hardware change)

Once you have your battery installed... you need to be rooted to make the edits... there are two references you need to change (in images i posted)

After the edits... run your battery 99% dead... do a calibration (apk on app store can do this)

Then let it die.. charge it to 100% while the device is off
Did you even found bigger aftermarket batteries? And did you ever tried to test the battery and his capacity before implementing them? I often have the feeling they are faking the written numbers on it
 

Yamaha169

Senior Member
Mar 6, 2016
207
62
0
Did you even found bigger aftermarket batteries? And did you ever tried to test the battery and his capacity before implementing them? I often have the feeling they are faking the written numbers on it
Well, to me... thats arguing a moot point...
Thats like asking me how i know im getting a gallon of gas at the pump.
But... the evidence is in the calculation of the user ... because there are FAR too many variables ...

There are applications that track power loss by MAH (mili-amp hour) if you use over the stock MAH rating... it would have a larger storage capacity.

Or you can break out ohms law and calculate power , disect this battery and beat your head against a post .. :)
 

twinko

Senior Member
Jan 6, 2014
298
99
0
Berlin
Well, to me... thats arguing a moot point...
Thats like asking me how i know im getting a gallon of gas at the pump.
But... the evidence is in the calculation of the user ... because there are FAR too many variables ...

There are applications that track power loss by MAH (mili-amp hour) if you use over the stock MAH rating... it would have a larger storage capacity.

Or you can break out ohms law and calculate power , disect this battery and beat your head against a post .. :)
im sorry my english isn't that good but i think the capacity of this battery is not related to the user nor there are many variables.
Probably i didnt used the right words but what i was asking for is for example:
Connect the battery to a constant current load and measure the time it takes to discharge the battery to a certain voltage.
Capacity in Ah = Current in Amperes * Time in hours​

that would give a good overview of the real capacity without using a fishy app or harassing a post ;)
 

Yamaha169

Senior Member
Mar 6, 2016
207
62
0
im sorry my english isn't that good but i think the capacity of this battery is not related to the user nor there are many variables.
Probably i didnt used the right words but what i was asking for is for example:
Connect the battery to a constant current load and measure the time it takes to discharge the battery to a certain voltage.
Capacity in Ah = Current in Amperes * Time in hours​

that would give a good overview of the real capacity without using a fishy app or harassing a post ;)

Your right , capacity itself isnt tied to the user, but let say a user testing this increase is using a different rom than your own, one draw will be faster than the other...
Ohms laws involves constant variables,
A running android devices throws 100 processes in the mix...

So to RIGHTFULLY test this battery, yes... a removal and ohms law would be the best confirmation... (im not pulling my battery for everyone elses giddys tho)

If it comes down to having to buy another one... then yea.. ill run that test ..
 
  • Like
Reactions: twinko