Replacing the S6 Battery with S7 Edge Battery

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Bamofo666

Member
Oct 25, 2013
34
2
Star Valley
Does anyone have a good source for quality s7e batteries? I have tried a Chinese battery with poor results (2445 of 3600 after 4 cycles). I'm currently awaiting a Chinese 4200mah to try, but I'd really like a quality Samsung battery that reaches at least close to it's rated mah. I see lots of them on eBay, but they all seem to be pulled from overstock phones. They all seem to be a couple of years old as well.
EDIT: Got the 4200 and it was thicker than the s7e battery and only charged to 82% then quit.
I also got a stock s7e battery pulled from an overstock phone (2 years old) for less than $5.00 delivered. On the second charge it reached 3459 of 3600. The winner is clear but I'm still interested in an aftermarket battery that holds it's rated capacity.
 
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Darktitor

Senior Member
May 31, 2012
1,577
908
Does anyone have a good source for quality s7e batteries? I have tried a Chinese battery with poor results (2445 of 3600 after 4 cycles). I'm currently awaiting a Chinese 4200mah to try, but I'd really like a quality Samsung battery that reaches at least close to it's rated mah. I see lots of them on eBay, but they all seem to be pulled from overstock phones. They all seem to be a couple of years old as well.
EDIT: Got the 4200 and it was thicker than the s7e battery and only charged to 82% then quit.
I also got a stock s7e battery pulled from an overstock phone (2 years old) for less than $5.00 delivered. On the second charge it reached 3459 of 3600. The winner is clear but I'm still interested in an aftermarket battery that holds it's rated capacity.

If you live in an European Union country the official Samsung parts distributor : S7 Edge battery for EU

If you live in the US : S7 Edge battery for US
 
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Verismo

Member
Mar 18, 2013
6
0
can anyone confirm or deny that you need to root for this to be effective?

from what im reading, you need to install the kernel and for that, you need to be rooted?

samsung pay is absolutely vital for me so i cant root/remove the nfc
 

Cle barros

New member
Jul 11, 2018
1
0
S7 edge battery vs normal s7

Is it possible to insert a Samsung S7 edge battery into a normal S7?
Will it be compatible?

---------- Post added at 01:11 PM ---------- Previous post was at 12:44 PM ----------

Is it possible connect s7 edge battery in to s7 g930?? Please help!

I don't think. I just looked at the specs for both batteries. They're almost the same but the s7 edge battery is a bit longer

Dimensions
S7 142.4 x 69.6 x 7.9 mm
S7 edge 150.9 x 72.6 x 7.7 mm
 
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G

GuestD2577

Guest
I have S6 with 2550mA battery. Will a S7 Edge battery fit? Do I have to calibrate something or erase phone and start with new battery.
 

roben97

New member
Sep 12, 2018
3
0
You can check out to do so. It is not that hard, although I scratched tha paint from the inside when removing the back - its only cosmetic and not really noticable. If you have the proper tools its not such a big deal - the S7 Edge battery is almost the same size as the original S6 one. Still day 1 with the new battery, but so far it has been 9 hours and barely 25 percent drain. After some charge/discharge cycles it will probably improve even more.
Especially since my original battery had significantly degraded, the difference is night and day.

Why i cant access to your blog?
can you please post it again
 

S6lover

New member
Sep 16, 2018
2
2
Working Process

I have an SM-G920F - with the patch it thinks i have a SM-G925F (An Edge)

This is what I did, I have 5 hours plus of SOT atm.

Buy this:
http://www.batteryupgrade.co.uk/sho...hType=searchByshopGroup#/shopGroupId/99467474
Battery is thin, and doesnt bulge, its also not just a **** battery taken out of a broken Galaxy S7.

You need this:
http://www.batteryupgrade.co.uk/sho...rtmentProductId/92404846/shopGroupId/78168083
and hair dryer.

Follow this tutorial: https://www.youtube.com/watch?v=mfV4CK6KIek

After reassembly:

Download and install Odin and Samsung USB drivers onto PC.

Flash TWRP 3.2 via Odin
Reboot into TWRP via "Recovery": Cold Boot: Hold, Volume up Home and then Power.
Full clean wipe, including System in TWRP.
Copy via USB the 4 files below:
Flash OdexLite and OdexLite Aroma:
https://forum.xda-developers.com/ga...rom-odexlite-rom-920f-920i-925f-925i-t3550706
Flash this battery patch:
https://forum.xda-developers.com/galaxy-s6/development/flashable-zip-s7-edge-battery-patch-t3744726
Flash SuperSU *** Battery Patch will boot loop you without Root, Not mentioned in OP of battery patch.
https://forum.xda-developers.com/apps/supersu/stable-2016-09-01supersu-v2-78-release-t3452703


Reboot, Setup, Put on GSam Battery, Drained 3-4 times so far, looking noice.
I expect average SOT at 5 hours plus.
Ive done this process twice, as I wasnt happy without a completely empty system first time.
 

Harry99710

Member
Jul 30, 2015
28
16
i've just done this mod to my used s6 since it needed a battery change anyway, i've managed to get a whole day of use without charging (was also using it a bit last night). the S7e battery does bulge about >1mm but it still fits fine in it's case so it doesn't bother me.
 

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Teracotta

Senior Member
Jun 26, 2015
317
37
is it necessary to follow @S6lover steps (don't want to do a full wipe) or can we just replace the battery.

You don't have to full wipe, but you need root to delete the batterystats.bin to allow for proper recalibration. I also included battery files from the system and efs folders of the Galaxy S7 edge. Like batterystats.bin they are rewritten but are necessary to ensure fast, accurate calibration.
 
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Teracotta

Senior Member
Jun 26, 2015
317
37

Yes, you should wipe it, as Android makes background decisions based on the stored battery stats. Battery "calibration" is much more complicated than one file. There are files in /system/, /sys/, and efs related to it.

There is even a battery calibration watchdog in the /sys/ folder that will revert all battery statistics if the kernel goes into a panic mode. I have root on the SM-G920A, which has a locked bootloader, and managed to panic the kernel while trying to change these values in /sys/. The result was the phone wouldn't boot until I put in a 2550 mAh battery. How does it know the 3600 mAh battery isn't the right battery? It's something I'm curious about, but I have other priorities to focus on.
 

vanderville

Senior Member
Jun 22, 2012
64
5
I was so happy to read and confirm that s7e battery fits in my S6 i now I have it but still not getting that much battery, I don't know what am I doing wrong, can someone point me in the right direction? I'm in a stock nougat 7.0 firmware, I already tried root calibration methods, please?
 

iamkani

Senior Member
Jul 23, 2013
727
448
Negombo, Sri Lanka
so for S6 which battery is best?
S7 battery or S7edge battery?
some said S7edge battery doesn't OK because s6 back cover not sealing well..
is it true?
 

captainsami

Member
Nov 4, 2018
22
0
so for S6 which battery is best?
S7 battery or S7edge battery?
some said S7edge battery doesn't OK because s6 back cover not sealing well..
is it true?
I think S7 battery is good for s6 as it fits perfectly in the frame and you don't need to force the back glass to fit properly

---------- Post added at 08:25 PM ---------- Previous post was at 08:12 PM ----------

i've just done this mod to my used s6 since it needed a battery change anyway, i've managed to get a whole day of use without charging (was also using it a bit last night). the S7e battery does bulge about >1mm but it still fits fine in it's case so it doesn't bother me.
So is it working fine now?
What are battery stats ?
Is it giving you the desired SOT?
Did you use any kernel?
 

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  • 4
    Hello guys, I realized this mod. First I have to say it is easy task with lot of tools and heater. After battery replace (original new one s7 edge) the back cover doesn't fit like stock, but almost like stock. If you remove NFC/wireless charging tape then back cover fits like stock.

    After few days using my phone I see better battery SoT, but I am not sure if s6 really using whole huge capacity of 3600mAh. I think there is sw/hw limit for battery capacity.
    My s6 stays on 1% battery for 30min Sot, and another 30min in TWRP with 0-1% after android shutted down. When s6 is charged says 1h to full, but really time is almost 2h with black screen.

    I want to try S7 nonedge battery with 3000mAh and I expecting same results like with s7e because limitation. S7 battery is smaller, lightweight and thicker.

    Hope I help.
    4
    That's not quite "almost" the same size, the giant bulge created by the excess battery width is actually quite dangerous. All those exploding phones you see in the news, that's what happens when your battery is too big for the compartment it's in. Especially when charging, as the battery expands by up to 10%.

    Good luck, and be safe.
    Well, they are pretty much the same, really...
    15_battery_comparison.jpg

    16_battery_comparison_thickness.jpg

    As for the "giant bulge"... I would definitely not use these words - as you can see the thickness of the batteries is very similar. I agree of course that this is certainly not 100% safe and of course should be done with full awareness that you are cramming a battery with very chemically reacive metal in a body that was not designed to hold it.

    But don't get me started on the whole "exploding phones" bull**** - the media hysteria for less than 100 incidents from a batch of 2.5 million devices was just ridiculous. On a recent flight the air attendant asked any Note 7 owners to report to the captain... I mean come on... :laugh:
    I am not saying there was no issue with the Note 7 design, but that was just so much overblown, its not even funny.

    Can you update your battery stats ?? i think after lots of calibration you should have a more accurate percantage right? i read on a spanish site that you need to charge the phone at no more then 2% after a week of calibration and never let discharge it complitely! can you share your stats pls?

    I just did the mod yesterday - will update my article after I have several charge/discharge cycles - sometime during the holidays probably.
    Regarding the battery percentage reading, a few words - a battery can't tell how much charge it has left - you can only measure its output voltage. You define 0% charge as the minimum safe voltage under which your circuit can operate. So what Android does is that it creates a table with statistics about voltage readings and estimated charge. So after some cycles from 100% to 0%, this table gives pretty good estimation about your current battery charge in percentage. Switching from one battery to another, means that you need to reset those statistics, to have an accurate estimation. Since the file that holds those statistics is in the system partition, this can be done either via some service menu on some phones, or with an app with root access. So yeah - I did reset my battery stats and am still on the first charge (29 hours since unplugged) so it will take some time before I have some accurate battery stats to show.
    4
    looks different that original, anyway I don't suggest this type of replacement, even if is same voltage charging ic from s6 is design to charge a smaller capacity battery than s7

    Battery percentage <-- Android driver <-- Battery circuit <-- Li-Ion battery voltage sensor

    There is no such thing as phone "designed to charge a smaller battery". At least that is gross oversimplification... As long as the batteries operate on a similar minimum an maximum voltage, the charging "algorithm" will be more or less the same, and they will only take more time to reach the maximum voltage (max capacity) and be able to churn more power before the voltage drops to the minimum allowed ("zero" capacity). The initial configuration of the driver that tells what percentage is a specific voltage reading (i.e. 3.85 V = 75%) is specific not only for the battery model, but also changes over time as the battery degrades, so there is constant self correction of this voltage-to-percentage table, which people refer as "calibrating a battery". So even that S6 is configured initially to expect certain battery model, after deleting the old "calibration data" + some charge/discharge cycles - it adapts to the new battery characteristics.

    So the battery indicator is pretty complicated stuff - we really can't tell how much charge a battery has left, so we approximate it. And pretty well at that, as you all know.
    It is even more nuanced, as for example, when your phone charges to 100% and is plugged in, it stops charging and "lies" to you that it is 100%, when it is silently dropping to the nineties, to minimize battery degradation. Imagine the number of support calls that you will get from angry customers, telling you that their charger/phone is broken and can't charge to maximum. :D
    3
    You can check out my attempt to do so. It is not that hard, although I scratched tha paint from the inside when removing the back - its only cosmetic and not really noticable. If you have the proper tools its not such a big deal - the S7 Edge battery is almost the same size as the original S6 one. Still day 1 with the new battery, but so far it has been 9 hours and barely 25 percent drain. After some charge/discharge cycles it will probably improve even more.
    Especially since my original battery had significantly degraded, the difference is night and day.
    3
    I just did the mod yesterday - will update my article after I have several charge/discharge cycles - sometime during the holidays probably.

    Hey, did you manage to fit the backplate glass with this new battery? I have found a thread on reddit in which the guy states that the battery won't fit (in terms of thickness).
    The guy actually suggest to use S7 battery.
    Could you please post some more photos of modded phone? :)

    Link to the thread:
    https://www.reddit.com/r/GalaxyS6/comments/4vcsct/mod_s7_edge_battery_in_s6/

    Link to the gallery (one of the last photos shows that the glass won't fit):
    http://imgur.com/a/ZKqE6

    EDIT:
    I have just found your blogpost with pictures - it seems to fit much better than in the example from imgur gallery. How is the calibration going?