[BUG] Possible workaround to fix battery levels TWRP

[samuraikid0]

Hi there ! I'm much surprised has you :)
Using TWRP Recovery 3.5.0_9-MoRo-1.6 https://www.androidfilehost.com/?fid=17248734326145716182
And Floyd V4

Well this is what i did for fix battery % in TWRP

I installed last bootloader and 8.0 rom from alexndr
https://forum.xda-developers.com/t/rom-g930f-fd-alexndr-u8eti2-devbase-v7-3-encryption-support-oct-20.3592914/unread
https://www.androidfilehost.com/?w=files&flid=251537

I then reboot on TWRP used format factory option, and then install floyd v4 with aroma wipe option and boom % level was fixed

So my guess is that some file from 8.0 was retained ?

(Ignore twrp is orange it is blue screenshot made it orange)

[ananjaser1211]

TWRP does not report battery percentage the same as ROM since galaxy S6. This is because roms use many more nodes to measure estimated % based on battery wear etc. Twrp only reads an old node which will only give the same reading if you calibrate on oreo (because twrp kernel is oreo)

The only battery levels you worry about is the ROM and the offline charge mode.

Your values are identical for now but The more you use the phone the more mismatch they will get untill they stabilize. Usually ~5 to 10% gap. Unless you use twrp kernel that matches the rom for multiple battery cycles

Aside from that this is not related to our #196 bug. That bug is about mismatch from booted rom and offline mode. Which are the actual usable % reported by the kenrel. This bug should be fixed in TWRP

[samuraikid0]

Ok i understand but look 24h after 13h, 14h of moderated use

[samuraikid0]

Still same levels %

Cheers !

[dacili4778]

What happens when you charge 100%? Do you still have 100% in twrp? Because when I get to 100% in the rom, it appears 90% in twrp. I have not tried your method yet but I would like to know if you have already tried.

[samuraikid0]

100 % yep

[NoRRt]

Check New Ver Twrp S7 :
twrp-3.5.1_9-0 S7 Flat
twrp-3.5.1_9-0 S7 edge

[samuraikid0]

Check New Ver Twrp S7 :
twrp-3.5.1_9-0 S7 Flat
twrp-3.5.1_9-0 S7 edge

Nice its fixed with new twrp 3.5.1 9.0

Thanks

[pascua28]

I think the mismatch comes from the outdated battery voltage values present in TWRP's kernel dts since TWRP doesn't need an updated kernel and Samsung usually updates the voltage values.

[Pr0b3]

battery levels when charging during phone was turn off = battery levels on twrp mode ≠ battery levels on OneUI

I don't think the mismatch comes from recovery. Perhaps this is just a feature of OneUI