Zishan T1 battery display issue

[Libra_Audio]

Guys i have this oddly zishan T1 player and i found base rockbox and rockbox themes that work fine in my oddly player but the only issue i had is the battery display issue, it's always said 64% when full charged but drastically drop so fast in % but it actually uses the exact play time uses about 6-8 hr playtime use in 3.8V 2850mAh, so it really last longer about 3 hours when it drop to 11% - 6% also in setting there is only 500mah max capacity option, so how or where to edit battery display and capacity in rockbock frimware or themes so i can have exact battery use display % thx a lot

[Libra_Audio]

alright guys i've been move this topic to theming section