Hello, i have this problem too... i change lcd for some OEM lcd and not work touch, now i make update 11.3.1 and touch work... but battery is still 0% and not showing the charging bold... when i connect to charger come first few seconds +/- 1100mA, after strarting OS come down on 200-380mA.... i inspect the board and like 2mm from battery connector missing one small part looks like capacitor etc.... i think this is the ptoblem.... can you tell me some good man what is the part? :)