unplugging battery and went all black

[realmeynnej]

My asus X541N non-removable battery cant open. When i charged it, it works, but when i unpluged the charger it went all black.. What am i going to do?

 

[ElectrO_90]

Your battery is dead as it won't charge any more.
Only works when plugged into mains. You need a new battery.