My question battery is bad?

[Bustry]

Hello, since my notebook Acer AS11B5E,17 “the screen has fallen, I do not look at the demonstration nearly, if I connect it the exterior monitor, all demonstrated that I carry on me through each method to know (FN + F8, from control panel hand regulation) futile effort, integrates on display monitor's darkness, I am waiting for in this aspect advantages opinion, if my question battery is bad
.http://www.rubattery.com/acer.html

 

[WR2]

Notebook screen stays dark. External/exterior monitor also does not work.

Shine flashlight or hold screen near bright light. Can you see dim display?

If no, probable cause is failed graphics chip on motherboard.