80% available, charging but disconnect ac and it switches off

[mothekiller]

Hi there I would love some input into my dads laptop btw I have 'good' knowledge on computer systems so don't worry about dimming it down the laptop is a Acer Aspire V5-552 this laptop is 3 years old and recently (2 weeks go) would only indicate a %80 charge it would say charging too but the moment the ac is disconnected from the laptop switches off acting as if there's no batter installed. The battery is a built in li-po with %75 health status obtained using a battery health monitor. System is running windows 10. From my understanding i think that it can read batt charge but has no access to the charge, faulty charging circuit maybe? Or has the battery died?

Any input into this would means a lot to me. Thanks for reading guys

 

[NDDU Julius BSIT]

Hmmm I smell some battery circuitry problems here.... Have your battery checked... or maybe its the battery cell itself that has problems

 

[mothekiller]

Hmmm I smell some battery circuitry problems here.... Have your battery checked... or maybe its the battery cell itself that has problems

Hmm, I'm guessing the same but as far as im concerned theres not much I can do apart from replacing the whole battery unit?