So on tuesday i went to buy hp folio 9470m recently i notice sometimes sum keyboard don't respond (a ,s,d,k,l ), and i notice once it get to 20sumtin% and it just turn off by it self it doesn't even go down to 15% or 10% please help me guys.

For the battery just buy a new one for that old one maybe faulty if it’s not the battery, it should be from the motherboard.

For the keyboard: It maybe dusty so it might have affected some of the keys, if not replace it.

Thanks and good luck