I am really

on the battery acer had provided for the triton 500 laptop. I have it only a few weeks and the battery really stress me up so I just wanna know whether its the battery problem or the charging circuit in the motherboard. So this is my problem. When i fully charged my laptop to 100%, and then i plugged the charger off my laptop it straight away turns to 99% not even a second. Next, when i does heavy gaming, the laptop battery decreases even if it is charging and somethimes the charging indicator is not even light up while i gaming after sometime. When i run battery report it shows that my full charge capacity is more than the delight capacity and how is it even possible? Not only that, sometimes after i off the charger after charged 100%, the battery straight turns to 92% so may i know, is it my battery problem or charging circuit which is the motherboard problem. I really hope that it is the battery problem and not the motherboard