I got my keyboard yesterday and it's battery was %51. I charged it like 4 hours (2 hours with my phone charger, 2 hours with laptop via original cable). But it went up to %81. In armoury software it shows fully charged battery image but says %81 charged. I've been playing like 30mins, and i checked the battery it shows %82? Is it normal that with 4 hours charges %30 ?
