I bought an ASUS G74SX laptop about a month ago, so far i love it and everything looks alright, one thing i noticed is that my batteries max charge is slowly lowering, nothing too drastic, but i noticed as my windows battery gadget says that my batteries max charge is 77 Wh, yet i checked the battery and it said 74Wh max charge. and the maximum charge i can get is already a bit higher than 74Wh. So my question is, should i worry about this? or is it the normal laptop battery max charge decay rate?