I bought Surface Pro3 in Mar. 4th 2015, and Warranty was expired in Mar.4th 2016. But As you can see the battery wearing status as below, Battery extremely start wearing from the end of Feburary (In Warranty Period). And I just call service center to complain this after the warranty period. But they refuse to fix it with free charge. Charging Cycle is just 123cycle and I think that it is really surprise. Battery wearing just start from the terminate warranty.