So I bought a mid-2013 macbook air on craigslist earlier this week and for a machine that is supposedly a year and half old, it is in perfect condition. The machine is immaculate and in system info shows only 2 battery cycles. Either the battery was replaced recently or the original owner never ever used it. Is there any way to see if it was replaced recently or somehow the cycle count was changed? It has a fresh install of Yosemite and the info has not changed.