Bought my daughters Macbook Air (2015) model for my youngest son who is going to college. Turns out that the Macbook Air originally had iced tea spilled on it and was dried out and its battery was replaced by my daughter. She bought a new MacBook and sold me this particular Macbook. Well not when you try and plug power cord in the Macbook doesnt seem to hold a charge. I checked the cycles and yes it appears as though the battery is new. Just not sure why the battery is not charging. Left it to charge for 12 hours and it was completely dead. I did the SMC reset to try and fix it but no go. Any other ideas?