So I've had an 11 in air(2011) for a while, about 5 months and the battery has never been good, but recently its gotten horrible, there are alot of batteries online, but I'm not sure which is the best one to buy, any help is appreciated, thanks!
Always use Apple hardware (battery, etc.,) when having any parts replaced , by the way, apple is the only one that makes those batteries for any Mac laptops.