A couple of years ago I had a Macbook Pro (not certain of the generation), and I don't think I ever got more than 3 hours of battery life out of it even when it

A couple of years ago I had a Macbook Pro (not certain of the generation), and I don't think I ever got more than 3 hours of battery life out of it even when it was new. By the end of its life it was usually running for about 90 minutes before needing a recharge. Maybe I just got a crummy battery; dunno.