I have a 15" early 2011 MBP. I'm pretty sure my battery was already replaced at one point. My current one is at 98% health and only went through about 43 cycles. Even with an SSD, not getting too hot, etc. my battery is draining rather quickly. Almost 50% down in about 90 minutes. Is something wrong with it or are there other things I can do to make it last even longer? I feel like I used to get 6 to 7 hours with this thing without even trying. Now, not so much.