![]() ![]() His MBP has a cycle count of over 800, mine is currently on 93 I just checked, both were bought more or less the same time and both had under 50 cycles when we got them. My one colleague on the other hand will only plug in his when the battery is flat, he will sit working at his desk the entire day with his MBP running on battery power, then plug it in only when he runs out of juice. A1618 Apple Battery for Apple MacBook Pro 15 inch Retina A1398 (Mid 2015) R 2,400.00 R 1,849.99 Apple Battery A1618 for Apple MacBook Pro 15 inch Retina A13 Condition: Brand New Warranty: 6 Months Installation fee: Free TECH SPECIFICATIONS Capacity: 8755mAh Battery Type: 99. iFixit gives Apples new MacBook Air with Retina display a repairability score of three out of 10. Might sound funney to say this, but I for example will plug in my MBP when ever I can, when sitting at my desk at work etc. New MacBook Air Retinas battery is easier to replace: But its still horrible to repair. Alternatively adapt and plug it in more often. It will be a expensive fix, if you really need long battery life as in no access to a charger for long periods, then maybe consider getting a newer MacBook. Is it very bad as in it doesn't hold a charge at all, or is it just not lasting long enough to your liking anymore? I've helped people on 20 Macbooks which had well over 1000 cycles and then the batteries still lasted a good 2 hours or so. 315 is very low, if I remember Apple says they are designed to do something like 800 or 1000 before you'll start to see a serious degrade in performance.
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