For a few weeks/maybe a month or two, my Macbook cannot hold a charge. iStat Pro says the battery health is 74%, Ive had it for a bit over a year. And, earlier today, my Macbook crashed half an hour into watching a video whilst being powered by the battery which was at 84%. So. Im thinking, it MUST be something else. Power up, less than a minute in, it crashes again, and again. Do I call Apple? Do I buy a new battery? And I should not have to do that. There's obviously something wrong. If someone could give me some advice, especially if theyve been involved in a similar situation, it would be greatly appreciated. Thanks.