Ответ на "Battery percentage suddenly drops from ~60% to 7%"I think all of the batteries probably come from the same vendor in China. iFixit totally punted on any refund without getting their bad battery back (3+ hours). The problem is if you bring a batteryless MacBook to Apple, they won’t accept it. Shame on iFixit. They know they sent out bad batteries for an extremely difficult repair. Disappointed.