I have a mid-2012 MBP retina. Just ticked over on 5 years old. The battery is doing ok, 300 cycles and 83% capacity. However, I'm wondering should I get this booked in for a battery replacement now? According to Apple (https://support.apple.com/en-gb/HT201624), vintage/obsolete products are no longer eligible for repair (including batteries). Vintage/obsolete is at any time after 5 years. What would you do?