: Most used units will have degraded batteries, lasting only 2–3 hours rather than the original 12 hours unless the battery has been recently replaced. Quick Buying Guide
: Ask the seller for the cycle count in the System Report; anything over 1,000 cycles is likely due for a replacement. 2015 MacBook Air :Still Usable in 2025 ? buy macbook air 2015
: Check for "dead pixels" or "staingate" issues common on older panels. : Most used units will have degraded batteries,