Apple rates modern MacBook batteries to retain 80% of capacity after 1,000 charge cycles. In practice that's about 4–6 years for typical use — but the spread is huge: identical machines can land anywhere between 3 and 7+ years depending on how they're charged and how hot they run.
1,000 cycles to 80% capacity (current MacBooks), where one cycle means consuming 100% of capacity cumulatively. A commuter using ~50%/day accrues ~180 cycles/year → the cycle budget alone lasts 5+ years. Check your count: battery health & cycle count.
Cycles are only one axis. The other two — time spent at high charge and heat — often dominate. A desk Mac parked at 100%, warm, ages through calendar wear even at near-zero cycles; see is plugged-in-all-the-time bad?. Meanwhile a cool, 40–80%-cycled machine can cruise past year six.
1. Cap everyday charge at ~80%. Removes the highest-voltage stress zone entirely (how). 2. Keep it cool. Ventilation, hard surfaces, out of the sun. 3. Spend fewer watt-hours. Less drain = fewer cycles for the same work — display brightness and background hogs first (fixes).
All three habits fail the same way: humans stop doing them. Battery Autopilot runs them permanently — a self-healing 80% guard, measured power savings that cut drain (and heat), and a full charge timed to your departure — reporting the benefit daily as “+minutes extended”. Prevention that runs itself is prevention that actually happens.
7-day free trial. Charge guarded at 80%, measured power savings, results in “+minutes extended”.
Download free (macOS)If the machine still fits your workflow, usually yes — a battery service costs a fraction of a new Mac. See replacement costs in our guide.
Heat is the real variable. Apple's chargers stay within safe rates; charging in hot environments or under heavy load stresses the cell more than the wattage of the brick.
Neither. Store around 50%, powered off, cool and dry, and top back to ~50% every few months.