What is the best way to store a MacBook battery for long-term health?

Keep your MacBook battery between 20% and 80% for storage. For long-term storage (more than a few weeks), shut it down at around 50% charge in a cool, dry place. Avoid storing it fully charged or dead, as heat is the enemy. For daily use, macOS’s Optimized Battery Charging or apps like AlDente can help limit charge to 80%.