Maintains your MacBook battery health

BatteryBox powers your laptop rather than charging it, keeping the battery at the same charge percentage.



By bypassing the MacBooks built-in battery, BatteryBox minimizes the number of cycles (and stress) on the internal battery, prolonging it's life.

Charging your laptop cycles the built-in battery, degrading it over time and leading to eventual failure. Some energy is also lost and never gets to your laptop as it flows through this more inefficient path.