What is the lifespan on FARO's battery?

The lifespan of FARO's battery is not measured in time (dependent on how you use it) but on full charge cycles.

FARO battery's lifespan is estimated at +500 cycles. Charging once per week, it yields about 9.5 years, well beyond the lifespan of the helmet itself. For reference, smartphone batteries usually last 300--500 cycles.

However, the FARO battery's lifespan is estimated at +500 cycles. Charging twice or thrice per week, it yields about 3.5-5 years, just the same as the lifespan of the helmet itself. For reference, smartphone batteries usually last 300-500 cycles. This means that the lifespan of the batteries and the lifespan of the helmet itself are synced - which is great news from a sustainable point of view.