FENIX ARB-L21 4000P High Draw 21700 LI-ION Rechargeable Battery

The Fenix ARB-L21-4000P is a High Capacity / High Draw 21700 Li-ion rechargeable battery with a protection circuit in the anode to help prevent short circuits, over charge/discharge and over heating. The battery also includes pressure relief vents which expel waste gas in the rare case of an internal short circuit. This 4000P battery allows a high output flashlight like the LR35R to have its turbo setting of 10000 lumens to maintain it’s output by maintaining higher voltage for longer periods of a batteries charge.