Fenix ARB-L18-3500 Rechargeable Battery

The Fenix ARB-L18-3500 is a high capacity 18650 Li-ion rechargeable 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 preventing an explosion. Fenix has increased its emphasis on safety by building in features to prevent short circuits and design multiple layers of protection. The new button-top design better accommodates a variety of flashlight brands.