Please note, Canada Post is over-estimating shipping costs on smaller packages.
Any orders that are overcharged shipping will have the difference refunded. We apologize for any inconvenience.
Due to construction, we will be closed February 20 - February 24.
The Fenix ARB-L21-5000U is a high capacity 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 preventing an explosion.
USB Type-C charging interface
Protective circuit inside the anode
500 charging circles
Please Note: This battery is Not an 18650 battery and it is not compatible with 18650 battery powered lights