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.


• Button-Top Design
• Protective circuit inside the anode
• Multiple protection
• Over-charge protection
• Over-discharge protection
• Overheating protection
• Short-circuit protection
• Charging Current 1A Recommended, 4A Maximum
• Max Output Current – 18A
• Max Continuous Current – 10A
• 500 charging circles


• 12 months from date of purchase


• ARE-A2, ARE-A4, ARE-D1, or ARE-D2

Please Note: This battery is NOT an 18650 battery and it is not compatible with 18650 battery powered lights