Fenix ARB-L21-4000P Rechargeable Battery

ARB-L21-4000P is a high-capacity 21700 Li-ion rechargeable battery built for longer runtimes at higher levels. These 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. Additional features include a protection circuit in the anode to help prevent short circuits, over charge/discharge and over heating. Pressure relief vents which expel waste gas in the rare case of an internal short circuit preventing an explosion.

Important Note: THIS BATTERY IS NOT COMPATIBLE WITH 18650 FLASHLIGHTS OR OLDER STYLE CHARGERS. COMPATIBLE CHARGERS ARE THE ARE-A2, ARE-A4, ARE-D1 OR ARE-D2.

Specifications:

• 21700 battery type
• Protection circuitry to prevent short circuits
• Pressure vents to prevent explosions
• 500 charge cycles
• Capacity: 4000mAh
• Voltage: 3.6V
• Charging Current: Recommended 1A, maximum 4A
• Maximum output current: 18A (less than 3 minutes)
• Maximum continuous output current: 10A
• Weight: 2.5 ounces (70g)
• Size: Length: 2.99″ (76mm) Diameter: 0.85″ (21.5mm)