$25.95
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. Battery capacity up to 4000mAh. 500 charging cycles. 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.
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)
Warranty Period: 12 month from date of purchase
Richard S. (verified owner) –
Great back up power.
Will –
Is this a AA battery?
Dianne (store manager) –
No – this is a size 21700 battery, much larger than a AA. The battery that is the equivalent of a AA is the 14500 size. https://www.fenixlighting.com/product/fenix-14500-rechargeable-batteries/
Luke –
What is the difference between this and the arb-l21-5000?
Dianne (store manager) –
The 4000P is designed specifically for the higher settings and to maintain higher outputs more efficiently. Any of the batteries ending in a “P” are meant to be able to produce the higher power levels for a longer period of time.