ARB-L21-5000 Rechargeable Battery
ARB-L21-5000 21700 rechargeable Li-ion battery, sufficient power, steady performance, the capacity of the 21700 battery is twice as powerful as the common 18650/2300mAh battery. Which provides the lighting tools with sufficient power and longer duration. Multiple protection, ensure the use safety and good performance of the battery; Steel shell riveting technology, fully protected the battery against damage; Pressure relief vents, rapidly expel internal gas.

Features
New 21700 battery type
5000mAh high capacity
Protection circuitry to prevent short circuits
Pressure vents to prevent explosions
500 charge cycles
Currently compatible with the E35 V3.0, HT18, LR35R, LR50R, PD36R, PD36 TAC, PD40R V2.0, TK16 V2.0, TK20R V2.0, TK22 UE, and TK30.

Specifications
Capacity: 5000mAh
Voltage: 3.6V
Charging Current: Recommended 1A, maximum 5A
Weight: 2.6 ounces (72.5g)
Size: Length: 2.99″ (76mm) Diameter: 0.85″ (21.5mm)