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Fenix 21700 Li-ion Battery ARB-L21-5000U Rechargeable Battery Button-Top, 5000mAh, 3.6V, 18Wh, Built-In USB Type-C Charging Interface, with Protection Circuit in the Anode

ARB-L21-5000U is a high capacity 21700 Li-ion USB rechargeable battery built for more power and longer runtimes. This battery has its own USB-C charging port for quick/easy charging without the need for a separate charger. 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 5000mAh. 500 charging cycles. -5000mAh high capacity -USB Type-C rechargeable battery -Protection circuitry to prevent short circuits -Pressure vents to prevent explosions -500 charge cycles -Indicator light on battery is red while charging, blue when charged -Currently compatible with the HT18, LR35R, PD36R, PD40R V2.0, TK22 V2.0, TK22 UE, and TK30 This product will only work in those models supporting 21700 batteries. A USB-C charging cord is NOT included. 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 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)