The Fenix ARB-L21-5000U is a high-capacity 21700 lithium-ion rechargeable battery, ideal for powering high-lumen flashlights and other devices requiring long run times. The standout feature of this battery is its built-in USB Type-C charging port, which allows for convenient charging without a separate charger, using common wall adapters and USB Type-C cords. It has a 5000mAh capacity, ensuring extensive use between charges. Safety is a priority, with protection circuits in the anode providing overcharge, over-discharge, short circuit, and overheat protection. Additionally, it includes three sets of overheat protection mechanisms: pressure relief valve, microporous PTC cathodal block, and a steel shell for added security. The battery supports a maximum output current of 8A, and it offers up to 500 charging cycles.

Specifications & Features:

Type: Rechargeable 21700 Li-ion Battery
Capacity: 5000mAh
USB Type-C Charging Port
Recharge Cycles: Up to 500
Protection: Overcharge, over-discharge, short circuit, overheat
Overheat Protection: Pressure relief valve, microporous PTC cathodal block
Voltage: 3.6V
Charging Power: USB-A to USB-C, 1A/2A at 10W Max
Maximum Output Current: 8A
Weight: 72.5g
Dimensions: Height: 75.8mm, Diameter: 21.6mm
Note: USB Cable NOT included