ARB-L21-5000U Battery

This 21700 battery from Fenix can handle twice the power of a standard 18650 battery. The additional mAh's allow flashlights like the PD36R and TK22 to have longer run times. What makes this 21700 battery even better is the USB Type-C charging port that is embedded in the cell.

You don't have to use a separate charger to charge the battery; it can all be done with a wall adapter and USB Type-C charging cord. It is likely that you already have these in your home since many cellphones use this same type of charging port.

Specifications

• 5000mAh Capacity
• USB Type-C Charging
• 500 Charging Cycles
• Protection Circuits in Anode
• Overcharge Protection
• Over-discharge protection
• Short Circuit Protection
• Overheat protection
• 3 sets of overheat protection
• Pressure relief valve
• Microporous
• PTC Cathodal Block
• 3.6V
• USB Charging - USB-A to USB-C Cable - Single Port Charger 1 Amp/2 Amp at 10 Watts Max
• Maximum Output Current 8A
• Weight: 2.56 oz / 72.5g
• Dimensions: 2.99" Height x 0.85" Diameter