Fenix 21700 Rechargeable Li-Ion Battery – 5000 mAh Solid Vintage Military Fatigue Cap CRKT BIWA - Fixed Blade

CRKT BIWA - Fixed Blade Knife with Sheath

Yellow power band

including a new SFT40 LED that allows for a maximum output of 1700 lumens using a rechargeable 18650 battery

Reversible (tip-up/tip-down) pocketclip

System: Gas Blowback

Fenix 21700 Rechargeable Li-Ion Battery – 5000 mAh Solid Vintage Military Fatigue Cap CRKT BIWA - Fixed BladeThis 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