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What batteries work with the Fenix TK16 V2 tactical flashlight?Updated a year ago

The Fenix TK16 V2 can only use either the ARB-L21-5000U 21700 battery (this battery is included with the light) or the ARB-L21-4000P 21700 battery. Due to the APF system, this light is not able to use ARB-L21-5000 21700 battery or other 21700 batteries. 

Fenix Direct Charge batteries (with charging ports built in) can only charge under certain parameters,  We recommend using a single port charger that is around 2 Amps with no more than 10 watts max. Most multi port chargers will not work, this includes computer ports. This is due to interference with the safety circuit in the battery. Samsung and LG are great choices, Apple and Anker for the most part are not.

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