Weltool INR21-40P 21700 Battery – 4000mAh 40A High-Drain Rechargeable Li-ion Reverse Tanto It runs on the included

It runs on the included ACEBEAM 14500 USB-C rechargeable battery and also accepts any standard AA alkaline or NiMH battery as a backup power source

There's nothing like it

Please note that there are two versions of this light

Assorted colors for all 30 cm (12 in) and 60 cm (24 in) Runners Ink Blue for 120 cm (48 in) Runners

Ci2 can reach a maximum charging current of 3000mA which triples the charging speed thanks to the upgrade to USB-C input

Weltool INR21-40P 21700 Battery – 4000mAh 40A High-Drain Rechargeable Li-ion Reverse Tanto It runs on the includedWeltool INR21 40P 21700 Battery The Weltool INR21 40P (INR21 40P) is a 21700 rechargeable battery engineered for high performance flashlights and demanding electronic devices. With a 4000mAh capacity and a 40A maximum discharge, this high drain Li ion cell delivers stable, long lasting power for high output and tactical lights. Low internal resistance and a compact 70g build make it a dependable choice for enthusiasts. Highlights 4000mAh capacity