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Fenix Rechargeable 21700 Li-ion Battery – 5000 mAh
The all-new Li-ion battery provides the voltage and power needed for extended runtime and higher lumen capacities. The ARB-L21 is a high-quality Fenix batteries, including protective circuits inside the anode and up to 500 charging cycles. Also included are the three sets of overheat protection: pressure relief, microporous, and PTC cathodal block.