The Fenix ARB-L18-4000 Rechargeable Battery is a large capacity battery with 4000mAh of power, ensuring a longer lasting charge. 7A stable output current and excellent thermal performance help you prevent overheating. With multiple protection circuits and pressure vents, it provides added safety and can be charged for up to 500 cycles.
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Capacity:4000mAh Voltage:3.6V Charging Current:2A recommended, 4A maximum Max Output Current:7A Weight:1.94 ounces (55g) Size:Length: 2.72" (69.2mm) Diameter: 0.74" (18.75mm) Warranty Period:12 month from date of purchase
Compatible with all lights using an 18650 size battery.