Fenix ARB-L21-5000 V2 rechargeable 21700 battery. The all-new Li-ion battery provides the voltage and power needed for extended runtime and higher lumen capacities. The ARB-L21 comes with all the bells and whistles of 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. Don't run out of light; pick up a spare 21700 battery today!

THIS BATTERY IS NOT AN 18650, AND IT IS NOT COMPATIBLE WITH 18650 FLASHLIGHTS OR OLDER STYLE CHARGERS. COMPATIBLE CHARGERS ARE THE ARE-A2, AREA4, ARE-D1 OR ARE-D2.

This is not the version of the battery with the direct USB charging.

Specifications

• 500 Recharge Cycles
• 5000 mAh Capacity
• Lithium-ion rechargeable
• Multiple Layers of protection
• Pressure Relief Valve Protection
• Separate Microporous Protection
• PTC Cathodal Protection
• Protection Circuits in the anode
• Overcharge
• Over-discharge
• Short Circuit
• Overheat Protection
• 7.5a Maximum current
• Steel Shell Riveting
• 3.6V
• Charging Current: 1A recommended, 5A Maximum
• Note: Does not include an on-board USB port for direct charging

Size

• Weight: 2.56 Ounces
• Height: 2.99"
• Diameter: 0.85"