The Fenix ARB-L21-4000P is a 21700 li-ion rechargeable battery, designed to support high current applications and is compatible with the Fenix LR35R flashlight. The 3.6V battery has a capacity of 4000mAh, a 18A maximum output current and 10A maximum continuous output current.

The cell features 3 sets of overheat protection including a pressure relief valve, separate microporous protection and PTC cathodal block protection.

General Precautions:

• Do not expose the battery to heat or throw in into water
• Observe the plus (+) and minus (-) marks on the battery and ensure correct use
• Recharge a stored battery every three months to secure maximum performance
• Keep the battery away from children

Please note all orders for individual batteries without a device are sent via Royal Mail 48 Tracked, and not Royal Mail 24 Tracked or Special Delivery. Due to shipping restrictions, we are unable to send power banks to the Outer Hebrides, Scottish Highlands and surrounding areas, Channel Islands and Northern Ireland. Please see our delivery page for further details.