FENIX ARB-L21-4000P At-A-Glance
- Fenix 21700 4000mAh high capacity rechargeable battery
- Designed to be used with Fenix LR35R
- Multiple protections with internal and external safety features
- Built-in overcharge and over-discharge protection to increase battery lifespan
- Designed to last over 500 charge cycles
- 12 month warranty period from purchase date
Included in the Box
- Fenix ARB-L21-4000P Rechargeable Battery
Rechargeable Battery for Fenix LR35R
The Fenix ARB-L21-4000P is a high-performance battery designed to power 21700 high drain devices like your favorite flashlights, lanterns, and more. We love to pair it with Fenix LR35R flashlights!
Fenix 21700 4000mAh Battery
Simply charge the Fenix 21700 battery using the built-in charging feature of the Fenix LR35R or using another compatible battery charger. With built-in overcharging and over-discharge protection, the ARB-L21-4000 is designed to last over 500 charge cycles. A 12 month free warranty period means you will never have to worry about this battery leaving you in the dark.
TECHNICAL SPECIFICATIONS
| Capacity | 4000 mAh |
| Voltage | 3.6 V |
| Charging Current (Recommended) | 1 A |
| Charging Current (Maximum) | 4 A |
| Dimensions | L-2.99" x W-0.85" x H-0.85" |
| Weight | 2.47 oz |
Great experience! 
