​Fenix FL-ARB-L21-5000U Rechargeable Li-ion Battery – 5000 mAh,

Fenix FL-ARB-L21-5000U Rechargeable Li-ion Battery – 5000 mAh, USB Direct Charging, Overcharge Protection

The Fenix FL-ARB-L21-5000U is a high-capacity 21700 Li-ion rechargeable battery designed for extended runtime and reliable performance. It features a built-in USB charging port, allowing direct charging without a separate charger.

The integrated overcharge and overheat protection ensures safety and long service life. With no memory effect, the battery can be charged at any time without reducing its performance. Ideal for use with Fenix flashlights and headlamps supporting 21700 batteries.

Technical data

• Model: FL-ARB-L21-5000U
• Type: Li-ion rechargeable battery
• Voltage: 3.6 V
• Capacity: 5000 mAh
• Protection: overcharge & overheat
• Memory effect: none
• Charging: USB direct charge (built-in port)
• Compatibility: Fenix 21700 flashlights