The ARB-L21-4000P is a power-packed li-ion 21700 battery from Fenix that features a whopping 4,000mAh capacity and 500 charge cycles for your favorite flashlight or electronic device. The 18A max discharge rate is ideal for extremely bright flashlights like the Fenix LR35R searchlight with a 10,000 lumen turbo.

This battery can also handle up ot a 4A charge rate, allowing for lightning-quick recharging with a sufficient charger. Multiple forms of overheat, overcharge, over-discharge, and short circuit protection keep you and your devices safe.

• Voltage 3.6V
• Capacity 4,000mAh
• Charge Cycles 500
• Terminal Button Top
• Protected Yes
• Watt Hours 14.4Wh
• CHARGE & DISCHARGE
• Max (Pulse) Current 18A
• Less than 3 minutes continuous
• Max Continuous Current 10A
• Max Charging Current 4A
• 1A recommended
• DIMENSIONS
• Length 76mm
• Diameter 21.5mm
• Weight 70g