Nitecore NL1840 18650 4000mAh rechargeable battery (Nitecore, SKU: NL1840 18650) is a protected 18650-format lithium-ion battery designed for compatible flashlights and other devices. It offers a capacity of 4000 mAh, an energy rating of 14.4 Wh and a continuous discharge current of 5 A. The built-in protection circuit protects the cell against overcharging, over-discharging and short circuits.

Key features

• capacity of 4000 mAh and energy rating of 14.4 Wh
• continuous discharge current of 5 A
• built-in protection circuit
• protection against overcharging, over-discharging and short circuits
• pressure relief valve limiting internal pressure build-up
• nickel-plated stainless steel protectors at both ends of the battery
• durable protection circuit board cover and abrasion-resistant metallic film
• IPX6 water resistance

Included components

• Nitecore NL1840 rechargeable battery

Technical specifications

• manufacturer: Nitecore
• model: NL1840
• type: lithium-ion rechargeable battery
• cell format: 18650
• nominal capacity: 4000 mAh
• nominal voltage: 3.6 V
• energy: 14.4 Wh
• continuous discharge current: 5 A
• length: 69.8 ± 0.3 mm
• diameter: 18.6 ± 0.3 mm
• weight: 50 g
• protection rating: IPX6
• SKU: NL1840 18650

The Nitecore NL1840 provides high capacity and multi-level protection when powering devices compatible with protected 18650 batteries of the specified dimensions.