NITECORE battery NL1840HP 4000 mAh, type 18650

Battery type: rechargeable lithium-ion, 18650 format
Capacity: 4000mAh
Nominal voltage: 3.6 V (14.4 Wh)
Continuous discharge current: 10 A
Dimensions: diameter 18.6 mm ± 0.3 mm, length 69.8 mm ± 0.3 mm
Weight: approximately 50 g

The Nitecore NL1840HP is a high-capacity rechargeable 18650 lithium-ion battery designed for demanding portable devices.
With a capacity of 4000mAh and a continuous discharge current of 10A, it reliably powers high-energy devices such as professional flashlights and other equipment used by both professionals and enthusiasts.
Built-in safety features and a durable construction ensure reliable performance even in harsh or wet conditions.

Smart protection system against overcharging, over-discharging, and short circuits
Pressure-regulating valve for increased safety
Nickel-plated stainless steel contacts
Wear-resistant metallic coating
Over 500 full charge cycles
IPX6 waterproof (splash-proof protection)

This battery is ideal for users who need a reliable and long-lasting power source for high-energy devices – whether they are flashlight enthusiasts, outdoor professionals, or those working in challenging conditions.
Perfect for outdoor work, search and rescue operations, industrial use, or any situation requiring a durable and safe rechargeable battery.