The Nitecore NL1840HP 18650 4000mAh Li-ion battery is a high performance, protected cell. The rechargeable battery has a continuous discharge up to 10A, making it suitable for high drain devices, such as 18650-powered flashlights.

The battery has several internal safety features, including a pressure relief valve protection and a built-in intelligent protective circuit which protects against overcharge, over discharge and short-circuitting. Externally, the battery is equipped with nickel-plated stainless steel protectors and coated with a durable metallic film to guard against abrasion.

Please note: We are unable to accept returned batteries once they have been opened, so please ensure they are the correct cell for your device before ordering. These batteries have a built-in protection and as such, are longer than 65mm - please check the tech spec for dimensions.

Please note all orders for individual batteries without a device are sent via Royal Mail 48 Tracked, and not Royal Mail 24 Tracked or Special Delivery. Due to shipping restrictions, we are unable to send individual batteries to the Outer Hebrides, Scottish Highlands and surrounding areas, Channel Islands and Northern Ireland. Please see our delivery page for further details.