The Nitecore NL1840R 18650 High-Performance USB-C Rechargeable Battery delivers an impressive 4000mAh capacity and a high energy density of 288mWh/g, providing reliable, long-lasting power for a wide range of devices.

The battery can be conveniently recharged using either a USB-C cable or a compatible external charger. An integrated charging indicator provides clear status updates, displaying a solid red light while charging and a solid green light once fully charged.

Designed with safety in mind, the NL1840R incorporates multiple internal protection features, including a pressure relief valve that activates during a rapid temperature rise, as well as a built-in intelligent protection circuit that safeguards against overcharging, over-discharging, and short circuits.

The battery also benefits from robust external protection. Both ends are fitted with nickel-plated stainless steel protectors, offering excellent impact resistance, enhanced electrical conductivity, and oxidation resistance. In addition, a durable metallic coating helps protect the battery from abrasion.

Environmentally conscious and safe to use, the NL1840R is mercury-free, lead-free, and cadmium-free. It is engineered for long-term performance, retaining over 80% of its capacity after 500 charge cycles.

The Nitecore NL1840R is compatible with the following Nitecore chargers: UMS4, UMS2, Ci4, and Ci2.

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.

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.