Nitecore NL1840R 4000mAh USB-C Rechargeable 18650 Battery

Reliable, Long-Lasting PowerThe Nitecore NL1840R USB-C rechargeable battery delivers reliable, long-lasting power for compatible Nitecore products like the UT6 headlamp and other electronic devices. Designed to provide extended runtime between charges, the NL1840R keeps your devices powered longer while reducing the need for frequent recharging. Convenient USB-C ChargingThe built-in USB-C charging port allows you to recharge the NL1840R directly with a USB-C cable, eliminating the need for a separate battery charger. For added convenience, it can also be charged using compatible Nitecore external chargers, including the UMS4, UMS2, Ci4, and Ci2. A built-in charging indicator glows red while charging and turns green when fully charged, making it easy to know when your battery is ready to use. Built-In Safety and DurabilityBuilt for everyday reliability, the NL1840R includes multiple safety features to protect the battery during use and charging. Its built-in safety system helps prevent overcharging, excessive battery drain, and short circuits, while an additional safety feature helps release pressure in the event of a rapid temperature increase. Reinforced metal ends provide extra protection against impacts and corrosion, while a durable outer coating helps prevent scratches and everyday wear. Combining long-lasting performance, convenient charging options, and dependable safety features, the NL1840R is a practical power solution for keeping compatible devices ready when you need them.