The NL1834R battery can be connected and charged directly using a USB charging cable at the integrated micro-USB port. The battery can also be charged in a separate charger and is compatible with Nitecore chargers from the Intellicharger series, Digicharger series, UM series, and Superb Charger series. A built-in LED charging indicator lights up red during the charging process and turns green when charging is complete. The NL1834R battery is environmentally friendly and cost-saving. It can be recharged over 500 times, equivalent to 500 pairs of CR123A batteries. It features a protection circuit (PCB/IC protection) against short circuits, overcharging, and deep discharge. CE and RoHS certified.