NITECORE NL1834R Rechargeable Battery 18650 3400mAh USB-C

What it is and what it’s for
The NL1834R is a rechargeable 18650 battery from NITECORE intended to power flashlights, headlamps and other portable power solutions listed by the manufacturer. It features direct charging via an integrated USB-C port.

Main characteristics
Rated capacity is 3,400 mAh. The English specification lists a nominal voltage of 3.7 V and energy of 12.58 Wh; the Chinese page lists 3.6 V and 12.24 Wh—both values are published in the official documentation. The integrated charge input is USB-C 5 V DC 1 A. Dimensions are diameter 18.5 ±0.3 mm and length 71 ±0.3 mm (consistent with 18650 format). Weight is 50 g. Chemistry is Li-ion NMC according to the manufacturer. The battery includes an internal protection circuit and a pressure relief valve.

Compatibility
Documented as an 18650 cell, it is compatible with devices that accept 18650 batteries; NITECORE positions it for flashlights, headlamps and power solutions. The official datasheet does not list specific device models as compatible or incompatible—verify that your device accepts an 18650 with the stated dimensions and characteristics before purchase.

Box contents and accessories
The official product page does not provide a box contents list or specify included accessories. Although images show a charging indicator LED and the possibility of charging via USB-C or external charger, the manufacturer does not state whether a USB-C cable is supplied. Please confirm inclusion of accessories if required.

Warnings and warranty
The official images indicate a 12-month warranty from date of purchase. The Chinese page specifies a charge limit value of 4.2 V; consider this when charging with external equipment. All information is sourced from NITECORE’s official EN and CN product pages and images.