Rechargeable 18650 battery with built-in USB-C port for direct charging. Of course, it can also be charged using any charger.

During charging from the built-in USB-C port, a red indicator light (next to the positive pole) will remain lit. Once charging is complete, a second green indicator light will turn on. It has internal safety features such as a pressure relief valve and a smart built-in charging circuit that protects against overcharging, over-discharging, and short-circuiting. It is compatible with most flashlights that accept 18650 batteries.

Technical specifications

• Capacity: 3400mAh  3.7V (12.58Wh)
• Input: USB-C: 5V – 1A
• Diameter: 18.5mm ±0.3mm
• Length: 71mm ±0.3mm
• Weight: 50g
• An NL1834R battery can be recharged up to 500 times