NITECORE 18650 Li-ion accu 4000mAh USB-C button top

The NITECORE NL1840R is a high-performance 18650 lithium-ion rechargeable battery with an integrated USB-C charging port, offering a capacity of 4000mAh and a nominal voltage of 3.6V. Designed for convenience and safety, it features a button top terminal and built-in protection circuits against over-charge, over-discharge, short-circuit, and over-current.

Advantages

With a high energy density of 14.4Wh and a maximum continuous discharge current of 8A, this battery delivers reliable power for a wide range of devices. The integrated USB-C port allows for easy charging without the need for a separate charger, and the built-in charging indicator provides real-time status. The low self-discharge rate ensures long shelf life, and the battery is certified to CE, RoHS, and FCC standards.

Suitable for

• Flashlights and headlamps
• Portable electronics
• Power banks
• DIY projects and hobbyist applications

Key specifications

• Battery Type: Lithium-ion (Li-ion)
• Battery Size: 18650
• Capacity: 4000 mAh
• Nominal Voltage: 3.6 V
• Energy: 14.4 Wh
• Charging Port: USB-C
• Max Charging Current (USB-C): 2 A
• Max Continuous Discharge Current: 8 A
• Protection Circuit: Integrated (Over-charge, Over-discharge, Short-circuit, Over-current)
• Rechargeable: Yes
• Cycle Life: >500 cycles
• Terminal Type: Button Top
• Built-in Charging Indicator: Yes
• Recommended Operating Temperature (Discharge): -20°C to 60°C
• Recommended Operating Temperature (Charge): 0°C to 45°C
• Certifications: CE, RoHS, FCC
• Self-Discharge Rate: Low

Recommendations

For optimal performance, use with devices that accept 18650 button top batteries. Charge using a USB-C cable connected to a suitable power source. Store in a cool, dry place away from direct sunlight.