NL1840 Rechargeable Battery, 4000 mAh

The NITECORE NL1840 is the world’s first 4000mAh 18650 Li-ion battery, developed in collaboration with NITECORE and its industry partner to push the boundaries of energy storage and performance. With a remarkable capacity of 4,000mAh (14.4Wh), the NL1840 offers 17.6% more power than traditional 18650 Li-ion batteries, making it a game-changer for users requiring high energy density in a compact form.

Featuring an energy density of 288mWh/g, this battery delivers excellent power output while maintaining a smaller, lightweight design. This makes it perfect for a wide range of high-drain applications, including flashlights, e-bikes, cameras, and other electronic devices that demand long runtimes and reliable performance.

The NITECORE NL1840 is engineered for both efficiency and safety. It incorporates built-in protection features to prevent overcharging, over-discharging, and short-circuiting, ensuring reliable performance and longevity. The 4000mAh capacity provides extended usage times between charges, reducing the need for frequent replacements and enhancing the overall user experience.

Whether you’re an outdoor enthusiast, a tech professional, or someone in need of long-lasting power for your devices, the NITECORE NL1840 offers superior performance, higher capacity, and long-term reliability compared to standard 18650 batteries.

Features

• Built-in intelligent protective circuit of the positive polarity protects against overcharge, over discharge and shortcircuiting
• Pressure relief valve activates in the event of a rapid temperature increase
• Effectively protects against overcharge, over discharge and short-circuiting
• Utilizes a high-quality battery protection IC
• Utilizes high-power MOS-FEE in the current regulation module for better efficiency and superior output

Specifications

Model: NL1840
Type: 18650
Capacity: 4000 mAh
Voltage: 3.6V (14.4Wh)
Charging Current: Maximum 2A (1A current recommended)
Weight: 50 g
Size: Diameter 18.6 mm±0.3 mm
Length: 69.8 mm±0.3 mm
Warranty Period: 12 months warranty from the date of purchase

Compatible with most 18650 based lighting tools on the market