
Nitecore 18650 Extension Battery Case
- Input: 5V 2A
- Output 5V 2A
- Battery Option: 18650 li-ion (excluding flat top battery)
- Dimensions: 106 mm x 40 mm x 35 mm / 4.17" x 1.57" x 1.38"
- Weight: 65 g / 2.29 oz.
- Included: cable clip

Nitecore 18650 Extension Battery Case
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Description
The Nitecore Extension Battery Case is compatible with a variety of head torches to provide longer runtime. Ideal for outdoor excursion such as trail running, climbing and hiking, the unit houses 1 x 18650 li-ion battery (not included). It can be used with the following Nitecore headlamps: NU40, NU43 and NU50.
The 18650 case connects directly to the headlamp via USB-C and attaches to the headband with a sturdy plastic mount. When the light is on, power is taken from the extension case first. Simultaneously the battery case charges the headlamp's built-in battery, allowing it to function to its fullest potential.
With a USB-C input and output the extension case can be used as a battery charger or a power bank, making it ideal for charging various electronic devices.
Blue power indicators can be activated to show the remaining battery level:
- 4 lights = <100%
- 3 lights = <75%
- 2 lights = <50%
- 1 light = <25%
In addition, four flashing red lights are available for safety and emergency use.
The Nitecore 18650 Extension Battery Case user manual can be downloaded here.
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