Nitecore Carbon Battery 6K Kit - Headlamp Runtime Extender USB-C IP68 6000mAh

The Nitecore Carbon Battery 6K Kit is a headlamp runtime extender specifically designed to double or triple the runtime of compatible Nitecore headlamps. Connected directly to your headlamp, it activates Performance Mode for brighter and more stable output: the 6K battery becomes the primary power source, while the headlamp's internal battery takes over as backup. Compatible with the NU27, NU40, NU43, NU45, NU50, NU53, HC60 UHE, HC65 UHE, HC70 UHE and HC75 UHE, at only 134g complete, this kit is the essential accessory for trail running, trekking, marathons and long-duration outdoor adventures.

6000mAh Carbon IP68 and Safety Features

The 6K carbon fiber battery delivers 6000mAh (21.6Wh) in only 88g thanks to its ultra-lightweight carbon construction. Its 3 red power indicators display remaining battery level with a simple short press. Its constant rear red light provides night visibility and safety during outdoor activities. The USB-C to USB-C cable with integrated retention clip ensures a secure connection between the headlamp and battery. The 6K also charges your smartphones, action cameras, smartwatches and wireless earbuds via its USB-C port.

Complete Ultra-Lightweight Kit for Outdoor Use

Beyond its performance, the 6K Kit stands out for its wearing comfort: the reflective moisture-wicking headband ensures comfortable retention even during intense efforts, with optimal front-to-back weight distribution. The included 6K bracket positions the battery at the back for balanced weight. Carbon construction rated IP68 (submersible 2m). At 134g for the complete kit and 88g for the battery alone, it is the lightest runtime extender kit on the market for your Nitecore headlamps.

Operating Instructions

Headlamp Connection: Connect the USB-C to USB-C cable between the 6K battery and the headlamp port. The headlamp automatically activates Performance Mode and uses the 6K as primary power source.

Battery Level Check: Short press the button to illuminate the 3 red indicators showing remaining power.

Setup: Insert the battery into the bracket. Attach the bracket to the headband. Position the battery at the back for optimal balance.

Charging the 6K: Connect the USB-C cable to the battery port to recharge.

Charging External Devices: Connect a smartphone, camera or other USB-C device to the 6K battery port.

Specifications

• Headlamp runtime extender kit for compatible Nitecore headlamps
• Construction: Ultra-lightweight carbon fiber
• Capacity: 6000mAh 3.6V (21.6Wh)
• Rated energy: 3700mAh 5V (TYP 1A)
• Input: USB-C 5V⎓2A
• Output: USB-C 5V⎓2A
• Indicators: 3 red battery level indicators
• Rear red signal light: Yes (constant)
• Performance Mode: Activated upon connection
• Primary source: 6K powers headlamp first, internal battery as backup
• Headband: Reflective, moisture-wicking, comfortable
• Cable: USB-C to USB-C with retention clip
• Compatible: NU27, NU40, NU43, NU45, NU50, NU53, HC60/65/70/75 UHE
• Battery dimensions: 0.90" / 22.8mm (diameter) x 3.54" / 90.4mm (L)
• Battery weight: 3.10oz / 88g (±3g)
• Complete kit weight: 4.73oz / 134g (±3g) (with headband, bracket and cable)
• Impact resistance: 3.28ft / 1m
• Waterproof rating: IP68 (submersible 2m)

Box Contents

• 1 Carbon 6K Battery (6000mAh)
• 1 Reflective Moisture-Wicking Headband
• 1 Battery Bracket
• 1 USB-C to USB-C Cable with Retention Clip