---
product_id: 632699804
title: "Nitecore Carbon Battery 6K Kit Headlamp Runtime Extender for NU40, NU43, NU45, NU50, and HC65 UHE Headlamps"
brand: "nitecore"
price: "HK$634"
currency: HKD
in_stock: true
reviews_count: 8
category: "Nitecore"
url: https://www.desertcart.hk/products/632699804-nitecore-carbon-battery-6k-kit-headlamp-runtime-extender-for-nu40
store_origin: HK
region: Hong Kong
---

# Up to 3x runtime boost Rear red safety light Ultra-lightweight 3.5 oz Nitecore Carbon Battery 6K Kit Headlamp Runtime Extender for NU40, NU43, NU45, NU50, and HC65 UHE Headlamps

**Brand:** nitecore
**Price:** HK$634
**Availability:** ✅ In Stock

## Summary

> 🔦 Power your night, own the dark.

## Quick Answers

- **What is this?** Nitecore Carbon Battery 6K Kit Headlamp Runtime Extender for NU40, NU43, NU45, NU50, and HC65 UHE Headlamps by nitecore
- **How much does it cost?** HK$634 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/632699804-nitecore-carbon-battery-6k-kit-headlamp-runtime-extender-for-nu40)

## Best For

- nitecore enthusiasts

## Why This Product

- Trusted nitecore brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safety in Sight:** Integrated rear red LED acts as a night runner’s beacon or group signal light.
- • **Secure Snap & Go:** Quick-release cable and cable clips keep your setup tidy and rock-solid on the move.
- • **All-Inclusive Kit:** Comes with battery, headband, bracket, USB-C cable, and a sleek Nitecore sticker for the pros.
- • **Featherlight Comfort:** Weighing just over 3 ounces, it balances perfectly for all-night wear without fatigue.
- • **Triple Your Adventure Time:** Extend your Nitecore headlamp runtime by 2-3x for unstoppable night missions.

## Overview

The Nitecore Carbon Battery 6K Kit is a premium runtime extender designed for select Nitecore headlamps (NU40, NU43, NU45, NU50, HC65 UHE). It triples your light time with a lightweight carbon fiber battery pack that clips securely to your headband. Featuring a rear red safety light and quick-release cable, it’s engineered for comfort, durability, and enhanced nighttime visibility—perfect for professionals and outdoor enthusiasts who demand reliable, long-lasting illumination.

## Description

Buy Nitecore Carbon Battery 6K Kit Headlamp Runtime Extender for NU40, NU43, NU45, NU50, and HC65 UHE Headlamps: Headlamps - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: A most-worthy upgrade - I think I've just come to enjoy this brand for the function, value and overall aesthetic of the system. Here is a headlamp system (battery + headband) which I gladly purchased (twice now) to outfit two, HC65 UHE headlamps I bought earlier. One headlamp is my back-up... as some of us search-and-rescue folks tend to like reliable gear (in pairs). I don't have a longevity review yet... But I will add that extra bit of information as more time passes and I've used the system under a variety of situations. I can say though, after at least 2-months of regular use (both short and extended) that I like it. The standard set up for the HC65 UHE is great. No complaints. Battery life is wonderful (providing bright, adjustable light and reliability). But just knowing that I'm drawing from the extra battery on the backside of this kit (FIRST) gives me great piece-of-mind when I'm out at night and need to illuminate an area hands-free... while on extended walks or runs. Having a fresh, primary battery inside the light itself just feels right. I've used this extra battery system in rainy, chilly autumn downpours and I'm still grinning ear-to-ear at the value this system provides me (and my dog) as we're out and about in unlit (and occasionally sketchy) areas. The connectors are solid. I've not had any issues with them coming loose at all, whether I've tossed this system in a tightly-compressed dry bag or a loose bag with other items bouncing around with it. The simple headband adjustability, forehead slipstrip and general headband aesthetic remain (as it should). The battery itself is very long lasting (more info to come there with longevity testing). I do love the red charging indicator (4 leds) that give you feedback on the staus of your charge. This doubles as a rear, blinking, caution light (or guide light if you're in a group)... Or you can opt out of that feature entirely and turn that part off. Nice. Nitecore, have you done it again? At least for THIS guy you have. Yes, you have. Thank you!
Review: Absolutely amazing, completely changed my Nitecore HC60. Absolutely amazing - I was going to get a HC75 3000lm, but after using this, my HC60 1600lm operates completely different now. Excellent quality, comfortable, pretty lightweight, it operates of the battery first when plugged into the headlamp and is charging the headlamp battery. Completely different light management, so bright , I'm in no hurry for the other one with adjustable flood and spot, nice carbon battery design and charges on a C cable.

## Features

- DOUBLES OR TRIPLES RUNTIME - When connected to the headlamp, the Nitecore Carbon 6K Kit significantly extends the run time of Nitecore Headlamps such as NU43, NU45, HC60 UHE, HC65 UHE and HC70 UHE Headlamps.
- SECURE CONNECTION - Comes with a quick-release cable, reliably connecting the kit and headlamp, and clips to tuck the cable neatly around the headband.
- LIGHTWEIGHT - Weighing just over three ounces, carbon 6K fits easily on the back of the headband for a balanced weight distribution and comfortable wearing experience
- RED SAFETY LIGHT - A rear red light serves as a signal light at night, perfect for night runners or outdoor workers
- CONTENTS - Carbon Battery 6K, Headband, Bracket, USB-C to USB-C charging cable, Nitecore Sticker

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D1HDS2K8 |
| Additional Features | Adjustable Strap, Lightweight |
| Assembled Height | 0.9 inches |
| Battery Description | Lithium-Ion |
| Battery Type | Lithium Ion |
| Best Sellers Rank | #86,658 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #511 in Camping Headlamps |
| Brand Name | Nitecore |
| Brightness | 2000 Lumen |
| Color | Black |
| Customer Reviews | 4.2 out of 5 stars 40 Reviews |
| Included Components | Battery, Charging Cable, Clip, Head Band |
| Item Dimensions D x W x H | 0.9"D x 3.54"W x 0.9"H |
| Item Type Name | headlamp runtime extender |
| Item Weight | 3.52 ounces |
| Light Source Type | LED |
| Manufacturer | Sysmax Innovations Co. |
| Manufacturer Warranty Description | 18 month manufacturer warranty post purchase date. |
| Material | Carbon Fiber |
| Material Type | Carbon Fiber |
| Number of Batteries | 1 Lithium Ion batteries required. (included) |
| Power Source | Battery Powered |
| Special Feature | Adjustable Strap, Lightweight |
| Style Name | Headlamp |
| Unit Count | 1.0 Count |
| Warranty Type | Limited |
| Water Resistance Level | Water Resistant |
| White Brightness | 2000 Lumens |

## Product Details

- **Special Feature:** Adjustable Strap, Lightweight
- **Color:** Black
- **Power Source:** Battery Powered
- **Light Source Type:** LED
- **Material:** Carbon Fiber

## Images

![Nitecore Carbon Battery 6K Kit Headlamp Runtime Extender for NU40, NU43, NU45, NU50, and HC65 UHE Headlamps - Image 1](https://m.media-amazon.com/images/I/51DYUaL3wpL.jpg)
![Nitecore Carbon Battery 6K Kit Headlamp Runtime Extender for NU40, NU43, NU45, NU50, and HC65 UHE Headlamps - Image 2](https://m.media-amazon.com/images/I/51YM0r617AL.jpg)
![Nitecore Carbon Battery 6K Kit Headlamp Runtime Extender for NU40, NU43, NU45, NU50, and HC65 UHE Headlamps - Image 3](https://m.media-amazon.com/images/I/51Yx0hPkzvL.jpg)
![Nitecore Carbon Battery 6K Kit Headlamp Runtime Extender for NU40, NU43, NU45, NU50, and HC65 UHE Headlamps - Image 4](https://m.media-amazon.com/images/I/61Ef74lNMEL.jpg)
![Nitecore Carbon Battery 6K Kit Headlamp Runtime Extender for NU40, NU43, NU45, NU50, and HC65 UHE Headlamps - Image 5](https://m.media-amazon.com/images/I/61HOzJr2ROL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ A most-worthy upgrade
*by 3***2 on December 6, 2025*

I think I've just come to enjoy this brand for the function, value and overall aesthetic of the system. Here is a headlamp system (battery + headband) which I gladly purchased (twice now) to outfit two, HC65 UHE headlamps I bought earlier. One headlamp is my back-up... as some of us search-and-rescue folks tend to like reliable gear (in pairs). I don't have a longevity review yet... But I will add that extra bit of information as more time passes and I've used the system under a variety of situations. I can say though, after at least 2-months of regular use (both short and extended) that I like it. The standard set up for the HC65 UHE is great. No complaints. Battery life is wonderful (providing bright, adjustable light and reliability). But just knowing that I'm drawing from the extra battery on the backside of this kit (FIRST) gives me great piece-of-mind when I'm out at night and need to illuminate an area hands-free... while on extended walks or runs. Having a fresh, primary battery inside the light itself just feels right. I've used this extra battery system in rainy, chilly autumn downpours and I'm still grinning ear-to-ear at the value this system provides me (and my dog) as we're out and about in unlit (and occasionally sketchy) areas. The connectors are solid. I've not had any issues with them coming loose at all, whether I've tossed this system in a tightly-compressed dry bag or a loose bag with other items bouncing around with it. The simple headband adjustability, forehead slipstrip and general headband aesthetic remain (as it should). The battery itself is very long lasting (more info to come there with longevity testing). I do love the red charging indicator (4 leds) that give you feedback on the staus of your charge. This doubles as a rear, blinking, caution light (or guide light if you're in a group)... Or you can opt out of that feature entirely and turn that part off. Nice. Nitecore, have you done it again? At least for THIS guy you have. Yes, you have. Thank you!

### ⭐⭐⭐⭐⭐ Absolutely amazing, completely changed my Nitecore HC60. Absolutely amazing
*by T***J on August 9, 2025*

I was going to get a HC75 3000lm, but after using this, my HC60 1600lm operates completely different now. Excellent quality, comfortable, pretty lightweight, it operates of the battery first when plugged into the headlamp and is charging the headlamp battery. Completely different light management, so bright , I'm in no hurry for the other one with adjustable flood and spot, nice carbon battery design and charges on a C cable.

### ⭐⭐⭐⭐ Crazy long battery life
*by B***N on November 2, 2025*

Works very well and as advertised. Battery life increases to a ridiculous amount of time which is exactly what I needed for camping and backpacking. Running at a faster pace makes it bounce a little more than I would like, but it’s still worth the buy

## Frequently Bought Together

- Nitecore Carbon Battery 6K Kit Headlamp Runtime Extender for NU40, NU43, NU45, NU50, and HC65 UHE Headlamps
- Nitecore NU53 1800 Lumen Headlamp, USB-C Fast Charging Long Runtime Lightweight Designed for Industrial uses with Auxilary White and Red Light Sticker
- Nitecore NU43 Rechargeable Headlamp, 1400 lumens USB-C Bright Lightweight for Camping, Running, or Working, with Spotlight, Floodlight, Red Light, Including NitecoreS Sticker

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-25*