The Carbon Battery 12K extends your headlamp runtime up to 2.5x longer - enough power to work through dawn.
12,000mAh of backup power in a 190-gram carbon fiber shell.
- 12,000mAh capacity multiplies standard headlamp runtime by 2-2.5x
- 190g weight - about the same as your smartphone
- USB-C port charges devices at 20W when you need emergency power
- Quick-release mechanism swaps batteries in seconds
- IP68 waterproof rating handles 2-meter submersion
- Rear red light provides team visibility in two modes
- Compatible with NU45, NU53, and HC65 UHE headlamps
- Performance Mode maintains consistent brightness throughout discharge
Professional-grade extended runtime for headlamps. When your work doesn't stop at sunset.
MULTIPLY YOUR OPERATIONAL TIME - The Carbon Battery 12K delivers genuine runtime extension. With the NU45, you'll see 2.5x longer operation. With the NU53 or HC65 UHE, expect double the runtime. That translates to 20+ additional hours on medium settings - the difference between returning to base at midnight or completing your task.
CARBON FIBER CONSTRUCTION KEEPS WEIGHT MINIMAL - At 190 grams, the Carbon Battery weighs about the same as an iPhone 15. The carbon fiber shell provides structural integrity while maintaining the 227.3Wh/kg energy density that makes extended operations practical. You're carrying serious backup power that won't weigh down your pack.
QUICK-RELEASE SYSTEM FOR SEAMLESS SWAPS - The proprietary clip mechanism (Utility Model Patent No.202420216307.4) connects securely in one motion. We've tested it with winter gloves - it works. The connection stays solid through rough terrain while allowing tool-free battery changes when you need them.
DUAL-PURPOSE POWER BANK FUNCTIONALITY - The USB-C port isn't just for charging the battery. It outputs up to 20W, enough to fast-charge most phones. When your GPS dies 15 miles from the trailhead, the same battery extending your headlamp runtime becomes your communication lifeline.
INTEGRATED SAFETY LIGHTING - Two red LEDs on the rear provide bidirectional or unidirectional flow patterns. Use constant mode for group visibility during night operations, or switch to flashing for emergency signaling. Your position stays visible to the team, even in dense fog or heavy rain.
BUILT FOR FIELD CONDITIONS - IP68 waterproofing means the Carbon Battery handles real weather. We're talking 2-meter submersion capability - stream crossings, torrential rain, accidental drops in puddles. The carbon fiber shell adds impact resistance for the inevitable knocks that happen in the field.
KEY ADVANTAGES OF THE CARBON BATTERY 12K
Energy Density: 227.3Wh/kg
Higher energy density than standard power banks means you're carrying more usable power per gram. For context, that's comparable to premium electric vehicle batteries.
Charging Speed: 27W Input
Full recharge in approximately 2.5 hours with a compatible USB-C charger. Between shifts or at resupply points, you can completely refuel the battery during a meal break.
Performance Mode Technology
When connected to compatible Nitecore headlamps, Performance Mode regulates power delivery for consistent brightness. You'll notice slower brightness degradation compared to standard battery discharge curves.
Universal Headlamp Compatibility
One battery works with multiple Nitecore models. If your team runs different headlamps (NU45, NU53, HC65 UHE), everyone can share backup power sources.
Extended headlamp runtime that professionals rely on.
Advanced battery technology in a practical package
The Carbon Battery 12K represents thoughtful engineering for extended operations. The 12,000mAh capacity comes from high-density lithium cells configured for optimal discharge rates when paired with LED headlamps.
Performance varies by headlamp model and selected brightness. With the NU45 on medium settings, expect approximately 45 hours total runtime - that's nearly two full nights of continuous operation. The NU53 and HC65 UHE deliver proportional extensions based on their power consumption profiles.
The 10-segment LED indicator provides immediate battery status. Press the power button for a quick capacity check - each lit segment represents 10% charge. No guessing about remaining runtime when precision matters.
Carbon fiber wasn't chosen for marketing appeal. At 190 grams total weight, the strength-to-weight ratio allows for a robust shell that protects the cells while adding minimal mass. The material naturally dissipates heat during high-drain discharge cycles.
Sometimes the best gear is the gear you barely notice until you need it. The Carbon Battery 12K stays out of your way until hour 12 of an operation, when everyone else is heading back to recharge.
REAL-WORLD APPLICATIONS
Search & Rescue
Multi-day search operations require reliable illumination. The Carbon Battery extends operational windows when returning to base isn't an option.
Industrial Operations
12-hour shifts in mines, construction sites, or maintenance facilities demand consistent lighting. One Carbon Battery covers the entire shift.
Backcountry Travel
Thru-hikers and expedition teams need lighting between resupply points. The Carbon Battery provides days of evening camp use.
Emergency Backup
Power outages require both illumination and device charging. The dual functionality covers both needs from a single source.
RUNTIME EXTENSION DATA
| HEADLAMP MODEL | RUNTIME MULTIPLIER | TYPICAL EXTENSION |
| NU45 | 2.5x longer | +20-30 hours (medium settings) |
| NU53 | 2x longer | +15-25 hours (medium settings) |
| HC65 UHE | 2x longer | +15-25 hours (medium settings) |
*Runtime varies based on brightness selection and environmental temperature
Performance Mode optimizes discharge curve for more consistent output.TECHNICAL SPECIFICATIONS
| Battery Type | Li-ion Battery Pack |
| Capacity | 12,000mAh @ 3.6V (43.2Wh) |
| Rated Output | 6,900mAh @ 5V (TYP 3A) |
| Energy Density | 227.3Wh/kg |
| Input (USB-C) | 5V⎓3A / 9V⎓3A (27W MAX) |
| Output (USB-C) | 5V⎓3A / 9V⎓3A / 12V⎓2.5A / 15V⎓2A (30W MAX) |
| Protection Rating | IP68 (2m submersible) |
| Dimensions | 95.5mm × 45.7mm × 24.2mm |
| Weight |
190g ± 5g (battery only) 240g ± 5g (with bracket & headband) |
| Download User Manual (PDF) | |
BATTERY LEVEL INDICATORS
| LED DISPLAY | REMAINING CAPACITY | APPROXIMATE RUNTIME* |
| 10 LEDs constant | 90-100% | 18-20 hours |
| 8 LEDs constant | 70-80% | 14-16 hours |
| 6 LEDs constant | 50-60% | 10-12 hours |
| 4 LEDs constant | 30-40% | 6-8 hours |
| 2 LEDs constant | 10-20% | 2-4 hours |
| 1 LED flashing | <5% | <1 hour - recharge needed |
*Runtime estimates based on medium brightness settings
Press the power button to display current charge level.
Package Contents
- Carbon Battery 12K - 12,000mAh extended runtime battery pack
- USB-C to USB-C Cable - 27W fast charging cable
- Adjustable Headband - Secure mounting with reflective strips
- Quick-Release Bracket - Tool-free battery attachment system
- Spare Loops (2x) - Replacement mounting loops
Extend Your Headlamp Runtime
The Carbon Battery 12K provides the extended runtime professionals need for multi-day operations, long shifts, and emergency backup power.
ADD THE CARBON BATTERY 12K TO YOUR KITYou’re Backed by Our 60-Day Ironclad Guarantee
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Try it for 60 days. If it’s not right for you, send it back.
We stand behind our gear. If you’re not happy with your purchase, just return the full package within 60 days and we’ll issue a full refund—no fuss, no forms, no hoops to jump through.
What Happens After You Order
- You’ll get an instant order confirmation email with your receipt.
- We’ll pack your order the next working day and send you a tracking number once it’s on the way.
- From the moment you order to the moment it reaches your hands, we’re here to keep you updated and supported.
When will I receive my gear?
- Singapore: Delivered to your doorstep in 4–6 working days.
- International: Arrive within 10–14 working days.
Returns and warranty
- Every product comes with a 1 to 3-year replacement warranty (depending on the item).
- If anything isn’t working right, just let us know. We’ll make it right.
FREE Gift with Purchase: Limited Edition Ember Shard Whistle
Spend $99 or more today, and we'll automatically include a limited-edition Glow-in-the-Dark Ember Shard Whistle when packing your order.
Charge it quickly under sunlight or your flashlight, and enjoy its subtle glow throughout the night—perfect for marking gear, emergency kits, or attaching to your bag.
Limited quantity available. Claim yours now!
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