Nitecore Carbon Battery 6K Kit Headlamp Runtime Extender for NU40, NU43, NU45, NU50, and HC65 UHE Headlamps

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!

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.

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

I've owned several headlamps and this is finally the best i have found. The battery life is great and it will stay on the high mode and not fade out after time. It's got good range and we love it for razor clam digging. Definitely work the money and buy the extra battery pack.

This is hands down the brightest headlamp I have used. It’s lightweight, easy to use and the battery life is great. If you’re looking for a solid hunting headlamp look no further.

Man not sure if it’s just a bad unit but my light will not run on this as my past one. Bought this as a replacement because the last one i had was stolen from me and it wont do the same thing. Was Also missing the cable but luckily i had the one from my last unit. Really bummed it didnt work for me this time sometimes it wont charge my light at all i have to fidget with it but it will just charge it when not in use and this is supposed to be a “secondary” source of power.

This works really well, very bright,nice design, value for your money

Well made and certainly adds life to the headline however it was suggested as an add-on to the Nitecore headlite I was buying. That light came with a carry case which of course is useless as soon as you add the battery as it wasn't designed to fit the combined items. It would have been better had they shipped it with a case that fits both the battery and the light. I mean this is useless without the actual light now isn't it.. I'm trying to decide if I return one or b both of the items...