Nitecore NU25 UL Review: A Light for the Night

Nitecore NU25 UL Review: Bask in 400 lumens of brilliance with this ultralight headlamp. Perfect for night hikes or power outages, it’s a minimalist’s dream come true.

Kendall Moreno
6 min readDec 28, 2024

When I first stumbled into the world of ultralight backpacking, I assumed it was a community of people who’ve mastered the art of leaving things behind. But then I met the Nitecore NU25 UL headlamp, an item so lightweight and efficient it could turn even a night owl like me into a minimalist. With its 400 lumens of dazzling illumination and its clever Eco-Sensa Type C USB charging cord, it promises to illuminate my path while whispering sweet nothings about energy efficiency and prolonged runtimes. In the inky woods or a power outage at home, this little marvel seems determined to hang around, lighting my way with the commitment I never expected from a tiny headlamp.

Discovering the Nitecore NU25 UL: An Ode to the Ultralight Headlamp

I must confess, I’d never really given much thought to headlamps before. Sure, I had worn one on the odd camping trip, but that was it — the headlamp was merely a functional item that kept me from face-planting into nature’s numerous obstacles after sunset. Then, I met the Nitecore NU25 UL, and my rather lackadaisical stance on headlamps was transformed. Think of this tale as my romantic comedy featuring 400 lumens of LED goodness.

Nitecore NU25 UL - 400 Lumens Ultralight Rechargeable Headlamp with Eco-Sensa Type C USB Charging Cord

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Unpacking the 400 Lumens Revelation

As someone who spends a fair amount of time reading by candlelight in my imaginary log cabin, the allure of 400 lumens was akin to discovering fire. I mean, let’s think about that for a second: 400 lumens! That’s like having a disco ball strapped to your head, and I mean that in the best way possible. For those not in the know, the higher the lumens, the brighter the light. And at 400 lumens, this feisty number is ready to illuminate entire nightscapes, not unlike a lighthouse guiding a weary ship home.

Into the Night: The Beam Distance Phenomenon

I liken the NU25 UL’s 64-meter max beam distance to the phenomenon of finally locating the bathroom in a dark hotel room. The relief! This notable range offers an opportunity to view the world — or at least the patch of earth in your immediate vicinity — in a whole new light, literally. Whether you’re an avid night hiker or simply a midnight snack seeker, knowing you’ve got a 64-meter range to keep tabs on your environment is comforting.

Beam Intensity: Let There Be Light!

If you’re scratching your head and wondering what beam intensity is, you’re not alone. Beam intensity, rated at 1029 candela for the NU25 UL, basically determines how focused that light beam is. In practical terms, imagine trying to read the fine print on a chocolate bar in the dead of night — this headlamp’s beam intensity would let you savor every last ingredient.

Running the Numbers on Runtime

While the idea of a 45-hour maximum runtime sounds impressive, let’s not sail by it without a closer inspection. If my math isn’t faulty (and it often is), that’s nearly two full days of continuous light should you choose to pursue enough nocturnal activities to necessitate such a feat. Granted, I can’t fathom what would require you to keep your headlamp fully operational for that long, but it’s certainly nice to know you have options — because options are what life is all about, right?

Nitecore NU25 UL - 400 Lumens Ultralight Rechargeable Headlamp with Eco-Sensa Type C USB Charging Cord

The Eco-Sensa Type C USB Charging Cord: A Mild Obsession

Let’s chat a bit about the charging cord because, believe it or not, it’s becoming a modern fascination of mine — a personal ‘eco-sensa-tion,’ if you will. USB Type C is the newest darling in charging technology, celebrated for its fast charging capabilities and reversible design. But, the real jewel here is the “Eco-Sensa.” With that name, I can only imagine it’s on a mission to save the planet, one charge at a time. While I can’t confirm any real eco-friendly superpowers, it doesn’t hurt to think we’re doing a smidge for Mother Earth while topping up the headlamp’s battery.

Nitecore NU25 UL: Much More than a Headlamp

I like to think of the Nitecore NU25 UL as the Swiss Army knife of the headlamp universe. Sure, its primary function is to keep you from knocking your shins against furniture in a power outage, but digging deeper reveals a treasure trove of versatility. Whether it’s the lightweight 45g design (before adding the band), the high-water resistance, or the multiple-light modes, this headlamp subtly transforms from “just some torch” to a loyal companion. And while I may not use all of its 1029 candela beam intensity every day, it sure feels good knowing it’s there: my guardian light of sorts.

Nitecore NU25 UL - 400 Lumens Ultralight Rechargeable Headlamp with Eco-Sensa Type C USB Charging Cord

Lightweight Elegance with Thoughtful Design

I have never been one to carry much — just the essentials, a belief born from an innate desire to feel unburdened by life’s inevitable baggage. At 45g even before the band, the NU25 UL falls effortlessly into my conception of travel light, adding only what it gives — you know, illumination. The weight consideration may seem trivial, but there’s an elegance to ultralight design that’s impossible to ignore, especially when it’s perched atop your noggin.

Endurance Test: Facing the Elements

I love the idea that technology can defy the elements. The only thing better than sitting smugly inside as the heavens unleash a monsoon is actually being outside, confident that your gear is up to the task. The resistance to water and shock in this headlamp speaks to quality and endurance, two things I appreciate, maybe even envy, in all areas of life except for my hair routine.

Nitecore NU25 UL - 400 Lumens Ultralight Rechargeable Headlamp with Eco-Sensa Type C USB Charging Cord

Multiple Modes for Every Occasion

Much like how I appreciate a towel that’s both large and absorbent, I delight in the varieties offered by the NU25 UL’s multiple lighting modes. Between various white and red light settings, you’re granted the power to shift between subtly shimmering onlookers to bathing them in total brilliance. There’s something for every occasion — trust me, your friends will thank you during those weekend camping trips.

Shortcomings: Even Stars Have Flaws

Let’s not pretend the Nitecore NU25 UL isn’t without its flaws. While perfect is in the eye of the beholder (or in this case, the user), I might have wished for just a tad more battery life when using the highest mode. But, let’s be honest, critiques are there to remind us all that everything worth loving has imperfections — and vice versa.

Nitecore NU25 UL - 400 Lumens Ultralight Rechargeable Headlamp with Eco-Sensa Type C USB Charging Cord

A Newfound Appreciation for Illumination

While I never considered myself the type to wax poetic over a headlamp, here I am, romanticizing its brilliance and lamenting its very few shortcomings. This exercise has transformed my appreciation from dismissive to delighted. It’s good to be illuminated, literally and figuratively, and perhaps with the NU25 UL, life appears just a bit brighter.

As a token of your indulgence, if you’ve enjoyed this foray into the kaleidoscopic world of high-powered headlamps, I invite you to clap, leave a response, and subscribe to my Medium newsletter. There’s plenty more captivating content just a heartbeat away, and I promise, I’ll do my best to light the way.

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Kendall Moreno
Kendall Moreno

Written by Kendall Moreno

Illuminate Your Path with the Ultimate Headlamp for Climbing, Safety, and Construction Designed for adventurers, workers, and anyone who demands reliable light.

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