The Nitecore NU25 UL is praised as a functional, lightweight headlamp perfect for backpacking and outdoor activities. Reviewers noted its waterproof build, essential feature set, and surprisingly low price point. While some found the 400-lumen output modest, the overall consensus is that it delivers solid performance for ultralight enthusiasts. It's best suited for hikers and campers seeking reliable, budget-friendly headlamp functionality.
Full review
Build Quality and Design
The Nitecore NU25 UL headlamp is constructed from durable polycarbonate material that delivers both impact resistance and a lightweight profile. According to the BudgetLightForum review, the NU25 MCT UL version weighs just 47 grams, making it one of the lightest dual-beam headlamps available. The design features a unibody optical lens system with multiple facets and a TrueVision+ optical matrix that minimizes light loss and improves reflectivity. The headband uses an elastic cord with reflective elements that glow in the dark, providing visibility from behind or the side. The lamp unit can be adjusted to tilt downward, and a rubber cover protects the charging port. The headlamp's IP66 waterproof rating ensures it can withstand strong jets of water from any direction, making it suitable for use in wet conditions. The buttons are small and flush with the body, which makes them difficult to operate while wearing gloves, though they feature tactile pimples for easier identification when gloveless.
Real-World Performance
In practical testing, the NU25 UL demonstrated solid performance across various outdoor scenarios. The fellrunningguide.co.uk reviewer tested the torch on numerous trail running and camping outings in the Peak District, noting that the dual-beam design provided both floodlight and spotlight capabilities. The torch offers three brightness settings in dual mode (60, 200, and 400 lumens) and includes an ultra-low 6 lumen setting, strobe mode, and red light mode. RTINGS measured the NU25's peak brightness at 400 lumens with a maximum beam distance of 132 meters. The battery life was tested by the same reviewer, who found that the torch lasted 2 hours and 27 minutes on maximum power before switching to reserve mode, with an additional 50 minutes of operation before complete shutdown. The NU25 MCT UL version, according to BudgetLightForum, offers a maximum autonomy of 45 hours on the lowest setting, with a built-in USB-C port that allows full charging in just 1 hour and 15 minutes at 5V/0.5A.
User Interface and Controls
The NU25 UL's user interface presents a complex array of controls that can be challenging to navigate. The fellrunningguide.co.uk reviewer noted that it took several uses to figure out how to switch between different modes, often requiring removal from the head to determine which lamps were illuminated. There are two buttons: a rectangular on/off button and a circular mode button. A long press of the on/off button turns the torch on in dual mode at 60 lumens, with subsequent presses increasing to 200 and then 400 lumens. The mode button allows selection between floodlight and spotlight, and also accesses red light mode, strobe mode, and battery indicator. The buttons are very small and lie flush with the body, making them difficult to operate while wearing gloves. However, the on/off button includes tactile pimples to aid identification when gloveless. The BudgetLightForum reviewer mentioned that the NU25 MCT UL features 5-step tilt adjustment with the chosen position remaining unchanged even when the head is swaying, and the mounting bracket is designed specifically for this model with a lock adjuster and reflective paracord for easy adjustment.
What Reviewers Loved
Multiple reviewers praised the NU25 UL for its lightweight design and versatility. CleverHiker's Ben Dawson described it as 'the unsung hero of ultralight headlamps' and emphasized its functional nature, loaded with essential features, waterproofing, and affordability. The fellrunningguide.co.uk reviewer appreciated the torch's ability to handle both trail running and camping scenarios effectively. The NU25 MCT UL version was highlighted for its dual-core UHE MCT (Multiple Color Temperature) LEDs, which offer three color temperatures (3000K warm light, 4500K neutral white light, 6500K cool white light) and auxiliary red lights for night vision without disturbing others. The BudgetLightForum reviewer noted that the NU25 MCT UL's optical system provides a wide field of view (100°) with a maximum power of 400 lumens and a maximum distance of 132 meters. All reviewers appreciated the IP66 waterproof rating and the ability to charge the device via USB-C, which allows for convenient charging while on the move.
Where It Falls Short
Despite its many strengths, the NU25 UL has several drawbacks that reviewers have noted. The fellrunningguide.co.uk reviewer found the button layout confusing and difficult to operate while wearing gloves, with the buttons being too small and flush with the body. The complexity of the interface was also noted by 1lumen.com, which described the user interface as potentially introducing a fairly complex and confusing experience. The BudgetLightForum reviewer mentioned that the electronic lock mode was intended to prevent involuntary activations, but this feature might not be sufficient for all users. Additionally, the lack of a visible battery compartment and the small button design were cited as potential issues for users who prefer more accessible battery access or larger tactile controls. Some reviewers also noted that the torch's performance in cold conditions might be affected, as the battery life was noted to be less than claimed in outdoor settings.
Who It's Best For
The NU25 UL is ideal for ultralight backpackers, hikers, and runners who prioritize weight savings without sacrificing performance. According to the fellrunningguide.co.uk review, it's particularly suited for trail running and camping in wet conditions due to its IP66 rating. The BudgetLightForum reviewer emphasized its suitability for outdoor enthusiasts who need a dedicated headlamp with low weight, wearable and adjustable without difficulty. The 1lumen.com review highlighted its use in various outdoor scenarios, including camping, biking, and tactical applications. However, users who frequently operate in cold weather or require easy battery access may find the design less appealing. The NU25 UL is also recommended for those who prefer a dual-beam setup with multiple brightness options and special modes, though the complexity of the interface may be a drawback for casual users. The device is best suited for individuals who value compactness, waterproofing, and long battery life over ease of operation.
How It Compares to Alternatives
The NU25 UL competes with other lightweight dual-beam headlamps such as the Fenix PD36R and the Streamlight Stinger 2.0. The BudgetLightForum reviewer placed the NU25 MCT UL next to other headlamps including the Zebralight H604c and the SPERAS B7, noting its compact design and lightweight profile. Compared to the NU25, the NU25 UL offers a 10-gram weight reduction by using an elastic cord instead of a cord and strap combination. The 1lumen.com review noted that the NU25 is part of a new breed of in-built Li-ion battery powered headlamps, contrasting with models that use user-replaceable batteries. While some reviewers appreciated the versatility and performance of the NU25 UL, others found the interface more complex than alternatives like the Olight Baton 2.0, which offers simpler button controls and a more straightforward operation. The NU25 UL's IP66 rating and waterproof capabilities are on par with many competitors, but its compact design and dual-beam functionality set it apart in the ultralight category.
Value at This Price
The NU25 UL offers solid value for its price point, with the fellrunningguide.co.uk reviewer noting that it feels and functions like a higher-end headlamp despite its affordable cost. The BudgetLightForum reviewer highlighted the NU25 MCT UL's features, including the dual-core UHE MCT LEDs, wide field of view, and maximum power of 400 lumens with a 132-meter beam distance. The 1lumen.com review emphasized the device's versatility and performance, noting that it is suitable for a wide range of outdoor activities. The NU25 UL's built-in 650mAh lithium-ion battery and USB-C charging capability provide convenience and reliability. However, the complexity of the user interface and the small button design may be seen as drawbacks that could affect overall value for users who prioritize ease of use. The device's waterproof rating, long battery life, and lightweight design make it a strong contender in the ultralight headlamp market, especially when compared to similar products in the same price range.
Strengths
- +Bright and lightweight design ideal for backpacking
- +Loaded with essential features including waterproofing
- +Surprisingly affordable for its quality and features
- +Rechargeable battery with good functionality
Watch-outs
- −Limited brightness at maximum setting (400 lumens)
- −No dedicated red light mode for night vision preservation
How it compares
The Nitecore NU25 400 UL is more affordable than the Silva Trail Runner Free H, which offers better brightness at 400 lumens versus 400, and provides a more budget-friendly option for ultralight enthusiasts. However, it lacks the hybrid battery system of the Silva and doesn't feature the triple brightness settings of the Silva.
Who this is for
At a glance: budget-conscious hikers.
Why you’d buy the Nitecore NU25 400 UL
- Bright and lightweight design ideal for backpacking.
- Loaded with essential features including waterproofing.
- Surprisingly affordable for its quality and features.
Why you’d skip it
- Limited brightness at maximum setting (400 lumens).
- No dedicated red light mode for night vision preservation.
Rating sources
“Nitecore NU25 and NU25UL are essentially the same torch with a different headband. The UL shaves around 10g off by just using elastic cord rather than a cord and strap combination on the NU25.”
Our 4.3 score is the average of these published ratings. Ratings marked * were derived from the reviewer’s written analysis or video transcript — the publisher didn’t print an explicit numeric score, so we inferred one from their own words. Click through to verify. More about methodology.
