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Nitecore NU25 UL 400 vs Nitecore NU40

Weight and specs compared for 2026 — and which one to choose.

Nitecore NU25 UL 400 is the lighter option — 36 g lighter than the Nitecore NU40 (43% less weight). If grams matter to you, that is the one to beat.
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Spec Nitecore NU25 UL 400 Nitecore NU40
Weight 48 g · 0.048 kg · 0.11 lb 84 g · 0.084 kg · 0.19 lb
Brand Nitecore Nitecore
Category Lighting Lighting
Nitecore NU25 UL 400
48 g

Ultralight 48g headlamp with 400-lumen max output and dual red-light modes. USB-C fast charging, IP66 rated. Excellent balance of weight, brightness, and batter...

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Nitecore NU40
84 g

1000-lumen rechargeable headlamp with dual light sources.

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Nitecore NU25 UL 400 vs Nitecore NU40: which should you buy?

If saving weight is your priority, the Nitecore NU25 UL 400 wins — at 48 g it is 36 g (43%) lighter than the Nitecore NU40 (84 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.

See where both rank against everything else in this category on the lightest lighting page, or browse the full gear weight database.

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