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Black Diamond Storm 500-R vs Nitecore NU25 UL 400

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

Nitecore NU25 UL 400 is the lighter option — 63 g lighter than the Black Diamond Storm 500-R (57% less weight). If grams matter to you, that is the one to beat.
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Spec Black Diamond Storm 500-R Nitecore NU25 UL 400
Weight 111 g · 0.111 kg · 0.24 lb 48 g · 0.048 kg · 0.11 lb
Brand Black Diamond Nitecore
Category Lighting Lighting
Black Diamond Storm 500-R
111 g

Rechargeable 500-lumen headlamp with waterproof design.

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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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Black Diamond Storm 500-R vs Nitecore NU25 UL 400: which should you buy?

If saving weight is your priority, the Nitecore NU25 UL 400 wins — at 48 g it is 63 g (57%) lighter than the Black Diamond Storm 500-R (111 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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