Nitecore NU25 UL vs Nitecore NU40
Weight and specs compared for 2026 — and which one to choose.
Dual-beam headlamp with white and red LEDs. Built-in rechargeable battery, IPX6 waterproof, and 400 lumens max output; ideal for ultralight hikers.
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Nitecore NU25 UL vs Nitecore NU40: which should you buy?
If saving weight is your priority, the Nitecore NU25 UL 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.