Fenix HL18R-T vs Nitecore NU25

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

Fenix HL18R-T is the lighter option — 10 g lighter than the Nitecore NU25 (19% less weight). If grams matter to you, that is the one to beat.

Spec	Fenix HL18R-T	Nitecore NU25
Weight	42 g · 0.042 kg · 0.09 lb	52 g · 0.052 kg · 0.11 lb
Brand	Fenix	Nitecore
Category	Lighting	Lighting

Fenix HL18R-T

42 g

Ultralight 500-lumen rechargeable headlamp for trail running.

Full details →

Nitecore NU25

52 g

Ultralight 360-lumen rechargeable headlamp.

Full details →

Fenix HL18R-T vs Nitecore NU25: which should you buy?

If saving weight is your priority, the Fenix HL18R-T wins — at 42 g it is 10 g (19%) lighter than the Nitecore NU25 (52 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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