Black Diamond Deploy 325 Headlamp vs Fenix HL18R-T

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

Black Diamond Deploy 325 Headlamp is the lighter option — 2 g lighter than the Fenix HL18R-T (5% less weight). If grams matter to you, that is the one to beat.

Spec	Black Diamond Deploy 325 Headlamp	Fenix HL18R-T
Weight	40 g · 0.040 kg · 0.09 lb	42 g · 0.042 kg · 0.09 lb
Brand	Black Diamond	Fenix
Category	Lighting	Lighting

Black Diamond Deploy 325 Headlamp

40 g

Ultra-compact 40g headlamp with 325-lumen output. Folds flat for easy storage in a pocket or pack lid. USB-C rechargeable. Best-in-class weight for a capable tr...

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Fenix HL18R-T

42 g

Ultralight 500-lumen rechargeable headlamp for trail running.

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Black Diamond Deploy 325 Headlamp vs Fenix HL18R-T: which should you buy?

If saving weight is your priority, the Black Diamond Deploy 325 Headlamp wins — at 40 g it is 2 g (5%) lighter than the Fenix HL18R-T (42 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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