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BioLite Range 400 vs Fenix HL18R-T

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

Fenix HL18R-T is the lighter option — 33 g lighter than the BioLite Range 400 (44% less weight). If grams matter to you, that is the one to beat.
Spec BioLite Range 400 Fenix HL18R-T
Weight 75 g · 0.075 kg · 0.17 lb 42 g · 0.042 kg · 0.09 lb
Brand BioLite Fenix
Category Lighting Lighting
BioLite Range 400
75 g

USB-C rechargeable headlamp with 400 lumens, IP67 rating and fast charging that adds an hour of run time in eight minutes.

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Fenix HL18R-T
42 g

Ultralight 500-lumen rechargeable headlamp for trail running.

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BioLite Range 400 vs Fenix HL18R-T: which should you buy?

If saving weight is your priority, the Fenix HL18R-T wins — at 42 g it is 33 g (44%) lighter than the BioLite Range 400 (75 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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