BioLite Energy Range 400 Headlamp vs Fenix HL18R-T
Weight and specs compared for 2026 — and which one to choose.
400 lumens, 1634 mAh Li-ion battery, USB-C charging, IP67 rated. Best headlamp of 2025 for backpacking functionality.
Ultralight 500-lumen rechargeable headlamp for trail running.
Building a pack? Add either one to your HikeLoad list, or drop its weight into the base weight calculator, and see what it does to your total weight.
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BioLite Energy Range 400 Headlamp vs Fenix HL18R-T: which should you buy?
If saving weight is your priority, the Fenix HL18R-T wins — at 63 g it is 12 g (16%) lighter than the BioLite Energy Range 400 Headlamp (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.