Headlamps — lumens, beam, battery, and waterproofing buying guide

Guides

Practical headlamp buying content — lumens and beam distance, flood vs spot, rechargeable vs AAA, red light modes, and IPX waterproofing ratings explained.

GuideRed light is the feature you'll use most and never see advertisedHeadlamps are sold on brightness, but the small red-light mode tucked in the corner of the spec sheet is the one that genuinely improves your nights outdoors… Buying guide How to choose a headlamp: lumens, beam, battery, and waterproofing Why peak lumens mislead, what beam distance and beam angle actually tell you, rechargeable vs AAA trade-offs, when red light matters, and how to read IPX ratings for rain and submersion.

Why this page exists

Headlamp packaging leads with peak lumen numbers — often achieved only on maximum mode for a few minutes before the battery or thermal management reduces output. A 1000-lumen headlamp that runs at 200 lumens for 90% of its runtime tells you almost nothing from the box alone.

This page focuses on the numbers that predict real-world performance: beam distance in meters, regulated vs non-regulated output, runtime at actual use modes, and IPX ratings matched to intended use.

Plain note about money. Links below go to eBay searches with an affiliate tag. If you buy through one, a small commission comes to this site. Your price is identical either way.