Still, they’re not perfect, and there are few things to consider when looking at the Black Diamond headlamps. For starters, most of them are relatively low powered. The brightest light we have here is only 350 lumens. Most of Black Diamond’s headlamps are also non-rechargeable. Again, only one light out of the seven we brought on the Portsmouth trip can be recharged. These are far from deal breakers, but if you are the kind of person who might use your UTV for search and rescue activities or long excursions in open spaces like the desert, the lack of brightness and USB charging could make the difference for you.