Jonathan Nielsenwrote a review of Black Diamond ReVolt Headlamp on August 29, 2016
Familiarity: I've put it through the wringer
I own multiple Black Diamond ReVolt headlamps and I could not be happier. I especially like the feature to be able to charge via USB which is useful for car applications as I will charge up the headlamp while driving to trips. The fact that the headlamp comes with both rechargeable and lithium disposable batteries is a plus. The total hours of light of up to 300 with lithium ion batteries is crazy.