energizer lithiumwhat kind of battery were you using? alkaline, NiMH, energizer lithium, or lithium ion 3.7v
Very true! It's now my go-to headlamp, although I'm beginning to like my H30 as well! It's unfortunate that the UI on the H30 leaves something to be desired...It's normal for it to get hot / warm. This impressive tiny light has very good heat sinking so thermal dissipation is impressive.
I love this light!