As for the LED cap light I always look for something that uses regular ole batteries. A couple of double "A"s and I can get rechargeable ones for it. I hate something I have to replace little expensive batteries in.
Agreed. I chose my digital camera because I could put AA's in it if the lithium batteries died. Especially important if you don't have access to a power outlet. I have a head lamp that takes a couple AAA's. Comes with a head band so I don't have to wear a cap or adjust the cap to see. And a lamp that clips on your brim adjusts you hat for you through it's weight
and the leverage principle. I have both.
Even if they save energy, I'm still not comfortable with LED lights
. I feel like I'm squinting, but if I have to, I guess I have to.