Warning "headlamp dummie alert"! Lat fall I Got a Boruit HP300 LED for the green to use during hunting season going to the stand in the dark. I was pleased with it during the fall, but tried to use it this weekend up at the happy hunting grounds and it wouldn't work. It's been about two months since I used it last and the last 4 weeks of that was bitter cold. I've seen comments that the battery is crap on other threads and figure the cold killed it. I tried to charge it and it would not charge. It's a Rooter or some such, but looked like an NCR 18650B except for the flat positive terminal so I wasn't surprised that my spare 18650 with a "nipple" didn't work either, as I'm assuming due to the length it has to be a flat-top. Both + and- terminals are the tapered coil spring type. Brought it home and stuck it on my X-tar Ant only to find it wasn't dead. Got to looking and it looked like I may have over tightened the endcap and the spring contact at the neg. end wasn't making contact with the internal metal strips. Pulled the spring out slightly and re-tightened the cap just snug until it started working. Not so impressed with it now. Should I cut my frustration and just find another LED headlamp with agreen option. What do you recommend?