Since I also volunteer at a fire department I use my rechargable light, made by streamlight. It is available to the general public. Just look them up on line at streamlight.com A charge will last a few hours. more than enough to get into dark woods and out again. I just drop it in the charger when I get home it is ready in about an hour. It is also a halogen light. can see thru the most foul weather. Very bright. I cut the brightness down by placing my hand over the lense. Comes in handy when having to dress a deer after dark.