Can anyone tell me if this is one battery per device or three batteries per device?
It’s per device.
This Tactical LED Bundle was a really nice buy, I’ve used all of the lights and they work fantastically well. I have used the “headlight” more often than I ever thought that I would have had the need to, and it has come in quite handy. The Flashlight is really quite nice to, and very powerful, the only piece I could possibly fault would be the lantern and that would be that it’s a bit of a lightweight construction compared to the other two pieces. However, the whole set is very nice in light of the price.