I switched over to a 12v battery a couple of years ago and it is still going strong with regular recharging. It definitely lasts longer than the 4 c's that I was putting in it but it really didn't matter because my memory card always filled up pretty quick. I did notice I was getting more night shots with the 12v, maybe the flash was harder on the c batts. Years ago I picked up some of those surplus ammo cans from Sportman's Guide and cut holes in them for the camera and plenty of room left for the 12v. Attach some chain and hang. Hope this helps, Frank