I'm constantly going thru my SF batteries. I use a m4 with a very nice drop in mallkoff . Which is awesome. It has nice throw and a great flood but it eats 123 like lays potatoe chips. I've always wondered why you see cr 123 for sale at the stores but no rechargeables. Not unlike the AA, AAA's. Rechargeables ,You see them everyday.can I use cr123 rechargeables for this light, if not why. If so can I use on any of my other SF inco. And led lights.