No problem, for two AA host , pick unprotected batteries, protected ones are ~2mm longer and when two are put, you have 4 mm of extra and you most usually won't be able to thread the tailcap, so get unprotected to fit it right.THANKS!!!! Yeah I will Just order these. I was going to hand file out a host that fit 2 AA in order to make it fit cr123 batts. Thanks again for the great advice