I picked up a VZ 6V mod from the classifieds and it has a 510 thread, which is the same as all my other batteries.. but I've never had anything other than the standard 750mah/1100mah batteries that I believe run ~3.7/4v. Is it OK to use LR atty's / cartos with 6V? I have some 2ohm and 1.5ohm single coils, and some 2ohm dual coils that I was going to use, and maybe a LR atty with tank cart.. I just wanted to make sure I wasn't going to explode something in my mouth.. 
Also, the VZ 6V says it takes the CR123a batteries (2x 3V = 6V).. I have some Lithium CR123A batteries (non-rechargable) that I use for camera equipment.. OK to use those before I order the rechargeables?
Thanks!

Also, the VZ 6V says it takes the CR123a batteries (2x 3V = 6V).. I have some Lithium CR123A batteries (non-rechargable) that I use for camera equipment.. OK to use those before I order the rechargeables?
Thanks!