Ok, I can't post this in the batteries forum. I've have had pretty consistent issue with stacking batteries for 6v vaping. At first it was with cr2s with my copper, then when I got my silver bullet, the cr123s aren't doing much better. After a charge they usually only last me about 1 to 1.5 hours. in either my Silver Bullet or Reo. I've heard several people say that they an get them to run all day. I'm don't know what I'm doing wrong.