I have no problems using 3v, 3.7v nor 18650 at 3.7. The AW's are great for me.
Shipping/wait time per David, copied from another thread: P18, P16, P10 Update
The Goal is to have all pending P18/P16/P10 orders completed and shipped by monday. Chad and I committed to working over the weekend in a madness inspired, 48 hour Precise Preparation Fest. If the caffeine, machinery and will of mind holds up, I may be able to actually say theres no waiting on Precise Units on Monday.
Must go faster...
David
Not sure about 5v-but vapn's LR 306 idea is the way to get a feels like experience. I say 306- cause I like them-LOL.