sounds like you need a Chuck.
Check out
THAG BUILT: A Wolf in Sheeps Clothing! and, if you have a week to read it, search for the "how to spend a saturday" thread
1. long battery life .............................CHECK, up to 4 days on a Chuck(3000mah 18650 batteries...)
2. 5-6v for a kill vape .........................CHECK, 3.7 or 6v on a Chuck...
3. looks cool .....................................CHECK, Coolest looking PV's out there...
4. won't die on delivery .......................CHECK, built like a
tank...
5. uses a standard or easy to get ATTY..CHECK, 510, 901,801, or 401...
6. the best of everything......................CHECK, just check the "saturday" thread...