That, the std batteries, is one of my primary reasons for moving to a PV (not sure if the nomenclature is correct, but I think you know what I mean) from an eGo... The absolute best life I've gotten out of any eGo battery I've had (and I've had a bunch) is about 3 1/2 months... Now, granted, I vape a 'lot', but still -- 3 1/2 months?
So a few weeks ago I made the move and got a Vamo for myself and a mini-Lavatube for the wife since it's much lighter in weight and a bit smaller overall than the Vamo which she didn't care for... Now I've got standardized batteries that are far less expensive than the eGos and will, I hope, last a bit longer... But, if not, what's a replacement cost of around $3-$4 @ as opposed to $18-$20?
Also have a V8 Gripper coming and 2 mech mods -- all using the same batts... Simplicity is Golden...