I keep stocking up too.
I have 2 stacks of 18650 Murata batteries, 20 in each stack, and I rotate them ->charge stack 1 -> use stack 1 -> charge stack 2 -> use stack 2....
About a month or so ago I bought my first 4 pod systems, Vaporesso Luxe Xr, along with 6 packages of coils, and 6 extra...