This also charges batt's for yaGet a PCC (portable charging case). I just got one with my 510 and it keeps me pretty organized - the PCC is designed to carry an atomizer, 2 carts and a battery. Also helps me prolong the life of my atomizers as I change them when I change my battery. I believe they make a PCC for the m410 and the joye510 models.
What is that case thingy that women always carry around....oh yeah a purse. U could use one of those. Keeping track of an e-cig is probably like keeping track of feminine products.(i'm guessing) Just don't get the 2 mixed up. Look awful funny lighting up a tampax