@AndriaD Where would a buy a battery? Heard so much on fake batteries that I wouldn't know where to look.
Are batteries safe to stock up on?
I got a pair of Samsung 25R 20A batteries -- very good batteries, to judge from how often they're recommended around here -- at ilumn.com, $5 each, and when you buy a pair, they throw in a battery box. ilumn.com is apparently a legit and reputable place to buy batteries; it gets a lot of good reviews around here. 20A are good to get for any of these moderately-high wattage mods -- say, up to about 50w-ish. I never vape over 9w, but I *have* had the experience of my mod turning itself up while riding in my purse (I really disliked the 17w hit I got by accident!), so it's a good idea to buy batteries that can stand whatever the mod can throw at them.
It's not really necessary to stock up on batteries, other than having several or more to "rotate thru" -- if you have more than you actually need, you can rotate thru them and they all last longer. Plus, batteries need to "rest" for a bit after charging, rather than being put straight into use as soon as they're finished charging. But 18650 batteries are apparently used in other battery-operated stuff, such as RC toys and gizmos, so they won't be going anywhere.
Andria