Another disgusting habit that replaced tobacco.
Yep, otherwise called 'e-cigs'. And they're really more of an alternative to tobacco - or not - as I've heard of many people who either start vaping 0-nic or go
to 0-nic. They vape for the thousands of different flavor combinations possible, and they can also aid in weight loss for those that want to quench their sweet tooth without the calories. I started at ~24mg/ml nic, but am now down to ~1mg/ml nic, with some 0-nic. I could probably just make my mixes all at 0-nic, but at this rate, I have decades worth of 'high-test' nicotine mixture in VG (vegetable glycerin) stockpiled up.
Unlike tobacco, they're not really that disgusting though IMO - as no smoke, or carcinogens, are ever involved. Sure, there are still disrespectful vapers - but then there there are also people that go around spitting all the time (which I find far more disgusting). There's also no stench or dirty ashtrays or cigarette butts, you still have your sense of smell and taste, there's no hacking up your lungs, and everything that would have at one time gained a yellow stain/film has that yellow film no-more.
They also can be quite a fulfilling hobby if one chooses them to be, as you get to play 'mad scientist' - mixing up all your own flavors, complete with glass syringes (with blunt dispensing tips) or scales -- and/or making your own coils (the part that heats up the liquid mixture). My latest trend is using a drill to twist up different types of wires together in various ways to make the wire for my coils. Then inserting my own wicks, usually Rayon (basically a 'purified' cotton), into the coil. So by doing this all myself, it's not only far cheaper - it's also fun to do.
Just like photography to me, I wouldn't say I'm the most skillful artisan with it - but darn if it isn't fun trying. :wacky: :joyful:
Rob got the description down as to the 18650 (as well as other lithium-ion sizes -- the '0' at the end indicates it's a cylindrical cell), with the slight clarification of the protruding + bump.. Some have a slight bump (called button-top), and some don't - and one needs to order the version that the device needs, unless it accepts both.
OH - and **
ALWAYS**
respect and treat your lithium-ion batteries with great care - whether they're in your phone, laptop (also usually a series of 18650's), or personal vaporizing device. Otherwise, Bad Things® have been known to happen. (Dell recall, anybody?)
Anyway, this has been your Public Service Announcement. We now return you to your regularly scheduled program, already in progress.