Points to consider:
For any auto to work there has to be air flow over a sensor. That involves an opening in the battery in order for air to pass over the sensor. This is the achilles heel of auto batteries - the capacity for liquid to get into that hole, trashing the electronics in the process.
On a 510 type the hole is located right in the center of the positive battery post. All it takes is one major flooding accident to ruin the battery.
Then you have the "sealed auto" batteries. Nice marketing ploy, but if the battery was truly sealed it couldn't function as an auto battery at all. In a "sealed" auto battery they move the sensor air hole from the center of the battery positive post, to the side - in the area of the connector threads. This can make a flooding accident less likely to kill an auto battery, but not impossible.
Last I checked "sealed auto" batteries are only available with 808 threading. That means maintaining another set of devices specifically to match that threading.
Keep in mind you have no control over your vape experience - the sensor is in charge as to when it starts firing after you pull on it and how long it fires while you draw.
Sensitive auto batteries can behave badly and fire in a gust of wind, near a fan or air conditioner - in your pocket or in use. They aren't what I would call car friendly with the windows down.
Someone will chime in (please) with manufacturer and seller info. I know Joyetech is still making 510 and 510 XL auto batteries. Most places were discontinuing the Joyetech eGo size auto batteries going back a couple years so I'm not certain if they are still being manufactured. Sorry - drawing a total blank right now on who makes/sells the 808 auto batteries but they are still out there.
