BTW dripping is not recommended on auto batteries.
Use a manual battery with a well-sealed threaded end
510 - use a 510 manual or 510 mega xl manual with 510 normal (non-T) standard resistance atty and drip tip (and if you have 510-T do not charge any other 510 or EGo batteries ont eh 410-T charger cable - it will fry them)
KR808D-1 - the current Vapor4Life and standard manufacturer manuals should be fairly well sealed, and the Smokeless Image Volt manuals are totally sealed. Use a standard resistance DSE901 atty with no adapter (or 510 standard resistance w/ an adapter) with a 510/901 drip tip
It's not perfect for testing unless you have a lot of clean attys. With one you can blow it out between flavors then try the new flavor. With totally sealed manuals (and i would only do this if you have a spare atty) you can blow out the atty and run water through it, shake and blow it out, blow through it a it to dry it, reprime, wait and try another flavor.