I can’t find anything on this battery, I searched for a 19500 cylindrical battery because when I didn’t add the cylindrical part it came up with a bunch of phone batteries, but it looks as though you are not the first to wander about or look for this as I found two conversations on the subject. I know these aren’t on the stealth, but it states that they were looking for the 19500 also…
I also found a list of known batteries on Wikipedia and it does not have a 19500 listed under cylindrical li-ion rechargeable batteries…so I think this search may not produce anything you can use and you should probably just consider buying a new one…sorry to be a bummer
Depending on where you are from, there are several places that have decent prices on them…I don’t know if you order from Gearbest, but they have the red/black one for only $16.59 and the black/black and black/white for $27.21 and the blue/black for $31.34
Great! I really wanted to suggest that you get a new mod with replaceable batteries, but I didn’t want to offend you because I thought “well if he really wants to go through all of the trouble of finding this battery and replacing it in his mod that isn’t very expensive to just buy a new one, then maybe he doesn’t want replaceable batteries!!” So I didn’t say anything, but I think that route is your best bet! All of my mods have replaceable batteries because I would hate to lose a mod that I loved just because the battery dies!