First week vaping attended sons wedding in vegas. Sucked both batteries dry. Was about to by a pack of analogs but the they have a kit for 15.00 in the gift shops so bought that instead. I is called Cigarex. Comes in box that looks like a pack of analogs with 1 battery, 2 cartos and a usb charger. Total crap, lost of vapor but absolutely no taste, none. The baterry however lasts forever compared to my 510's and after filling with my own juice it's not bad. Would like to use as backup but have absolutley no idea what cartos to buy for it if needed. Anyone have any idea what baterry I have. If it helps the battery has the male threads.