Before you buy kangertech e-cigs, please notice that except the all-in-one series kit, all of the original Kanger mod/kit comes with no cells, which means you need to purchase the cells separately. And before you buy the cells, please check out the battery type in case can not work. If you are not sure which battery to use, you can leave a message here or contact with our facebook page: https://www.facebook.com/kangertechnology/