I just got the vamo v5, it came with a kangertech emow tank and two 18350 batteries from fasttech.com. The first day I started vaping it was great no problems at all. Second day I got that burnt taste all day, I tried a different tank and same thing. So what I did was take one battery out and it works perfectly fine now. So what I would like to know is can I only use one 18350 battery or is there something wrong with my vamo????