One is a SMOK & what I think the issue is a charging issue , as in the connection is pushed in, but that's just my guess , also one of the 4 Allen screws is stripped or I would have attempted the repair myself. The Second is the ICIGV9 with the color changing Led on the top , the issue w/ this one I'm not sure of, the Led screens in working condition but I think the issue may be w/ the top connect to the atty/ tank.