Thanks to an ECF member, I was able to locate a Kanger T4 for my KR808 slim batteries. The problem is the US supplier is charging 12.95 for 3 of them. In my opinion that is over priced as the suppliers I have found selling them in the 510 threading is around 2.50 a piece. Does anyone know of a China supplier I can purchase these from. I have been using the same one and I'm on fill #15 with no issues at all and will continue to use these. I figure I am better off to just buy 100 of them and never worry about running out or paying 12.95 plus shipping for 3 of them. Any how if anyone can please advise of an over seas supplier I can purchase from it would be greatly appreciated. Thanks in advance for all the help.