18650 magnetic holder for charging

I wanted an easy way to insert and remove batteries for charging. I modified One_Ying's battery holder design to use magnets as the contacts. I had some magnets from a damaged brushless motor, I made the holes for the magnets are about 2.5 x 7 mm. Magnets cannot take a lot of heat, so I wrapped a wire around the magnet and hot glued it down, it works fine, soldering would have been much hotter than the hot glue, and I'm not sure if it would stick.

I also found out that most of the RC model b