It is possible to solder neodymium magnets to your charger output. NOT MY PHOTO (I’ll never use an ultrafire cell lol) but it shows what I’m talking about. Of course, even though I LOVE my hobby charger too, with this set up, you can only charge one cell at a time. If you have the appropriate balance adapters, you can charge multiple cells in series. THIS BLF thread might be useful. 