I had to make my own tx pack, because my radio is outdated. If I recall right (this was about 2 years ago) There were metal tabs already to connected to the cell, and i just put connecting wires between them. I then bought some big yellow heat shrink from the hobby store, and pulled a plug off an old busted servo (It's outdated equipment, so you can't buy the plugs) soldered it up and put it in. Works fine.