Can you post a picture? From the one on your other thread it looks like you have Schumacher battery straps (I have them on my Mid as the Kyosho ones were a bit rubbish)
Is it these you mean? - Part U744 on the linked Bosscat exploded diagram - they are still available on teh Schumacher website.
http://www.racing-cars.com/images/Te...t_exploded.pdf
If I've got the wrong end of the stick feel free to ignore me!
Cheers
Graeme