Good morning, Sidewind;
While finding a new replacement battery pack can be a challenge, getting the one you now have rebuilt is a very practical solution to restoring it to normal working condition. Two names I can recall while sitting here at the computer are the E. H. Yost Company, and The Ni-Cad Lady. Yes, both of these are in the United States. There are other companies out there also who will rebuild a Ni-Cad battery pack for you. Check to see if there is one near where you are. Otherwise, you can use your computer to look up those two company names and ask them if either one of them can help you.
Enjoy;
Ralph
Latte Land, Washington