I indeed called one of our sponsors this AM and Battery Boys did have a used battery for $50+. It is warrantied for 3 months. I put it in the cart, took cart for a 20 minute ride and now cart is charging. I will do some tests and see how the pack reacts, to see if the battery is a match.
It is an Interstate battery as they had no used Trojans, same 20 AH rating as my Trojan T875. I sure hope the 5 Trojan's in the existing family can adapt and accept this strange looking adopted child into the pack
As a side note, had fun talking do David and Ken. Great guys, looks like a quality outfit as many of you have posted.