I'm posting this for a friend who has a a new battery for sale. His model Honda isn't a Goldwing.
Firepower brand. C50-N18L-A3, replaces Y50-N18L-A3 for sale. Brand new in the box dry charged with acid. Bought the wrong battery by mistake. $50 OBO. contact Scott Lambert, Cincinnati, OH (s.lambert@twc.com)