The GoldWing battery bit the dust; after shopping and finding the expected insane motorcycle battery prices, I took a battery out of one of the cars and put it in one of the saddlebags on the GoldWing. It has NEVER cranked over so fast!
There's a lot of individual variation in bikes as far as proper charging or overcharging; some charge to more optimum levels than others but all that I've ever owned tended to overcharge thus requiring adding water to the cells periodically.