rjxj wrote:
I have one that came with a used motorcycle and I realized the same thing after trying it. I didn't know they were that pricey either. It's a keeper.
I bought a Yamaha TW200 from a private party in San Diego a few years back, 330 miles on it. Came with a battery plus Junior. Don't know why but that motorcycle and it's electrics tended to really boil the water out of the battery over a gallon and a half of gas riding around. It wasn't the Junior doing it, it was the voltage regulation while riding around that was, I think, pretty poor. Electric start battery was only 7Ah on that bike.
Still have the Battery Tender Jr. I've no idea if it is temp compensated.