I did a bit of searching and came up with a guy who put this battery (1.4 lbs.) http://www.zbattery.com/ub1213.html in his WR250 and said that he can start the thing 8-10 times with it, and it rapidly recharges. I usually only use the e-start a few times a day anyways and with shipping it was $15. I have a 450, but I'd bet that I can still get 4-5n starts out of it. Anyone try this battery? It is a sealed lead acid battery. The stocker weighs 7-8 lbs, and is up high, so it is a well spent $15 if it works. I'll let you lnow how it works. XRYoda'