I have had 3 over the last 20 years. I replaced the the standard battery with a newer style very light weight battery my motorcycle riding brother suggested and have never had any problems with any of the models I have owned. Cold start never an issue. My present 750 king quad has the power steering and has been awesome. I am around 200# and carried 3 does out (all at once) on it last season with no problems. Used the winch to load a 350# hog on the back and also hauled it out on another occasion no problem. Wish I could remember the name of that new battery as it is going on 5+ years now and the old lead/acid versions never lasted more than 3 or rarely 4 years. Nothing but good things to say for the King Quads. I think the fuel injection and never using anything but real premium gas is also important for really cold starting issues.