I have not put all the electrical accessories I want yet but you can bet I will putting a bigger battery on mine since the battery compartment will accommodate one. I see in the owners manual that the alternator output is 450 W @ 7000 RPM. My experience with my 2013 Sportsman 400 with a winch running the plow, hot grips, thumb warmer, and lights on the low voltage light came on at least twice over the course of the winter.