usage

Hi all, I'm trying to figure out a good battery solution. I'd like to try to understand the power spec and real-world power usage of the electric starter. It looks like the starter only pulls 50A max? I'm not sure though!: The 2012 570 manual specifices a "E-START. ENGINE CPL. 0,45KW...

Has anyone had experience with "slipper" clutches on the Husaberg, specifically in off-road usage ? Steffan Merriman used one his Yamaha WR450F, maybe he is "on to" something. Thanks in Advance. Sincerely, Tom :) XR400 rider researching for a new bike.