Last week when I picked up my MS from the service it had a nice full charge. After one day in my wife's ICE the first thing I had to do is floor the MS The traction control light went on at 30 MPH ! I was wondering how acceleration is affected by the battery charge. The kw/h shows the same 320 if the battery is full or almost empty (I know it gets a dotted yellow line when below 40 miles to restrict the kw/h). But something must go down with less battery, is it the volts ? How does the battery % measure work ? Any explanation please from you smart physicists out there Did anybody do acceleration tests at different charging levels ?