I am dealing with an electrical fault on my Sixty5 in another thread, but out of interest, now that I have converted my bike to kicksart-only and will sooner or later have to replace the battery, would it be ok to get a lighter-duty (smaller) battery, say, as fitted to non-E/S Bullets? I ask this because both the alternator, and rectifier/regulator units are different part numbers on E/S and non-E/S models.