I've ran Gerbings jacket, gloves, socks and grips on full for extended rides with no problems. Never used pants, but you should be able to get the math of what I used to compare to the draw of the pant.
Usually I keep the high beam off when I'm doing that, and ALWAYS carry a cable to jump start the bike... ( I use a 8 ft. wire that came from an old air pump I had with a SAE connector on it)
Hope that helps.
BTW, I've been to that dealer and agree....