Yes with the stock muffler almost all the time except maybe WOT. With my can about half the time. Yesterday had it on full blast (with can) for 6 hours and works awesome. Never ran out of battery and it was cold around 15-20F.
It must be since I usually don't leave the parking lot. When I do I stay on the groomed trails at the posted speed limit. Ultimate goal is to ride long enough for my tofu sandwich to heat up in the muff pot.