Does anybody know if the 110V plugs found in most airport parking structures are enough to stave off vampire losses (currently high on FW4.5 but reasonably low on FW5.0)? I don't know about the USA, but here in Canada the plugs at airports do not provide continuous power, they are on a timer and intended for winter use. When plugged into a block heater, they will supply power for a time, then kick off for several hours to save power. Will this intermittent power source be enough to counter the car's losses (especially in winter, when daily power loss could be much higher due to pack maintenance)? Would it trigger an error in the UMC and stop charging altogether?