good tomorrow, since I recently had a small discussion with a buddy, whether the ventilation in the car eats a lot or a little sprite, I ask right here, I thought to myself such a fan engine has how much watt…15? 30? mMn it should hardly make one, if not none at all, difference, whether on or off during the ride (assuming stage 2 continuous), or do I see this wrong? light? 55W*2 makes 110W/13,8V=approx.8A (incl. rear lights)…well, light should be marginally on the consummated h effect, I think. climate is clear, the quick times a few KW, that makes itself noticeable in the consumption, no question. radio? 4*20W output (very optimistic value) makes about 200W (estimated) total recording. a standard radio without additional amplifier armada should therefore, as long as not operated at the limit, hardly significantly influence the consumption. rear disc heating, how does this look like? can I now clap the air around the ears almost no has had an impact? mfg