We run the Dometic Fridge/Freezer on LPG when parked on site at night and we rarely use EHU. As I'm not an electric expert could anyone tell me, from studying the plate in the fridge, what power is required to run the fridge/freezer overnight and how much of a drain is it on the leisure battery. We run the temperature on a middle setting, three bars out of 5, and both compartments are usually fairly full. Or is the power used so minimal as to be irrelevant? Also how much power would a Combi 6E heater consume for a few hours at night now that the temperatures are starting to fall – it's thermal output is 1800W and it says power consumption at 230V is 3.9A/7.8A. Any help appreciated.