I'll be picking up my new 2021 Hawk Shell in December and am trying to get my electricity usage figured out. The shell is bare bones with only a heater, cook top, Fantastic Fan, and LED lights. It will have the standard 75 Ah AGM battery and I will be adding a portable 100W solar panel that can be aimed at the sun during daylight hours. Given the 50% draw down limit of the battery I will have 37.5 Ah available. I'm getting a Dometic cfx26 DC fridge. Here are my simple minded calculations for power usage. The only constant drain on the battery will be the fridge at .8 Ah. With no sun light for 12 hours a day that equates to 9.6 Ah drain between solar panel charges. I will run the heater fan no more than an hour a day, and the Fantastic Fan no more than 2 hours a day. i don't know what the heater fan and roof vent fan use but it seems that since I have about 27.5 Ah left after deducting the fridge power needs over night I should have plenty of power for my needs. I'm also figuring that my solar panel at only 50W real output would generate 33.3Ah in the course of 8 hours. This seems to be too good to be true. What am I forgetting, or getting wrong with these calculations?
Thanks,
Kim
Thanks,
Kim