My panels shall normally run this fridge easy. 380 watts, by 18 volt output, 21 amps an hr. Feels like my solarsystem wouldn't work propper if battery gets discharged. I got a 250 panel ac with ac- dc contverter. 130 Watt panel with ctek 250ds dc to dc. Output of ac-dc converter is connected to ctek input. Ctek says its connected propper...