Tested the portable solar panel 120w with dual 75a battery’s (total 150 ampere hours) last weekend and it worked great ? It was two sunny days, on the night the power drops and is taken from the battery’s only. When sun goes up again on the morning, the solar panel charges the battery’s full again (green). Our 12v fridge was running all day and all night 24/7. A couple of rainy days would be problems I guess. But then I could run the engine and the alternator would charge up the battery’s after couple of minutes. ?