Thanks for the feedback. The fridge has an on/off button and a button for gas/electric option. I leave it on the gas option. The temperature in Mammoth was in the low 40's, and I have an infant and toddler, so setting the furnace to a low setting is not an option for us. The battery was fully charged before going on our trip. It's a deep cycle group 24 Battery from Walmart. I have a 12 amp charger at home, so I will fully charge it before going on our next trip on the 4th of July. I will do some troubleshooting this weekend. Thanks