I had a HF solar kit on my bus. It worked well for my needs, which were minimal. Also had a (older) 12 v cooler by doorman, which was similar to the Koolatron. It drew EIGHT (8) amps an hour, and ran non stop. A true 12 v fridge might draw 2-3 amps, but only around 30% of the time. The cooler would draw down my 125 Ah battery in about 6-7 hours without the solar, about 15-18 hrs with it. The solar set ran my 7" lcd tv/dvd AT NIGHT, PARKED UNDER A STREETLIGHT, without TOUCHING my battery level. I had no trouble running my O2Cool fan and led lights off the setup either. At $199 reg price, and $150 on sale ( COMPLETE with EVERYTHING except a battery and inverter), its not a bad starter set, and worked for me and many others.