I have had this one since July. (currently out of stock, but there are other similar ones on Amazon) I worked great in the heat of August with my Jackery 240 and 100 watt solar panel. The battery can power it for 24 hours without solar help. The solar panel makes a great sunshade for the cooler and battery. The phone app is good, and it is very quiet in eco mode. I use it as a drinks cooler in my bedroom with the AC adapter.