Almost one year now and still going strong. It’s been running pretty much 24/7 off my solar system in my van. I have a 200w solar panel, two 100amp AGM batteries, and a 12v plug which the cooler plugs into. During periods of no or little sun, the batteries struggle a bit, but that’s definitely not the cooler’s fault. On eco-mode I can pretty much keep this thing going nonstop at 33-35 degrees. Only has enough space for a few days to a weeks of cold storage, but the bigger model would obviously hold more. Good buy and highly recommend.