Had this a few months now and been running constantly off my solar. Uses hardly power once up and running. I just chilled it on the mains indoors to get it down to temperature, then put it in the van. Can freeze, but if you do that, the chilled section is quite small. The other way round would be better. I kept the ploystyrene base packaging as extra insulation and to keep it in place in the van cupboard. Works great. Paid _225 for it, and very happy with it. Be aware that this is an Alpicool 35l model. It does have the LG compressor too, which is a bonus. The slightly smaller and slightly larger versions do not have as good reviews.