Monday, Dec 26, 2016 at 09:53
Yep, as unsure about whether OP has both fridge and freezer, I would say if it was just one or the other, I'd certainly use it as a fridge set around -1c to -2c and that should be fine for up to 2 weeks of food / drink needs.
Any longer and a quick cryo and you'd be set for 4 - 8 weeks managing fine out of a fridge, which is getting a bit unnecessary for resupply in most travelling situations.
If the OP has both fridge and freezer, you can manage better and take pressure off the fridge power by taking out a couple of days frozen dinners / snacks, etc and placing in there as needed, helps keep fridge compressor from operating as much.
I wouldn't like to be trying to make the sealed type chemical type ice blocks etc to daily put in an ice box with frozen dinners etc to keep drinks adequately cold.
It just wouldn't cut it from experience with these, even in really small 6 pack type coolers.
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