My concern with my winter get home bag is that drinking water stored in the car will freeze. I hate that it has no emergency water supply in cold months.
Emergency water doesn't freeze. Get the packets of the "Blue Cans" - its all distilled water, which is fine for emergency situations. The rigid gallons are not made to last longer than 6 or so months and will even randomly split and leak on a shelf. Get the long-term stuff.
I'm also seeing a lot of people that don't pay attention about food. Forget the cliff bars since they'll go bad in less than a year in the heat. Get the Coast Guard regulated food bricks. $7/8 for a 3600 kcal brick that'll last 5 years in your car without issues. After that 5 years, replace it and crack the old one open and taste-test it to remind you of how it tastes. I did this with my kids so they knew how it tasted, both basically said it was like a cookie.
If you just learned 2-3 things here, please do research on YouTube or such for car bags. It'll blow your mind in just a few minutes for just about any random video.
I have solution for this but I have not tested it yet. I keep a small cooler, water bottles, tin foil, and an emergency candle. I would line the inside of the cooler and wrap the bottles in the foil, then try to melt with radiant heat from the candle. Seems like it should work.
If you just keep the bottles in the cooler, they will never freeze. Im a contractor so I have water with me year round. Stays pretty constant temps in the cooler.
It does eventually. It takes a lot longer, but once we hit a week of straight of weather in the 20s, it will be frozen for sure. If you're just taking water out with you for the day then it won't, sounds like that is what you might be talking about. I'm keeping a case in the trunk and I don't touch it.
Candle will use all the oxygen in the cooler and then go out. You can also calculate the fuel needed to melt a certain amount of ice and it's nontrivial.
Fire is the answer, maybe a butane stove.
I wasn't planing on closing the cooler.
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