This seems like a fun weekend project with to teach kids about how batteries work in a hands-on fashion. Instructables user egbertfitzwilly has published a how-to for a simple aluminum can, saltwater, and charcoal battery.
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This seems like a fun weekend project with to teach kids about how batteries work in a hands-on fashion. Instructables user egbertfitzwilly has published a how-to for a simple aluminum can, saltwater, and charcoal battery.
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OR – could be a life saver if your RV meth lab runs out of battery in the middle of the wilderness.