DIY 12V batteries rock! Use vinegar, saltwater, or fruit to create power. Teach electrochemistry & sustainability through hands-on fun. Spark curiosity, reduce waste, and explore energy cheaply.
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It is not entirely free, but it is quite cheap, at least much more than we currently pay it in most countries. It lasts longer and more sustainable over time.
Let's free from the system!
I got it, thanks for the explanation.
Yes, the less government in our lives, the better.