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There's alternators all over the place though. "Just" need to figure out how to get one turning.

In the same way that speakers are microphones, all motors are generators, albeit probably with very low efficiency.

Yeah, that's where I started, but if you are foraging for batteries, you probably aren't aiming so low.

I guess reasoning along those lines, you're looking for literal generators that can be adapted to whatever fuel you have available.

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