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50 comments on TOD:Campfire Overview and Guidelines
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50 comments on TOD:Campfire Overview and Guidelines
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NiMH AA batteries can last for hundreds of charge cycles and are easily recharged with a solar panel or pedal bike. You are correct that most things more high-tech than what could be repaired or rebuilt in a small-town workshop will eventually go away. Lead acid batteries can be rebuilt in a low-tech workshop, but it's a very nasty job.
Nickle Iron Batteries will supposedly last a lifetime.
Drawback is cost & efficiency is not as good as Lead acid,
but not a big deal for stationary applications - it's the cost of storage - add another PV panel.
They haven't been made in USA in decades but there are some imports - Google NiFe batteries
Perhaps someone will make them stateside again at a reasonable cost.