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REGENT Begins Sea Trials of First Passenger-Carrying Seaglider
(www.regentcraft.com)
Technology for a Solar-Punk future.
Airships and hydroponic farms...
What are "end-of-life batteries" in this case? Is the plan to reuse used batteries that are no longer fit for automotive service?
Batteries loose capacity over time. So "end-of-life batteries" are batteries at the end of their designed lifespan, when the capacity is at a low point.