Quote:
Originally Posted by TomcatMVD
I also heard a former head of the shipyard explaining how this sub's batteries were actually "recycled" and not replaced. There is a technical term for it but I don't know what it is, but basically if the outer shell of the batteries is deemed in good condition, then they just change the chemical components without actually removing and installing new batteries.
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Not sure if this is correct one, but atleast in case of marin diesel engines the process is known as "rebuilding". In practice you disasseble the engine, repair and replace components as necessary and then reasseble it.