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I cant imagine many OEMs using nimh. It is a proven technology and it is a pretty good one too. But, everyone has pretty much gone to lithium now. EVs especially need to increase energy density, not go backwards. Hybrids have gone to lithium because prices are falling and they can get away with lighter and smaller packs. Perhaps we'll see more 'budget' hybrids using nimh? I believe the Prius and its variants use nimh simply to keep costs down. However, everyone else I can think of is using lithium.
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