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by keefe8
2166 days ago
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> The resistance of a 400 volt, 250 Ah NiMH battery is around 180 milliohms. The same battery built with venerable NCR18650Bs (original model S) is 68 milliohms. That's a full 7x improvement Power dissipated by resistance is only linearly (not quadratically) related to resistance when current is relatively fixed: P=(I^2)R. So reducing the parasitic resistance from 180mΩ to 68mΩ is only a 2.6x improvement, albeit still quite significant. |
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