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Old 04-04-2011, 12:41 PM   #14 (permalink)
NeilBlanchard
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I think the two Optima Redtop batteries that are used on Electrathon vehicles weigh about 45 pounds? And I'm fairly sure they provide ~1kWh, so at 33.4kWh / gallon, that results in about 1,500 pounds of batteries to equal 1 gallon of gasoline?

The 60 lead acid batteries used in Dave Cloud's Dolphin weigh 33 pounds each, so the total is 1,980 pounds. He has driven it ~200 miles, and those batteries are used... I think that is about 30kWh, so a little less than 1 gallon equivalent at 1 ton.

The bottom line is I think your initial weight estimate is about 2X too high?

Typical lithium cells would weigh less than half of that per "gallon".
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Last edited by NeilBlanchard; 04-04-2011 at 12:48 PM..
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