Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - So does it take almost 4000 lb of lead to= 1 gal. of gas?

NeilBlanchard · 04-04-2011, 01:41 PM

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".

04-04-2011, 01:41 PM	#14 (permalink)
NeilBlanchard Master EcoModder Join Date: May 2008 Location: Maynard, MA Eaarth Posts: 7,907 Mica Blue - '05 Scion xA RS 2.0 Team Toyota 90 day: 42.48 mpg (US) Forest - '15 Nissan Leaf S Team Nissan 90 day: 156.46 mpg (US) Number 7 - '15 VW e-Golf SEL TEAM VW AUDI Group 90 day: 155.81 mpg (US) Thanks: 3,475 Thanked 2,950 Times in 1,844 Posts	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". __________________ Sincerely, Neil http://neilblanchard.blogspot.com/ Last edited by NeilBlanchard; 04-04-2011 at 01:48 PM..