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malcolm · 07-19-2008, 02:37 PM

Nice one. 46 kWh over 4.4 hours for about $5,500. The thing I'm not sure about is how much of the energy delivered at, say 40 amps ends up in the battery and how much has to be consumed by the battery cooling system.

I know it's about 16 or 17 kWh extra if you recharge at 70 amps. I guess all we can do is assume a linear relationship - so 40 amps will divert about 9.5 kWh to cooling leaving about 36 kWh to go to the battery. That would get you about 150 miles (EPA Highway) in the Roadster (ignoring the extra drag)

Anyone know if you can you fire these things up anywhere? I notice it is rated at 80 dB.

07-19-2008, 02:37 PM	#3 (permalink)
malcolm Senior Member Join Date: Nov 2006 Posts: 946	Nice one. 46 kWh over 4.4 hours for about $5,500. The thing I'm not sure about is how much of the energy delivered at, say 40 amps ends up in the battery and how much has to be consumed by the battery cooling system. I know it's about 16 or 17 kWh extra if you recharge at 70 amps. I guess all we can do is assume a linear relationship - so 40 amps will divert about 9.5 kWh to cooling leaving about 36 kWh to go to the battery. That would get you about 150 miles (EPA Highway) in the Roadster (ignoring the extra drag) Anyone know if you can you fire these things up anywhere? I notice it is rated at 80 dB. Last edited by malcolm; 07-19-2008 at 02:40 PM..