Sunday, May 27, 2012

RE: [Electric Boats] Re: 300 mile range at 60mph plugin

 

> 300 miles at 60 mph takes 5 hours. Say it takes 20KW to produce that speed. (About 30 hp). Then it would need a battery with 100 KW-hr usable.
> I am skeptical.

ACP has been in the EV product development biz for a long time now and is widely recognized in EV circles for its technology.

And Tesla Roadsters have demonstrated 220+ mile range now since 2008 or so ( decent analysis and curves here: http://www.teslamotors.com/blog/roadster-efficiency-and-range ).  At 60mph, the Roadster requires 250wh/mi.  Assuming similar performance in an ACP vehicle, you’re looking at needing at least 75kwh usable.  In the case of the Roadster: “The typical full capacity of a new battery pack when charged to 100% in maximum range mode and discharged steadily over 3 hours is about 55kWh.”

 

While it would be a challenge to achieve 50% greater range performance than the Roadster at 60mph, I don’t see it as unrealizable given deep enough pockets, the right engineering team and the latest batteries.

 

And when it doesn’t work out, I want the battery pack for my boat!

 

-Myles Twete, Portland, Or.

 



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