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Lauri
RC-Monster Carbon Fiber
 
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Posts: 61
Join Date: Oct 2009
Location: Estonia, Europe
01.24.2010, 07:12 PM

My laptop only lasts about 3h on batteries. I think any electric passanger car should last longer. So considering that passanger car cells could be about the same as laptop cells :)

Ok. I think it is stupid to have 10 000 of some small cells but its up to what is cheaper and more efficient to use at some time. Like said, you have to plan ahaed many years when building a car. It would be smarter to use something like those 20Ah LiFePO4 cells just to have fewer of them.

And overheating the cells when using them? Well... it comes down to IR of the cells and the power you take from them. It would be wise to use such cells that don't need cooling. It is a simple high-school fysics equasion to figure it out how much heat is generated by driving a car.

I think that Tesla is overkill considering its acceleration and power needs. Don't know about Tesla but I'd like to have a mode that limits the power to a regular passanger car. No need for better acceleration than 9sec 0-100kmh (0-60mph).

I don't like comparing RC with passanger electric car. Those are very different things. One is high performance 10-minute running and another has totally different need for the batt.

Don't belive there will be high voltage charging stations available in 3-4 years. You could have one at your house but then you usually don't need to charge the car fast...
   
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