4 ms·
A123 cells are about 180wh per kg, hes using 20ah 4 at 104 cells in series. so thats about 104 3.7 = 396 volts at 120ah. multiply that together you get 47kwh of
by ricksta 14y ago
A123 cells are about 180wh per kg, hes using 20ah 4 at 104 cells in series. so thats about 104 3.7 = 396 volts at 120ah. multiply that together you get 47kwh of energy. These batteries would be around 500lb.
These battery pricing must've came down a lot over the past couple years because this would've cost something like $40k couple years ago, but a quick google for pricing looks like the battery pack he is using can be bought for around $13k
pricing source: http://www.a123rc.com/goods-468-Excitingly+Powerful+A+123+20ah+PRISMATIC+CELLS.html http://www.a123rc.com/goods-468-Excitingly+Powerful+A+123+20...
- chrsstrm 14y ago500lbs in batteries and a quick search shows each of his motors is 156lbs. Since the gas motor he took out weighed 326lbs, he's got a net gain of ≈ 480lbs. That's a lot to overcome.
- harold 14y agoThese cars offer excellent balance, handling and braking from the factory. I'm guessing all of those may suffer after gaining that much weight. I had an '05 S2000. I wish I still had it, wonderful car.
- networkburger 14y agoAgreed. Best car I ever had (and totalled).
- kerryfalk 14y agoThat's a 16% increase in weight and a 312% increase in power. I used to be a frequent poster on s2ki (autocross an AP1), the weight isn't that much of a hinderance when you increase power that much. Braking and turning will suffer.
- nicholassmith 14y agoAdd on (or take off I guess) the exhaust system, gearbox and fuel tank and he's probably shaved a bit more off as well.