3 ms·

What's the weight of the 104 batteries and the gain/loss after removing the gas engine and replacing with electric?

by chrsstrm 14y ago

001sky 14y ago
s2000 is a rwd car and likes to spin. this is not a trivial question.
- 001sky 14y ago
  "The battery pack will consist of 416 cells with 4 cells in parallel and 104 in series...The batteries will be A123 20Ah prismatic cells. " Approx 460 pounds just for the cells.[1] ___________ Notes: http://www.a123systems.com/prismatic-cell-amp20.htm http://www.a123systems.com/prismatic-cell-amp20.htm ~500g each (1.1 lb) based on a quick google [tbc]
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 ago
  500lbs 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 ago
    These 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 ago
      Agreed. Best car I ever had (and totalled).
  - kerryfalk 14y ago
    That'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 ago
    Add on (or take off I guess) the exhaust system, gearbox and fuel tank and he's probably shaved a bit more off as well.

What's the weight of the 104 batteries and the gain/loss after removing the gas engine and replacing with electric?

001sky 14y ago

s2000 is a rwd car and likes to spin. this is not a trivial question.

001sky 14y ago
"The battery pack will consist of 416 cells with 4 cells in parallel and 104 in series...The batteries will be A123 20Ah prismatic cells. " Approx 460 pounds just for the cells.[1] ___________ Notes: http://www.a123systems.com/prismatic-cell-amp20.htm http://www.a123systems.com/prismatic-cell-amp20.htm ~500g each (1.1 lb) based on a quick google [tbc]

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 ago
500lbs 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 ago
  These 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 ago
    Agreed. Best car I ever had (and totalled).
- kerryfalk 14y ago
  That'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 ago
  Add on (or take off I guess) the exhaust system, gearbox and fuel tank and he's probably shaved a bit more off as well.