[Electric Land Cruiser]

Coefficient of drag is just one part of aero drag, the other part is frontal area. Frontal area x Cd = actual drag. Lots of people just focus on the Cd and not the frontal area. For instance a Miata has pretty bad Cd, but it's itty bitty tiny so it has low drag.

Basically if I had 5 or 6 of the optima batteries then that's the same a the Tesla battery pack?

Absolutely not. I like your confidence though!

 

[Electric Land Cruiser]

calm down im just asking for reference, ill look into the real lithium ion but as stated I'd prefer lightweight car batteries because it's easier to refurbish them and coming from the ICE world I know that optima is the best in terms of weight.
I can't seem to find the exact numbers I need for the optima d51 atm. And like I said, I am not educated in electricity, I'm a mechanical engineer, not electrical. That's why I came to you for help. If I understand what kind of range I could expect (roughly of course because of factors) with one good car battery I can work out the rest through reverse engineering. That's why I came to you, for help, not flaming.

You are totally off track. I'll try to help.

Lead is dead. If you fill up your G35 with as many Optimas that you possibly could fit it would go 20 miles range, maybe. The optima batteries or a shitty Walmart battery, it doesn't matter.

If you want to build an EV hang out on the forum and learn.

 

[Electric Land Cruiser]

im trying to but everyone isn't really giving any data, info, or help. What batteries would you recommend? I remember talking to someone that had a square back and they said each car battery for them was about 10 miles worth of range. Probably because of the low weight of the car and less mechanical loss being rear engine rwd

I use Nissan Leaf batteries. Check out my thread I have been documenting my build for the better part of a year.

Others use Chevy volt batteries. Some use Tesla or Mustang. Some people use off the shelf.

The best Optima Red Top is like 75Amp-hours at 12 volts. 75 x 12 = 900 watt-hours.

900Wh is enough to run about 4hp for 3 minutes.

So if you have 20 Optima Red Tops maybe you can move your G35 a block.