[remy_martian]

Pay for a round of golf. Rent an electric golf cart. Go to the back 9 and lift the seat up. There's your Optima battery tech and the reference performance of a vehicle you can build with it. Make yours heavier than that and things turn to shit for speed, acceleration, and range proportionally. Do they teach "proportionally" in furnace duct school?

You're about 20 years late to the party with your "car battery" constraint.

 

[remy_martian]

That's a great equation to have (even if its ballpark). I think I did it wrong though because I did 3300lbs/10x 5.2 (2 battery cells from ev west) and got 1716. Battery technology must've gotten a lot better, or more probable, I did the math wrong 😬

5200*2*10/3300 = 31.5 miles on two Tesla MODULES (not cells), assuming you can find a 48V motor of sufficient power to run a 3300 pound car, and assuming the modules can deliver the sustained current at that power which they cannot.

So, you have a 3300 pound, 31 mile range, slow-ass, golf cart using two Tesla modules. Wrong battery for the job.

 

[remy_martian]

If you're using 2 of those LG Chem MODULES, that's 120V and 40Ah, which you might push to 120A for 20 minutes or so.

That works out to ~15kW or 20HP. For 20 minutes...

There's no free lunch in this stuff. Maybe you should do a motorcycle?