[Classycrusader]

So I was considering converting a g35, mainly because with the factory aero kit it has the same drag coefficient as a model s (.26) and that's before you plug up the grill that's used for the intake.
My big problem though is trying to use the battery calculator thingy. converting ev power is way different than what im used to in converting hp and such.

So my main question is how many miles of range can I expect from let's say 1 lithium ion car battery? (or 10 if it's easier)
I know it's relative to weight, drag, and powertrain loss but ballpark would be great. Or if there's a rule of thumb im unaware of, I use to hear that 1 lithium ion pack was the equivalent to 10 miles of range, does that seem right?

I saw that the standard model 3 has a 50kw battery pack for the 200+ range, which sounds great. I want to use an optima yellow top, specifically a d51, and can't seem to find the wattage/kw. From what I've found it's maybe 9kw? that doesn't sound right though. Basically if I had 5 or 6 of the optima batteries then that's the same a the Tesla battery pack? Is that right? I'm not sure but I think im missing something.

 

[Classycrusader]

all duly noted. what would be a good lithium ion battery? I'd like to use car batteries because they're more easily refurbished when they go dead.
Second, how much would, let's say, the d51 optima give?

 

[Classycrusader]

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.

 

[Classycrusader]

Apparently you can't so you're not much better, let alone helpful

 

[Classycrusader]

What's this forum, here for otherwise? stroking egos? or helping each other. Sorry if I was mistaken for the latter rather than the former.
As I mentioned, I can not find accurate numbers for the d51, thank you for pointing out that it's not lithium ion but I'm more interested in car batteries. I cannot equate what you mentioned in you're post accurately because I do not have a degree in electricity so I was hoping you could help me. I do not mean to come off as an asshole, if I could ask you for help on this since you do seem to be educated in this subject, id be really appreciated.

 

[Classycrusader]

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

 

[Classycrusader]

Thanks everyone, guess car batteries just aren't feasible, shame I really wanted a refurbish-able battery. nicolaskn, mind me asking how much range you get and where you put them? That sounds like a better option.

 

[Classycrusader]

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 😬

 

[Classycrusader]

Try car weight divided by ten, divide the Wh of battery by 330
5200/330=15.75 miles
You did the math right. 3300/10*5.2=1716 the formula went wrong somewhere along the line.
battery technology has gotten better but 5.2 kWh is still 5.2 kWh

Later floyd

Thanks Floydr that sounds a lot closer. I'll be saving that on my list of equations for the rest of my life. I'm just using 2 batteries to see how many I can expect for 2 so I can know what to expect when I add more later. I know you get more running in a circuit or parallel but its been a long time since electric class (as you can tell), you always wish you pay more attention later in life. Anyways, figured id just run lowest estimate atm.

Remy_martin they're LG chem batteries from ev west (LG CHEM Lithium Ion Battery - 60.8V, 2.6kWh, EV West - Electric Vehicle Parts, Components, EVSE Charging Stations, Electric Car Conversion Kits)
They seem pretty good for size and weight but im going to check out the Nissan Leaf batteries and see how feasible they are. Someone here mentioned they're also using a g35, be interested to hear his numbers for reference.