Quote:
Originally Posted by Daox
12V Trojan T-1275 has 150Ah * 12V = 1800 Wh of capacity per battery
40500 / 1800 = 22.5 batteries worth of capacity
we'll just call it 24 batteries to make it easy to split up into series/parallel
24 batteries * 82 lbs each = 1968 lbs
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You'll need more than that. The 20hr rate for 'em is 150ah, but to drag out your commute over 20hrs would require an average speed of about 2mph. The 5hr rate is 120ah so if anything you'll get less than that, and probably need ~3000lbs of lead.
Quote:
Originally Posted by Daox
So, as you can see, getting the Paseo to have a range of 45 miles @ 60 mph is no simple task. 24 batteries weighs almost as much as the stock car! I'm looking into if I can plug in at work or not. That would only require 12 batteries then.
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Only if the elevation of your work is that same as your home, your commute is pretty flat, and there aren't winds to screw with your energy consumption in one direction, plus you'll still need closer to ~16-17 batteries.
Aeromoddingthe crap out of the car like Basjoos would really cut costs and increase range regardless of chemsitry so that's first on the list IMO. I think you may be better off going with LiFePO4's from China stuff provided you grab a pack first and test it extensively to verify the manufacturer's claims, but the downside is a huge layout of ~$8,000-$16,000 for the pack depending on where you can charge it. If you do end up going with lead, I really discourage you from using the paseo stock, since even with extreme mods the car will be too heavy to stop/handle safely.
If you go with lead I recommend looking around for a small pickup truck with a similar price and junking/selling everything except for the rolling frame/brakes. You'll use that (no rear axle either) as your base, probably best with an old 4sp transaxle (lightest I've found) driving one of the rear wheels coupled to your electric motor with the aeromodded and roll caged (for safety) frame bolted on top. That way you get the ability to carry a lot of weight safely as well as the small profile/size of a compact car plus some extra room to make aeromods w/o having to extend 'em beyond the vehicle itself. If you do it well it should be able to handle a couple thousand pounds of batteries with plenty of room in terms of weight to carry passengers/stuff safely as well as use ~100-150Wh/mile cruising at 60mph on flat ground with no wind. With a bare frame you can also weld battery boxes under each side for easy access as well as a ton of weight down low which should be great for handling (think the Tango), and naturally a really good beefy cage up top just in case it somehow manages to flip. Anyway, a setup like this should be able to cruise for ~50+miles@60mph/50% dod with 18 T-875s while having ~800lbs of safe carrying capacity.
Oh, and check out
this EV calculator to check out how changing the alignment/rolling resistance/aero drag increases range.
P.S. But (there's always a but), even if the batteries last for 1000 cycles at 50% dod, based on current prices of ~$150/battery and electricity at 10c/kWh, the vehicle will still cost ~7+c/mile to run, the same as a car averaging ~50mpg with $3.50/gallon gas. If everything I've been hearing about LFPs is correct, and you drag them down to 50% capacity, it would cost ~4c/mile including electricity at 10c/kWh, so you would need something that averaged ~90mpg to see the same costs, not counting the extra work/money needed to maintain a normal car.
All your friends are doin' it 
