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Old 07-29-2008, 03:04 PM   #178 (permalink)
MPaulHolmes
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Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
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Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
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Bought a few things

I was doing some reading about Absorbed Glass Mat batteries, and was very impressed. The Sears A.G.M. batteries have a Peukert (vomit) value of 1.09, which is very low. Their internal resistance is VERY small, so there is basically no limit on discharge and recharge rates. They can put out like 2000 amps for 7 seconds. Maintenance free. No liquid to add. Leak proof too. Also, they don't vent Hydrogen (or at least VERY little). They are also immune to freezing damage. They can be recharged in like 20-30 minutes too, if there was such a charger!

After going over the GVW of the car and the weight of various setups using 12 batteries, and after determining that the range would be about 13 or 14 miles at in-town speeds to 50% DoD, with only 6 of the biggest AGM batteries (and they could handle the high discharge rates without a buddy!), we decided to buy 6 of them yesterday. They are 75 pounds each, and our Kia Spectra looks like a low rider.

Also bought a proper throttle, since I don't need it to be 3 wire anymore. Got an extra fuse, and 12 lugs, since the homemade lugs out of copper pipe are maybe OK, but those dang batteries are expensive, and I don't want to screw up any thing.
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Last edited by MPaulHolmes; 07-29-2008 at 07:20 PM..
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