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Old 03-13-2008, 12:59 PM   #574 (permalink)
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jwxr7's Avatar
Join Date: Dec 2007
Location: mid michigan
Posts: 136

the metro experience (retired) - '94 geo metro 4 dr HB
90 day: 66.44 mpg (US)
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Hey Darin, I saw you mention a desulfator earlier in this thread. Did you ever try anything like that for your batteries?
I found a homebrew circuit for a desulfator a while back. Here is a site that shows some details
and here

I've built 3 so far (2 for at home and 1 for at work) with good success. We use lots of lead acid batteries at work so we use a store bought desulfator to maintain them sometimes. We wanted more but without the $50 price tag. That's one reason I looked into DIY versions.
I recently brought a 2.7ah 12v SLA back from the dead with the homebrewed circuit in just over a week. The store bought one we use did the same thing with one a month earlier, but took a little longer.

I modified the circuit so I can use a wallwort as a trickle charger if needed. I believe the 12v circuit can do 6v batteries since the timer IC needs only 5v to run. There is a 24 volt version too. There are also ways to make them higher power for really large batteries.

Heres a good forum about them too.

Best tank= 81.23 mpg on 07-01-2008
Longest range= 791 miles on 9.74 gallons

Last edited by jwxr7; 03-13-2008 at 01:10 PM..
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