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Old 06-29-11, 11:07 AM   #12
MetroMPG
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Join Date: Aug 2008
Location: 1000 Islands region, Ontario, Canada
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I need a lawn-mowing room-mate!!

I talked to my alarm company technician friend last night and it sounds like I can have as many used 12v 7Ah batteries as I can take, probably gratis. He says they replace many each week. Some are actually worn out, but others are still good (e.g. replaced when one battery in a parallel string setup croaks before the others, but they replace the whole string).

I'm meeting him at their shop this afternoon, where he says they have a milk crate full.

Then I'll just need to set up a testing rig to figure out which ones still have life in them & measure their capacity.
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