RE: (ET) Evaluate used batteries from golf course

["Joseph Rock" <jerock solidtech net>]

Bob,
  Ummm... What's EDTA and where do you even buy it?  Maybe I can breath
some more life into the set of batteries that I replaced about a year
ago.
--joe

        -----Original Message----- 
        From: Klein Robert W NPRI 
        Sent: Mon 1/31/2005 8:26 AM 
        To: 'Markus Lorch'; elec-trak cosmos phy tufts edu 
        Cc: 
        Subject: RE: (ET) Evaluate used batteries from golf course
        
        

        Mark,
        
        I've had a lot of luck in revitalizing old batteries with EDTA.
A tablespoon per cell will help remove the lead sulfate from the plates.
I brought two golf cart batteries back from the dead this way.  They had
been run completely down, frozen, drained, exposed to air, neglected,
etc.  I added good water with EDTA added, ran them through some heavy
charging cycles and they worked amazingly well right up until a year
later when I was experimenting with on off-gassing charge and blew the
case apart, (but that's another story).  Note:  I used these batteries
to cut my one acre lawn all suimmer as well as snow plowing in the
winter.
        
        Good luck... Sounds like a great deal.
        
        Bob K
        
        -----Original Message-----
        From: Markus Lorch [ mailto:mlorch vt edu]
        Sent: Monday, January 31, 2005 10:16 AM
        To: elec-trak cosmos phy tufts edu
        Subject: (ET) Evaluate used batteries from golf course
        
        
        Hi guys,
        
        I am going to follow the advice of many list members and will
        try to get some used 6V Golf Cart batts from a golf cart dealer.
I hope I'll get them next to nothing and I told them that I'd want to
come to their store, look at the old ones and pick some.
        
        Now my question:
        What to look for when I have to pick the best 6 that they have.
        
        I'll probably only have time for a quick look and can't charge
the batteries before I pick them.
        
        Here're my thoughts:
        
        - measure their resting voltage
        - put a reasonable load on them (not sure yet what, some sort of
          resistor in the area of 0.2 Ohm (30A)) and see if the
          voltage remains relatively stable for a few minutes.
        - avoid "empty" batteries (look for more than 5.5V)
          and "dry" batteries
        
        Thanks for any hints
        
        Markus
        
        
        
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