[RE-wrenches] Strings and series of batteries

[Windsun@wind-sun.com]

Yes, especially with flooded batteries where the posts are much more subject to corrosion. I am getting too old and decrepit to get out in the field much anymore, but in the past I have seen complete strings basically isolated by bad cross connections, usually (but not always) due to corrosion at the terminals. In extreme instances I have seen cross connect cables totally gone at the cable/lug connection point - nothing but green powder. 

With multiple batteries and banks, correct cabling and connections become much more important, because they may not show up until too late. With a single series string it is usually obvious if something goes bad, but with multiples not so much. Sometimes you have no choice but to use large strings, but I have seen installations where 60+ 42 amp-hour batteries were strung together, because they were "cheap".

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Northern Arizona Wind & Sun - Electricity From The Sun Since 1979
Solar Discussion Forum: http://www.wind-sun.com/ForumVB/
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  ----- Original Message ----- 
  From: Dana 
  To: 'RE-wrenches' 
  Sent: Tuesday, December 01, 2009 10:57 AM
  Subject: [RE-wrenches] Strings and series of batteries


  On a similar subject here -

   

  Long ago, I had a Trojan battery rep. state that they did not like to see more than [12] L-16s in a series -parallel bank system. This was due to too many points of connection  /  resistance and bad communication due to multiple flow paths.

   

  Has anyone else heard similar or contrary information/recommendations?

   

  Thanks

   
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