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Connecting batteries in parallel - some questions: - Page 2

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Posted by Josepi on December 29, 2009, 3:39 am
 


Some tricks are to keep the lead lengths the same to a common star point,
same size conductors, and generally make the charging/discahrging currents
split equally.


I found this site that recommends NOT to use parallel batteries:

http://www.rpc.com.au/products/batteries/deepcycle_faq.html


I am thinking I'll get the same Energizer deep cycle and place
them in parallel, as they will all be same and new, and I can
just lift them without too much trouble.  The 6V batteries were
too heavy for this old geezer and had no handles on them.  Am
awaiting the second panel.

Thanks for all the suggestions.

Jim







Posted by Daniel who wants to know on January 1, 2010, 10:37 pm
 



Correct. Always use a star point connection or a "cross connection" (not
sure of the proper terms).  Never a straight connection.

See:
Cross:
http://www.class-c-motorhome-info-made-simple.com/images/Batteries_In_Parallel.jpg
Straight:
http://i.ehow.com/images/GlobalPhoto/Articles/4448303/parallel-battery2_Full.jpg  



Posted by ghio on January 2, 2010, 12:00 am
 


Both links show the second best option, parallel batteries should be
avoided where ever possible. Use batteries of the correct Ah rating
rather than parallel batteries. Six- 2volt, 600Ah batteries in series
is preferred over six 12volt, 100Ah batteries in parallel.

Posted by Josepi on January 2, 2010, 1:00 am
 

Most would call that a "daisy chain" connection. Straight is not
descriptive.


Correct. Always use a star point connection or a "cross connection" (not
sure of the proper terms).  Never a straight connection.

See:
Cross:
http://www.class-c-motorhome-info-made-simple.com/images/Batteries_In_Parallel.jpg
Straight:
http://i.ehow.com/images/GlobalPhoto/Articles/4448303/parallel-battery2_Full.jpg




Posted by sno on January 2, 2010, 4:16 am
 

I have often wondered when connecting batteries in parallel, if sharing
of the electrolyte between batteries (a tube between batteries...??)
would solve the unequal voltage problem.

Any thoughts on this would be appreciated...

thank you for listening to my thoughts.....sno

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