John Deere 620

bleazenb

New User
Have a 1958 620 that I'm trying to get moved from a barn. It has no battery installed. I know that original battery configuration was 2 6volt batteries connected in series to get 12 volts positive ground. Trying to get away the two battery system, what is everyone using for a single standard 12 volt battery. CCA rating? , group size? Thank you
 

Anything over 700 CCA should be OK.
Mine all have Group 31 w/ 1000 CCA, but mainly because I got them for free...
Group 31's are a little harder to use because the posts are in the center of the battery.
Group 27 or 27F should work (don't remember the CCA on those though...)
 

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