Re: John Deere 4000 - two 6voltsor two 12 volt batterys
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Posted by Steamer on October 09, 1998 at 11:02:08:
In Reply to: John Deere 4000 - two 6voltsor two 12 volt batterys posted by G.Rainey on October 09, 1998 at 00:19:49:
: My J.D. 4000 is a little hard starting when temp. drops down .I currently have it set up with two 6 volts in series to make 12 volts,would two 12 volt batteries hooked in parellel start this tractor better. thanks gr. The series wiring of two six volt batteries is preferable to the parallel wiring of two twelve volt batteries. This has to do with the physical plate constructon inside of the batteries. The six volt batteries have more rugged plate construction for a given capacity (amp-hours) than a twelve volt battery with the same capacity. Also, the parallel wired batteries will age faster during the charging cycle since one battery tends to lose capacity faster than the other, preventing the better battery from completley charging (needing to 'share' the charge). Then that has the effect of causing the 'good' battery to age faster than the 'bad' battery. The end result is that after a couple of years the batteries are likely to require replacement. The series wired six volt batteries are likely to last significantly longer as they will be both be delivered all of the charge all of the time, rather than having to 'divide' it between them. I've experienced more problems with diesel engines with parallel batteries than I have with series batteries. I think the other posts are all correct in that you need to clean up all your connections first. It's less work than rewiring the mess, anyway.
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