[AT] JD 620 / charging six-volt batteries

[Robert]

Positive grounded system.  Charge as single 12V battery. _Positive 
_cable from charger to  grounded battery _positive _terminal. _Negative 
_charger cable to the _negative _terminal on seriesed second battery 
(wire to starter).  I keep 12v trickle charger on seriesed 6 volt 
batteries for a trailer and it works fine.  One large 12v battery fits 
nicely in the seat box of my JDB and is easier to install with fewer wires.

Best wishes.

Bob Holtzer

On 11/20/2014 5:40 PM, Dean Vinson wrote:
> When charging either of the two six-volt batteries in my 620, do I need to
> worry about disconnecting them from each other?
>
> http://www.vinsonfarm.net/photos/620_batteries_20140703.jpg
>
> They're wired in series to provide 12 volts to the starter, so the (-)
> terminal of the grounded battery is directly connected to the (+) terminal
> of the other battery.   Hooking the (-) clamp from the charger onto the (-)
> post on the grounded battery (good) is therefore electrically the same as
> hooking it to the (+) post on the other battery (bad).  So I've been
> disconnecting that big jumper cable between the two batteries.
>
> But as I think about it, it shouldn't make any difference unless there's
> some path by which the charging current is being applied to the other
> terminal of the second battery also.  Correct?  No complete circuit to that
> battery, no effect of touching only one of the posts?
>
> Thanks--
>
> Dean Vinson
> Saint Paris, Ohio
>
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