Anderson Ed wrote:

I intially had two 25 AH Concord RG-XC batteries, but when one developed
a shorted cell I replaced it with a similar Odysses battery that weighed
7 lbs lighter with only sightly less capacity.  When using two batteries
you should make provisions for isolating each from the bus should one
develop a problem such as a short.  I use a battery manager called
Battery Guardian II which will automatically monitor your aux battery
voltage and switch it into the charging circuit as needed.  It also has
a crow bar circuit and an abnormal voltage warning light.  You can also
manually bring it into the power circuit via a switch.

I use both batteries for starting the engine and then switch the aux to
the automatic mode.

Ed Anderson

 
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