On 1-2-2013 15:42, wrote:

Dan,

The circuit you presented already is a parallel circuit in regards the batteries. Looking at it, I'm assuming the diodes are there to prevent damage to the batteries& the controller if one of them is hooked up reverse. In that case, I'd use two diodes.

Regards,

Chris C.

I didn't look at the circuit, but diodes are usually installed in series
between the panel and the battery to keep them from discharging through
the panel at night when it's dark and they aren't charging.

Scott