Run Solar Circuit and Shore Power at the same time?

Kayteg1 wrote:
My converter takes 50W doing nothing and overcharges the batteries at 14.2V, so when I plug in power, I disconnect the batteries unless they need charging.
If you have good solar controller, it will extend battery life instead of shortening it like most converters do.

If your charging circuit is a 3 stage charger, then this voltage is correct. My Xantrex goes to 14.5 for a while when I first plug in. It's called boost or bulk mode. The Grape solar controller will do this as well.