Mixing AGM and wet cell batteries
After two weeks with the new charger, all seems well. The starter (wet) battery has more than enough charge (14.2V) to easily turn the engine over, while the house bank AGM batteries are kept charged at 13.5V.
The switch is placed in "2" (the starter battery only, the engine is started, we pull away from the dock and motor to the sailing ground. We put up the sails, shut down the engine, move the switch to "1" (house bank) and sail away. On return, we reverse the process. So far, so good. ;^)
~ Happy trails and sails to you ~ _/) ~