hi all .i just put in the perko battery switch it has the 1 2 and all options .i have it hooked up for #1 BATT to work just the motor.#2 BATT is to work all my extras.does the all position charge both batt at the same time.here is my qustion lets say i go to the pond at night.at the dock i have 2 fully charged batt. my switch is in the all postion. i start the motor put on my lights radio and away i go. i stop shut off motor.i plan sitting here for a good long time with my lights on radio on fish finder.so i switch to #2 batt on the perko switch .i start to see the lights are getting dim.at this point i no my batt is low. so i want to charge it up. put switch back to #1 batt .start motor now mind you all my lights are hooked up to #2 batt so no lights .the switch is the make before break.what do i do go to the all postion with motor running . and what happends if i go to #2 the batt is low at this time.i have been told over and over to make sure batt is full to run the old 60 hp johnson because it needs the full batt to make sure no damage to ignition.it seems at this point if i did go to #2 it would cause damage.i think you all see were i am goig with all this. any feedback