"sonofadocker" wrote in message
oups.com...
can anyone tell ma how to use to batteries for my boat.
i would like one to run the motor only.
one to run all the radios,lights etc.

thanks

sonofadocker

1980 wellcraft cc 85hp
1975 sportcraft cuddy 150hp


To do the job right, will take 2 switches and a battery combiner. A Guest
(or Perko) dual battery switch and a separate switch to shut off power from
the accessory battery. The dual bat switch allows you to switch to the 2nd
battery for starting if the starting battery dies. Run the starting battery
in position 1 and use the combiner / isolator for connecting the 2 batteries
together when charging and you will need a 2nd on/off switch to disconnect
the 2nd battery from the electronics, etc when parking the boat.