Just bought a boat. When my boat is on shore power (or gen set, for that
matter), is it OK to let the battery charger run continuously, charging the
batteries? For a few days? Few weeks? I have two engines, and two
batteries on each (two battery switches). Only the starboard engine battery
set seems to be connected with the boat 12v system. To avoid running down
the batteries with cabin lights, electric toilet, fans, stereo, and other
items that only run off 12v, is it OK to leave the battery charger charging
the batteries, or could I also overload the charger doing this? I believe
my batteries are deep-cycle marine type, but not sure at the moment, and I
also don't know what the charger capacity is.

Thanks,
Steve H.