I have a boat, with starter battery and domestic bank. I plan to use a non isolated Orion 12 12-30 to charge the domestic bank. The starter battery can be charged in 3 ways: alternator, solar or shore power. Is there any reason why the Orion should not be left on ALL the time so that if the starter battery voltage is high enough it passed power though to the domestic bank? Clearly the cut off needs to be set high enough that the started battery does not discharge. And finally if that condition is not met what is the Orion consuming? Is this the 1mA standby current in the data sheet? Thanks.