Here is the latest update with changes made this spring.
I have the same refrigeration
units, drawing 13 amps at 120V (this is the draw assuming they are on 100% of the time which they are not). Plus two 120v chargers that are charging
each thruster bank each drawing 5 amps at 120v.
I have also reduced the temp on the freezer
to 20 degrees which also makes a difference on draw.
I now have the two sterling regulator/chargers from each engine
charging my house batteries which are 5 lifeline 8D AGM
batteries, 255 ah each for a total of 1275 ah bank.
I have changed my inverter/charger to a Mastervolt 4000 watt and had shunts installed and two masterview screens.
I was running on inverter
all day on Thursday, temperature 71 degrees, with 5 hours at dock
, engines not running, and 4 hours running at only 1200 rpm
After 9 hours on inverter, my batteries still had 67% charge. Yeah!, finally, problem solved
Thanks for the help and suggestions.