Originally Posted by Ka_sea_ta
I assume that your thruster and windlass is 12 volts, if your house bank is the same chemistry(AGM) then why not use an ACR.... It appears the thruster bank has not been charged in awhile, so probably the fuse may have failed awhile ago check the holder and wiring.... A second thought would be to put the other duo charge in parallel with the original.... If it were me I would want the higher charge current available with an ACR to supplement the available power from the batteries with alternator when using the thrusters or windlass.
Yeah, I am leaning towards the ACR for the reasons you mention.