Between putting in engines thats pretty much what I did lol
My DC-DC charger is bluetooth and I can change the voltage at which it shuts off and turns back on deending on the voltage it receives from the start battery.
I have found it draws a ton of power and lowers the voltage in teh start battery FAST.
, I set the turn off voltage at 12 and back on at 13v . That way it pretty much doest charge unless I`m plugged into shore power or the engine is running .
I put the charger on a switch so that it can just be turned off , lets say after draining the lithium battery I don`t want the alternator to over heat as mentioned.

also installed the Eddie Young recommended Weldon 2025 fuel pump. Does not come with any mounts so keep that in mind .
Got rid of the A1000`s .

Dan,

That looks very much like the one I’ve got. Mine is fairly loud. LMK what yours sound like when you get them up and running. I’m pretty well set on replacing it this winter, but I might try and rubber mounting it first.

Thanks. Brad.

Will do ... can`t be any louder than the A1000`s , they were loud but can`t hear em over the engines once started .