Hello Boaters.

Anybody got this set up? An aux battery is charged by the boat's
engine, but is isolated so that it will only be used in emergency or
by another circuit like for an 800 watt invertor? And while the boat
is sitting for two months, solar energy is maintaining both batteries?

Sounds nice huh? Possible?

Anybody got a working and proven solution and would be so kind as to
share products/vendors and a high level design ?

Many thanks again - you guys are great!