along the lines of an inverter charger

jayw900 wrote:
I was sitting here thinking, cause that's what i do, and have tried to do a search however it seems i'm not asking the right question.

Is there something that does the opposite of an inverter-charger? Instead of prioritizing shore power to battery, i'm looking for something that will choose battery over shore until the battery voltage goes below a user chosen set point.

For example, always running on battery(solar) until 12.0-12.1 volts when it switches over to shore power while batteries charge up to float(~13.2) then changes back to battery. All i need is a name or phrase and i can do the rest. The search i've done so far have only brought up "normal" inverter-chargers.

Get a Magnum Inverter, they were originally designed for residential alternative energy systems.

The inverter can be programmed to use DC as the primary power source until other conditions are met, then it will connect to grid or start a generator if so connected.

1> Battery voltage low set-point
2> Battery state of charge set-point (requires battery monitor kit), more accurate than voltage
3> Time of day / quiet hours window
4> Manual control, inverter will just shut down rather than connect to grid power / generator