Monitor Panel markings

On the holding tank monitor panel on our 2018 North Trail 24 BHS, the panel in the bathroom has the following markings for the Battery status: L, F, G, and C. What do they stand for?

Thanks.
Frank 2018 NT 24 BHS

How about: Low, Fair, Good, Charged.

If you get down to 2 lights: Fair, you probably have a problem and will soon be at 1 light: Low. After that, it won't be long until you're at 0 lights and your battery is discharged.

When plugged into shore power, the lights indicate the output of the Power Converter AND battery. If everything is working correctly, on shore power, you'll always have 4 lights: Charged.

Thanks, Dan. That all makes sense.

Frank