Tradewinds 2001 model 7390

My MH has been sitting for about 7 months and today I fired her up with no problems. I have a question on the Freedom Remote Control Panel. As long as I'm plugged into shore power it is lit up showing battery state, DV Volts, DC Amps and incoming AC Breaker Amps, but when I shut down the shore power it shows nothing. Is this the way it is supposed to be? Sorry but it's been awhile since I've used her.