My slides will work off shore power also, BUT, if you need some initial "torque" to get them open...I'd let the battery charge and see what happens then....If your microwave and all 120 is working...you should be ok in that department...Question: With shore power on, can you turn on 12 volt lights and they work? If so, your inverter is still sending 12 VDC to the 12 volt circuits....Did you try to turn on a 12V light without being hooked into shore power...just to see if it comes on at all, even dimly...a multimeter/voltmeter could tell you how much power is being generated at this time from your battery, (not hooked into shore power)....