Our rig has the electric locks, if you turn off or disconnect the batteries you can't unlock anything! Made the mistake when changing batteries and let the battery bay door latch. Only way I could open it was to use the only key I happened to have that unlocked the bays. (Have since made spares) Couldn't even let the power cord out since the power cord retract wouldn't work with no power. If I have to do it again I'll make sure shore power is connected and wedge doors open!
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '05 Odyssey