Outlet covers

OK - I have managed to tear off one of the battery expansion outlet covers on my AC500. Is there a way to procure a new one?

Are you referring to the rubber dust cover flap that covers the opening on the side where you plug the battery cables in?
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Did you actually tear it or simply pull it out of the small slot that holds it? It’s kind of a press fit pushed into a small slot. I find they get in the way and have been tempted to remove them, but that’s me. I can only guess you want them as dust covers while storing your AC500 away in a closet or something, otherwise it just gets in the way when you’re trying to plug in a battery cable.