(slang) variation of back to battery, which is an artillery term. A gun, after it fires, is said to go out of battery, which is to say, it recoils. Then after it is fired it is supposed to go back to battery, which is sitting the way you see them in photographs. It is used as a slang term to indicate somebody or something that is now fixed up; will be all right for something, or what it has had wrong will now be over. —Class VIII №1, Approved November 1990