Abstract: A battery receptacle particularly adapted for a cuboid 9V battery has a first (end) wall which is made concave by mutually inclined surfaces provided by shape determining sections. The end of the battery is urged into engagement with the inside concave surface of the first wall by a biased electrical contact at the opposite end of the receptacle. The biased contact provides a first arresting device which is supplemented by a second arresting device provided by a torsion spring which is disposed to urge the battery laterally or vertically against a lid or side of the receptacle when the receptacle is closed. The concave inside of the end wall and the arresting means cooperate to prevent the battery rattling in the receptacle. This is a particular benefit when the receptacle is part of a portable device which includes or is a microphone.