A low profile battery tester uses tapered apertures to located batteries in a thin tablet shaped body for testing. In one embodiment for conventional dry cells, the taper is in openings through the body, and in another embodiment for button cells the aperture does not extend through the body and the...http://www.google.ca/patents/US5376887?utm_source=gb-gplus-sharePatent US5376887 - Battery tester with apertures for plural types and sizes of cells
