Patent ID: 7547329

Claim:
An apparatus for marking a battery as charged or uncharged, comprising a manually changeable label attached to a battery in a pocket region defined about a battery positive contact button, wherein the label may be changed by a user to indicate either charged or uncharged battery status, and wherein the changeable label comprises a top modified insulating disc disposed above a bottom indicator, at least one of the top modified insulating disc and bottom indicator being non-conductive, the bottom indicator further comprises first and second visual markings and all engaging element, the indicator rotatably disposed about the positive contact button: the top modified insulating disc further comprises an engaging aperture aligned above the engaging element and an indicator aperture aligned relative to the first and second visual markings, wherein the bottom indicator may be rotated about the contact button into a first position, aligning the first visual marking under the indicator aperture and a second position aligning the second visual marking under the indicator aperture.