Abstract: A tool for removing a battery cap having a sidewall and finger grip tabs, comprises a handle affixed to a socket comprising a plurality of recesses extending from the floor of the socket toward the opening of the socket. A plurality of pinch projections extending from a floor of the socket partway toward an opening of the socket form second sets of recesses respectively underlying first sets of recesses, the first and second sets of recesses having different shapes or dimensions or both. A plurality of different designs and configurations of cap can thereby be lodged and rotationally fixed within the socket to remove the cap from and replace the cap, for example on a battery cell.