Rechargeable battery features and components

A battery comprising:

• a housing characterized by a first end and a second end opposite the first end, wherein the housing comprises a circumferential indentation proximate the first end, wherein the housing defines a first interior region between the first end and the circumferential indentation, and wherein the housing defines a second interior region between the circumferential indentation and the second end;
• a cap at least partially contained within the first interior region of the housing, wherein the cap is characterized by a first surface facing into the housing and a second surface facing out from the housing;
• a set of electrodes located within the housing, wherein the set of electrodes is positioned within the second interior region of the housing, wherein the set of electrodes includes a first electrode and a second electrode, the second electrode comprising a tab that comprises chamfered corners and is at least partially covered by an insulative material extending about the tab, wherein the tab is coupled with the first surface of the cap such that the chamfered corners recess an exterior edge of the tab within a diameter of the cap on the first surface, and wherein a window is formed through the insulative material exposing a portion of the tab facing the cap.