Abstract: A terminal connector assembly provided for conducting electrical current from an electrolytic device through the wall of a case containing the device for preventing leakage of electrolyte from the case. The terminal connector includes a terminal insert mounted within the case wall. The insert contains a first end portion projecting through the wall forming an exterior connection member. A second end portion is laterally spaced from the first end portion and forms an interior connection member remote from the exterior connection member. A mechanism is provided for substantially reducing the transmittal of mechanical loads from the first end potion to the second end portion. A member is provided for electrically interconnecting the interior connection member with the electrolytic device within the case. Finally, a mechanism seals the connection between the electrically interconnecting member and the interior connection member to prevent leakage of electrolyte from the device.