Offset pole socket and energy storage system comprising the same

A pole socket for a lead-acid energy storage system, wherein the pole socket has the following:

• a connecting element with a first end region and with a second end region situated at least substantially opposite the first end region;
• a connection element which is arranged on the first end region of the connecting element and which is configured to make electrical contact with electrical consumers;
• and
• a contacting element which is arranged on the second end region of the connecting element and which is configured to make electrical contact with a pole shaft,
• wherein the connection element extends in a first direction of extent proceeding from the connecting element, and wherein the contacting element extends in a second direction of extent proceeding from the connecting element, wherein the second direction of extent runs parallel and in the opposite direction with respect to the first direction of extent, such that the contacting element is arranged offset from the connection element,
• wherein the connection element has an upper region for making contact with the electrical consumers and a lower region which is configured to engage with a material of a housing, wherein at least one groove is arranged in the lower region, with the at least one groove terminating prior to the contacting element.