Abstract: A battery pack supplies an electrically driven treatment apparatus with an electric driving power and includes: a plurality of accumulator cells, wherein the accumulator cells have cell contacts; at least one circuit board, wherein the at least one circuit board is electrically connected to the cell contacts; and a battery pack housing, wherein the battery pack housing has a first battery pack housing part and a second battery pack housing part, wherein the first battery pack housing part and the second battery pack housing part are closed by each other. The accumulator cells are disposed within the battery pack housing.

Abstract: A battery pack supplies an electrically driven treatment apparatus with an electric driving power. The battery pack includes: a plurality of pouch cells, wherein the pouch cells have cell tabs and are configured and disposed in a stack such that the cell tabs are disposed on a common tab side of the stack in two tab columns, wherein averted end limits of the tab columns define an intermediate zone, and a circuit board. The circuit board is disposed within the intermediate zone and is electrically connected to the cell tabs.

Abstract: A battery pack supplies an electrically driven treatment apparatus with an electric driving power. The battery pack includes: a stack housing, wherein the stack housing has a common housing opening defined by a housing edge, and a plurality of pouch cells, wherein the pouch cells have cell tabs and are configured and disposed in a stack within the stack housing such that the cell tabs at least with tab parts on the common housing opening project beyond at least one edge portion of the housing edge. The tab parts are directly electrically connected to each other by welded connections.