US 59627708 A description fig1 shows a cross sectional view of an accumulator 10 which comprises electrochemical cells 12 1 to 12 6 of which the electrochemical cells 12 1 12 2 and 12 3 are shown in fig1 the electrochemical cells 12 1 12 2 12 3 each comprise a multiplicity of pole plates 14 1 14 2 and 14 3 respectively which are separated from one another and form a positive plate set and negative pole plates 16 1 16 2 and 16 3 respectively which form a negative plate set the electrochemical cells 12 1 to 12 3 are physically separated and electrically isolated from one another by partition walls 18 1 18 2 and are arranged in a housing 19 in the following text a reference symbol with a numerical suffix u201c 1 u201d u201c 2 u201d denotes the respective specific object reference symbols without a numerical suffix denote the object in general the positive pole plates and the negative pole plates are each separately mechanically and electrically connected to a connector 20 1 20 2 20 3 and 20 4 two respective connectors 20 1 and 20 2 as well as 20 3 and 20 4 are electrically and mechanically connected to one another through an opening which is not shown in the respective partition wall 18 1 or 18 2 as a result of which the electrochemical cells 12 1 to 12 3 are connected in series contact is made with the accumulator via a positive pole 24 and a negative pole 26 fig2 as shown.