NOVELTY - The module (100) has a first cell holder (103-1) for fixing a pole side of energy storage cells (101) i.e. battery cells. A contact part (105-1) comprises contact portions (107-1) that are electrically contacted with poles (102-1) of the energy storage cells. A second cell holder (103-2) fixes antipole side of the power storage cells. Releasable latching parts (109, 111) are utilized for mechanically connecting the first cell holder to the second cell holder and extended between the adjacent energy storage cells. The pressing contact portions are formed on poles of the energy storage cells.    USE - Electrical energy store module for a rechargeable battery pack. Uses include but are not limited to provide electrical power in a garden tool, a drill, a cordless screwdriver, a toy, an emergency system, a medical device and electric vehicle such as e-bikes, pedelec or e-light vehicles.    ADVANTAGE - The module can exchange the energy store cells and contact the energy store cells in a simple and a reliable manner. The module has high quality and reduces retention times as a failure of the module can be precluded due to human failure in form of forgotten welding points or a process inaccuracy or wear of welding electrodes. The module can be unlocked in a quick and simple manner. The module ensures that contact parts are made of punched sheet metal parts, so that the contact parts can be manufactured with reduced effort. The contact parts are made from a cupro-nickel silicon alloy, so that the module achieves high electrical and thermal conductivity with high hardness and strength and better corrosion. The module reduces production times.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a tool for unlocking an electrical energy store module.    DESCRIPTION OF DRAWING(S) - The drawing shows an exploded perspective view of an electrical energy store module.    Electrical energy store module (100)    Energy storage cells (101)    Poles (102-1)    Cell holders (103-1, 103-2)    Contact part (105-1)    Contact portions (107-1)    Releasable latching parts (109, 111)