As a replacement battery is only partially useful! The contacts on the battery are made of a metal foil and are not suitable for built-in unit cable connector. I resoldered connections but this of course will invalidate the warranty. Furthermore, the Ackupack in width and height is about 1mm larger than the original and therefore can not be the screwdriver to assemble without machining of fits. A new device is completely to have the net with case and accessories for 35 and therefore the better choice!
