i have bought two different sets of replacement bateries for my cartridges, one was the Eunicell Alkaline that replaces the LR626, G4, SR626W batteries. None of them worked (bought 20). So i thought i better get a brand name, and go the Maxell SR626W batteries. Put one in, does not work. If i exchange a battery from a different cartridge to the one who's battery is not working anymore, it works fine. And when i install the new batteries in the then battery free cartridge, the printert again does not recognize the battery. What the heck is going on? does not make sense to me. I is obviously not the chip that is faulty, cause it works fine if i use a battery from a different cartridge.