For SONY D-Z555 D-555,D-150,D-250,D-99/90, D-88/82, D-303,D-515 DCP-150,DCP-100 ,aiwa XP6,XP7 AZ6819,AZ6829,AZ6808CD-10. Remove the old battery, carefully install the new battery on the battery box, tighten the screws, and then connect the wires of the new battery.