F721 Z Flip 4 SUB Battery

The Samsung GH82-29434A SUB battery is a service part for the Galaxy Z Flip 4 SM-F721B. The listing identifies it as battery EB-BF723ABY and describes it as a SUB battery assembly.

It is intended for the specified phone model as a replacement battery component. The service description is SVC BATT ASSY-SUB-EB-BF723ABY-30-F721, which identifies its SUB assembly role within the phone’s parts catalogue.