Symphony Z28 Original-Capacity Replacement Battery (4000mAh)

The Symphony Z28 replacement battery is an internal, high-density Lithium-Polymer power cell built explicitly for this popular local budget phone. Because this model relies on a large display, a degraded or weak factory cell directly leads to fast charge draining, freezing under heavy apps, or stalling on the Symphony boot screen. A true-capacity replacement restores the phone back to its factory-standard runtime.

• Battery Model: Symphony Z28 (Cross-compatible with the Symphony Z30 battery layout)

• Battery Type: Lithium-ion Polymer (Li-Po)

• True Capacity: 4000 mAh

• Standard Voltage: 3.85V

• Charging Voltage Limit: 4.4V

• Safety Integration: Fitted with a reliable Protection Circuit Module (PCM) to shield the phone framework against power spikes, overcharging at night, and overheating.

• Device Compatibility:

  • Symphony Z28

  • Symphony Z30