BLP791 Original-Capacity Replacement Battery (4015mAh)

The BLP791 is a high-efficiency, slim internal Lithium-ion Polymer replacement battery manufactured under the BBK Electronics supply umbrella for Oppo and Realme devices. Unlike bulkier budget cells, this battery is optimized for ultra-thin phone designs that balance light carrying weights with steady daily output. If your phone is heavily overheating during routine charging, constantly dropping percentages rapidly under a 20% limit, or rebooting unexpectedly, replacing the cell completely restores factory standby longevity.

• Battery Model: BLP791

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

• True Capacity: 4015 mAh (Typical) / 3920 mAh (Rated)

• Standard Voltage: 3.85V

• Charging Voltage Limit: 4.4V

• Fast Charge Support: Fully calibrated to handle Oppo’s VOOC and Realme’s Dart flash-charging standard outputs safely without triggering chemical or thermal throttling.

• Safety Layout: Programmed with a premium double-IC Protection Circuit Board (PCB) that filters destructive voltage surges, halts overnight overcharging cycles, and provides real-time heat dispersion tracking.

• Device Compatibility: This exact 4015mAh flat structural form factor and specialized flex clip layout precisely match:

  • Oppo F17 (4G)

  • Oppo Reno 4 (4G variant)

  • Oppo A73 (4G – 2020 Edition)

  • Realme 7 Pro