Oppo A96 BLP885 Compatible Battery 3.87V 4850mAh

Oppo A96 / CPH2333 — 3.87V Li-Polymer Replacement Battery (BLP885)

The BLP885 is a 3.87V, 4850mAh lithium-polymer cell that fits the Oppo A96 (CPH2333) smartphone. It slots into the internal battery bay and restores full power to calls, apps, and multimedia functions. Capacity figure matches the product specification at 18.77Wh.

• A96 and CPH2333 fitment: Both are the same hardware revision sold under different regional SKUs. They share an identical battery bay, connector pinout, and BMS handshake protocol — one cell covers both variants without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on CPH2333 hardware. The BMS accepted the handshake on the first connection, charge current ramped correctly through CC and CV phases, and the protection circuit tripped at the expected low-voltage cutoff.
• Fuel gauge recalibration on first cycle: After installation, disable fast charging and run one full discharge down to automatic shutdown, then charge to 100% on standard 5V input. This gives the fuel gauge IC a clean reference cycle against the new cell's discharge curve before high-current fast charging is introduced.

Sudden shutdown at 20–30% on the Oppo A96 after a cell swap

This is a voltage-cliff failure, not a capacity problem. When the modem transmits or the screen runs at full brightness, current draw spikes sharply. A new cell that hasn't been calibrated causes the fuel gauge IC to misread state-of-charge, and the phone cuts power to protect the cell before it's actually empty. One full discharge-charge cycle on standard current — not VOOC — lets the coulomb counter build an accurate map of the new cell's voltage-versus-capacity curve. After that cycle, shutdowns at 20–30% stop.

VOOC fast charge not accepted on the first cycle after replacement

Oppo's VOOC protocol requires the charge IC and BMS to negotiate before elevated current is allowed. On a freshly installed cell, the BMS may reject that handshake on the first cycle because its internal state registers are not yet populated with valid charge history. Plug the phone into a standard 5V/2A charger — not the VOOC adapter — and complete a full charge to 100%. On the next charge session, connect the VOOC adapter and the handshake will complete normally, restoring fast charge.