About this replacement
Oppo Reno 10 Pro / CPH2541 — 7.82V Li-Polymer Replacement Battery (BLP997)
This is a 7.82V, 2200mAh Li-Polymer replacement battery carrying OEM part number BLP997. It fits the Oppo CPH2541, CPH2525, Reno 10 Pro, and Reno 10 Pro 5G. Swap it when the original cell can no longer hold voltage under modem or display load.
- CPH2541 / CPH2525 platform compatibility: Both handsets run the same 7.82V dual-cell Li-Polymer configuration with an identical BMS connector pinout and charge IC handshake — one BLP997 cell serves the full Reno 10 Pro line without modification.
- Bench tested on actual hardware: We cycled this cell through charge, full discharge, and charge again on Reno 10 Pro hardware. The BMS accepted the charge IC handshake cleanly, thermal cutoff thresholds triggered correctly, and the coulomb counter began tracking from the first full cycle.
- Fuel gauge recalibration on first use: Disable SUPERVOOC or any fast-charge mode for the first complete discharge-charge cycle after installation. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes current into an uncalibrated coulomb counter.
Sudden shutdown at 20–30% on a replacement BLP997 cell
A new cell has a different internal resistance profile than the degraded cell the fuel gauge IC was calibrated against. Under high-draw conditions — 5G modem switching, sustained display brightness — the cell voltage drops faster than the IC predicts, hitting the hardware cutoff threshold while the OS still reads 20–30%. The fix is one full uninterrupted discharge-to-shutdown followed by a full charge with fast charging off. After that cycle, the coulomb counter realigns to the actual voltage curve of the new cell.
SUPERVOOC fast charge not accepted after battery replacement
Oppo's SUPERVOOC protocol requires a BMS authentication handshake before the charge IC ramps current above standard 5V input. On the first cycle after a cell swap, the BMS may respond slowly or return an unrecognised flag, causing the charger to fall back to standard 5W charging. Plug in using the original Oppo SUPERVOOC adapter — not a third-party cable — and leave the phone stationary through the first full charge. Once the BMS completes its initialisation sequence, fast charging resumes at the correct voltage step, typically 10V.