OnePlus ACE Pro BLP945 Replacement Battery 7.74V 2350mAh

OnePlus ACE Pro — 7.74V Li-Polymer Replacement Battery (BLP945)

The BLP945 is a 7.74V, 2350mAh Li-Polymer cell built to replace the original battery in the OnePlus ACE Pro, ACE Pro 5G, PGP110, and OnePlus 10T 5G. It fits the dual-cell battery tray and connects to the same BMS harness as the factory unit. Capacity is 18.19Wh — matched to what the phone's charge IC expects.

• ACE Pro and 10T 5G platform fit: Both the ACE Pro and 10T 5G share the PGP110 board revision, which uses the same BLP945 connector pinout, cell voltage rails, and BMS handshake protocol — so one battery covers all listed variants without any wiring changes.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge passes on the ACE Pro, confirming the BMS accepted the cell, protection thresholds triggered correctly at the low-voltage cutoff, and the charge IC stepped through trickle, CC, and CV phases without fault flags.
• Fuel gauge recalibration on first use: Disable SUPERVOOC fast charging for your first complete discharge-to-charge cycle after installation. This lets the coulomb counter and fuel gauge IC map the new cell's discharge curve before high-current fast charging pushes current into an uncalibrated state.

Sudden shutdown at 20–30% on the ACE Pro after a cell swap

This happens because the fuel gauge IC is still running the discharge curve from the old, degraded cell. The new cell has a steeper voltage cliff at the low end, and the IC underestimates how close it is to cutoff. Under a heavy load — 5G modem handoff or display at full brightness — the cell voltage drops briefly below the BMS cutoff threshold and the phone shuts down. Run one full uninterrupted discharge from 100% to auto-off, then charge to 100% without interruption. After that cycle, the coulomb counter realigns to the new curve and the shutdowns stop.

SUPERVOOC fast charge refused on the first cycle after replacement

On first power-up with a new BLP945, the charge IC sometimes falls back to standard 5W USB charging instead of enabling SUPERVOOC. This is a BMS authentication step — the charge controller on a fresh cell needs to complete one slow-charge handshake before the proprietary fast-charge protocol is unlocked. Let the phone charge fully at whatever rate it accepts on that first cycle. SUPERVOOC will re-engage on the second charge once the BMS has logged the first full cycle event.