Xiaomi Dreame V11 25.2V Replacement Battery 2500mAh

Xiaomi Dreame V11 / V12 Series — 25.2V Li-ion Replacement Battery (20-2017-023-00-000)

This is a 25.2V Li-ion battery pack rated at 2500mAh (63Wh), replacing part number 20-2017-023-00-000 and P2016-751P-BWA. It fits the Dreame V11, Dreame V11SE, and Dreame V12 cordless stick vacuums. If the original battery holds less charge than it used to, shuts down mid-clean, or no longer holds a charge at all, this is the correct replacement cell.

• V11, V11SE, and V12 platform: These three models share the same 25.2V battery bay, connector pinout, and BMS handshake protocol. The V11SE uses identical hardware to the V11 with minor cosmetic differences — the battery is interchangeable across all three without modification.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge runs on the V11 platform. The BMS communicated correctly with the vacuum's power management circuit, and overcurrent protection tripped cleanly under a simulated blockage load — no false shutdowns during normal suction cycles.
• Dock charging habit on the Dreame V11: Do not leave the vacuum sitting on the charging dock permanently. The Dreame V11 does not cut trickle charge once full the way a phone does. Continuous dock connection accelerates capacity fade. Charge to full, then remove from the dock until the next use.

Suction dropping before the battery indicator reaches low on the V11

On the Dreame V11, suction can noticeably drop while the battery indicator still shows two or three bars. This happens because a partially blocked filter forces the motor to draw higher current than rated, which causes voltage to sag across the cell even when charge capacity looks fine. The BMS reads that sag as a near-empty condition and begins throttling motor power to protect the cell. Clean or replace the HEPA filter first — if suction returns to normal after that, the battery was not the root cause.

Motor cuts out mid-clean then restarts after a few seconds

This is a BMS overcurrent trip, not a dead battery. When the vacuum encounters a sustained restriction — a jammed brush roll, a blocked inlet, or a saturated filter — current draw spikes past the BMS protection threshold and the circuit cuts power. The BMS resets automatically after a short cooldown, which is why the vacuum restarts on its own. Clear the restriction, check the brush roll for hair wrap, and verify the filter is not clogged. If the trip happens again on an unrestricted surface, check that the replacement cell's BMS trip rating matches the original — the OEM threshold on this platform is approximately 15A continuous.