Dreame G9 Replacement Battery 25.2V 2400mAh Li-ion

Dreame G9 / G10 / P2010 Series — 25.2V Li-ion Replacement Battery (3027689)

This is a 25.2V Li-ion battery rated at 2400mAh (60.48Wh), built to fit the Dreame G9, G10, P2010, and P2045 cordless stick vacuums. It replaces OEM part numbers 3027689, BHR4307GL, and BHR4368GL. If your original battery no longer holds a charge or suction power has dropped off noticeably, this is the direct swap.

• G9, G10, P2010, P2045 compatibility: These models share the same 25.2V battery platform, connector pinout, and BMS handshake protocol. A single battery cell services all of them without adapter or modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the G9 motor platform. The BMS responded correctly to overcurrent conditions, cutting off cleanly under restricted airflow and recovering without fault codes once load was reduced.
• Dock charging habit on Dreame stick vacuums: Do not leave the vacuum sitting on the charging dock permanently. Dreame cordless vacuums on continuous dock charge develop capacity fade significantly faster than those charged only when the battery is depleted. Charge to full, then remove from the dock.

Suction dropping before the battery indicator reaches low

On the G9 and G10, suction can feel weak well before the LED indicates a low cell. This is almost always a motor voltage sag issue, not a battery fault. When the filter is partially blocked, the motor draws more current than rated to maintain airflow. That extra draw forces the cell voltage down under load, which the BMS reads as a near-depleted pack even when charge level is still above 50%. Clean or replace the filter first — if suction recovers, the battery is fine.

Motor cuts out mid-session then comes back on

This is a BMS overcurrent trip, not a dead battery. When suction is sustained against a blockage — carpet pile, a jammed pickup, or a clogged filter — current draw spikes past the BMS threshold and the pack disconnects to protect the cells. The motor restarts once the BMS resets, usually within a few seconds. Clear any blockage and check that the filter is seated correctly. If trips become frequent with no blockage present, check resting voltage with a multimeter — a healthy 25.2V pack at rest should read between 25.0V and 26.1V.