About this replacement
Samsung VR10M701PUW / SR10M701PUW Series — 21.6V Li-ion Replacement Battery (VCA-RBT71)
This is a 21.6V, 4600mAh Li-ion replacement battery for the Samsung POWERbot robotic vacuum range, including the VR10M701PUW, SR10M701PUW, VR10M702PUW, and SR10M702PUW, among others. It replaces OEM part numbers VCA-RBT71, DJ96-00193C, and DJ96-00202A. The battery powers the drive motors, suction motor, and navigation system simultaneously — all three draw from the same cell pack.
- VR10M / SR10M platform fit: These models share the same 21.6V battery bay, connector pinout, and BMS handshake protocol. The replacement cell pack communicates with the robot's charge management circuit the same way the original does — voltage thresholds and charge termination signals are matched to the platform.
- Bench tested on actual hardware: We ran this pack through full charge and discharge cycles on the VR10M701PUW. The BMS held cutoff voltage correctly, charge termination fired at the right threshold, and the robot's battery indicator tracked accurately from full to depleted.
- Dock charging behaviour on this robot: Do not leave this robot on the charging dock continuously between cleaning sessions. The VR10M series returns to dock automatically and resumes trickle input even when the pack is full — this accelerates capacity fade in Li-ion cells. Charge to full, then lift the robot off the dock until the next cleaning run.
Suction dropping before the battery indicator reaches low
The suction motor on the VR10M series draws significantly more current when airflow is restricted — a partially blocked filter can push draw well above the rated operating current. When that happens, cell voltage sags under load even though the pack still holds charge at rest. The BMS reads the sag as a low-voltage condition and throttles power to the motor to protect the cells. Clean or replace the filter first — if suction recovers, the pack is not the issue.
Motor cuts out mid-cycle then recovers after a few seconds
This is an overcurrent trip, not a dead battery. When the suction path is sustained-restricted — blocked brush roll, clogged filter, or the robot stuck against an obstruction — current draw spikes and the BMS trips to protect the cell pack. The robot pauses, the BMS resets once current normalises, and the motor restarts. Clear any blockage at the brush roll and inlet, clean the filter, and check that the replacement pack contacts are seated firmly — a loose contact can produce the same intermittent cutout symptom.