Panasonic MC-RM10-W Robotic Vacuum Replacement Battery 12V 2000mAh

Panasonic MC-RM10-W / Rollan MC-RM10 — 12V Ni-MH Replacement Battery (AVV97V-RN)

This is a 12V 2000mAh (24Wh) Ni-MH battery for the Panasonic MC-RM10-W and Rollan MC-RM10 robotic vacuum cleaners. It replaces OEM part AVV97V-RN when the original cell loses capacity or stops holding charge. The battery slots into the same physical bay and connects to the same charging and motor circuit as the factory unit.

• MC-RM10-W and Rollan MC-RM10 fitment: Both models run the same 12V motor rail and use the same AVV97V-RN battery format — identical connector, cell count, and BMS interface. One battery covers both variants.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the MC-RM10 platform. The BMS accepted the cell without fault codes, and the motor draw stayed within spec across hard floor and low-pile carpet transitions.
• Dock charging habit on this robot: The MC-RM10 returns to its dock automatically after each clean and stays connected until the next run. Ni-MH cells degrade faster under continuous trickle charge than lithium cells do. Remove the battery or power off the dock after the charge indicator clears to slow capacity fade.

Suction dropping before the battery indicator reaches low on the MC-RM10

The MC-RM10 motor draws harder when airflow is restricted — a partially blocked filter forces the motor to pull more current than rated. This extra draw causes voltage to sag under load even when the cell still shows remaining charge. The robot reads the sag as reduced power and cuts motor speed to protect the circuit. Clean or replace the HEPA filter first — if suction recovers, the battery was not the cause.

Battery fade after months of leaving the MC-RM10 on the dock between cleans

Ni-MH cells develop capacity fade when held at full charge under trickle current for extended periods — a pattern built into auto-return dock designs. The charger does not fully cut off once capacity is reached; it maintains a low holding current that slowly degrades the cells. Over weeks, total usable capacity drops noticeably even though the battery technically accepts a full charge. Charge only when depleted and remove from the dock once the indicator shows full.