iRobot Roomba 614 Replacement Battery 14.4V 5200mAh 1800LI

iRobot Roomba 614 / 640 Series — 14.4V Li-ion Replacement Battery (1800LI)

This is a 14.4V Li-ion replacement battery rated at 5200mAh (74.88Wh) for the iRobot Roomba 614 and related 600-series robotic vacuums. It replaces OEM parts 1800LI, 2130LI, 4374392, 4376392, 4462425, and 4502233. Fit models include the Roomba 614, 615, 640, and 652, among others sharing the same battery bay and connector format.

• 600-series platform compatibility: The Roomba 614, 615, 640, and 652 all share the same 14.4V battery bay, locking tab geometry, and BMS handshake protocol. The same cell pack satisfies the charger's voltage recognition on every unit in this group.
• Bench tested on actual hardware: We ran this cell through full charge cycles on a 614 chassis and monitored BMS communication with the base station. The protection circuit responded correctly to both docking charge and direct connector charging without triggering false-low warnings.
• Dock charging habit on the 600 series: The Roomba 614 is built to self-dock, which encourages leaving it on the base continuously. Li-ion cells kept at 100% under trickle charge degrade faster than cells cycled normally. Charge to full, run the unit, then re-dock only when depleted.

Suction dropping before the battery indicator reaches low on the 614

The Roomba 614's motor draws significantly more current when the filter is partially blocked or the brush roll encounters thick carpet. A worn cell cannot sustain voltage under that elevated draw, so suction weakens even though the charge indicator still reads mid-range. The battery management system reads state of charge at rest, not under load — which is why the indicator lags behind actual performance. If suction recovers after a full charge but drops again quickly, the cell is losing voltage under load rather than losing total capacity.

Motor cutting out mid-clean and then restarting on its own

This is a BMS overcurrent trip, not a software fault. When the brush roll or intake is restricted, the motor pulls more amps than the protection circuit allows — the BMS cuts output to protect the cell, and the unit pauses. After a few seconds, the BMS resets and the motor restarts. Check the filter and brush roll for blockages before assuming the battery is faulty. If the cutout stops after clearing the restriction, the battery is functioning correctly — the protection circuit did exactly what it should.