Coredy R300 Replacement Battery 14.4V 2600mAh Li-ion

Coredy R300 / R500 Series — 14.4V Li-ion Replacement Battery

This is a 14.4V 2600mAh Li-ion battery for the Coredy R300, R500, R500+, R550, and six additional models in the same robotic vacuum series. It slots into the battery compartment under the robot's chassis and powers both the suction motor and the auto-dock return system. Capacity is 2600mAh — use the original charger.

• R300 / R500 series fit: These models share the same 14.4V power rail, physical form factor, and BMS handshake protocol. A single cell covers the full range because the dock charger negotiates with the BMS at the same voltage threshold across all listed variants.
• Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on the R500 platform. The BMS engaged correctly at low-voltage cutoff, and the dock charge signal resumed without fault codes or interrupted cycles.
• Dock charging habit on robotic vacuums: Do not leave the robot parked on the dock permanently between uses. Continuous trickle charge from the dock degrades cell capacity faster than use-and-recharge cycles. Charge to full, then lift it off the dock until the next scheduled clean.

Suction dropping before the battery indicator shows low

The R300 and R500 suction motor draws significantly more current when the filter is partially blocked. That extra draw pulls the cell voltage down faster than the indicator circuit tracks, so suction weakens while the display still shows mid-charge. The BMS reads true cell voltage, not the indicator's averaged estimate. Clean or replace the filter first — if suction restores, the battery is not the cause.

Motor cuts out mid-cycle then recovers after a few seconds

This is a BMS overcurrent trip, not a flat battery. When suction intake is restricted — blocked brush roll, full dustbin, or clogged filter — the motor strains and current spikes past the BMS cutoff threshold. The BMS disconnects to protect the cell, then resets once current drops. Clear the restriction, confirm the dustbin is emptied, and check that the brush roll spins freely before restarting.