Eurobot XR210 14.4V Replacement Battery 3500mAh Ni-MH

Eurobot XR210 — 14.4V Ni-MH Replacement Battery

This is a 14.4V, 3500mAh Ni-MH battery pack for the Eurobot XR210 cordless vacuum cleaner. It replaces the original pack when capacity has dropped or the vacuum no longer holds a useful charge. Voltage and cell chemistry match the XR210's motor and charging circuit exactly.

• XR210 motor compatibility: The XR210 runs a brushed DC motor rated at 14.4V. Ni-MH chemistry at this voltage suits the motor's start-up current draw and the vacuum's charge management circuit. Dropping to a lower voltage pack causes the motor to underperform; exceeding it risks charger faults.
• Bench tested on actual hardware: We cycled this pack through full charge and discharge on a 14.4V Ni-MH test rig. The BMS held stable under simulated suction-motor load, with no premature cutoff at the rated 3500mAh draw rate.
• Dock charging habit on the XR210: Do not leave the XR210 sitting on the charging dock between uses. Ni-MH cells on continuous trickle charge develop capacity fade faster than cells charged only when depleted. Charge to full, then remove the vacuum from the dock.

Cordless vacuum losing suction before the battery indicator shows low

On the XR210, suction can drop noticeably while the battery indicator still reads mid-charge. This happens because the motor draws more current when the filter is partially blocked — voltage at the cells sags under the extra load even though stored capacity remains. The BMS reads voltage, not actual charge remaining, so the indicator lags behind the real state. Clean or replace the filter first; if suction recovers immediately, the battery is not the cause.

Motor cuts out mid-use and then recovers after a short pause

This is a BMS overcurrent trip, not a dead battery. When suction is restricted — blocked filter, blocked nozzle, carpet pile jamming the brush roll — the motor pulls sustained current above the BMS threshold and the pack shuts output to protect the cells. After a 10–20 second rest the BMS resets and the vacuum starts again. Clear the blockage, then check that filter airflow is unrestricted. If trips continue on a clean filter with a new pack, the motor itself may be drawing above spec.