Ecoh M-288 Replacement Battery 14.4V 2000mAh Ni-MH

Ecoh M-288 — 14.4V Ni-MH Replacement Battery

This is a 14.4V, 2000mAh Ni-MH replacement battery for the Ecoh M-288 cordless vacuum cleaner. It slots into the M-288 to restore suction power after the original cell has lost capacity or stopped holding charge. Capacity figure is taken from the product specification at 28.8Wh.

• M-288 platform fit: The M-288 runs a 14.4V motor rail with a Ni-MH cell pack. This replacement matches that voltage and cell chemistry, so the motor controller sees the same charge curve it expects from the factory pack.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on the M-288 motor load. The BMS held stable through both carpet and hard-floor draw cycles, with no cutoff trips under normal suction conditions.
• Dock charging on the M-288: Do not leave the M-288 on the charging dock continuously. Ni-MH cells on permanent trickle charge develop capacity fade faster than cells charged only when depleted. Charge to full, then remove the vacuum from the dock.

Suction dropping before the battery indicator reaches low

The M-288 motor draws more current when airflow is restricted — a clogged filter forces the motor to work harder, pulling the cell voltage down faster than the indicator tracks. The indicator measures state of charge, not live voltage under load, so it can still show half-full while the motor is already starved. Under sustained high draw, the cell sags below the motor controller's minimum operating voltage and suction falls off noticeably. Check and clear the filter first — if suction recovers, the battery is not the cause.

Motor cuts out mid-clean then recovers after a short pause

This pattern is a BMS overcurrent trip, not a dead battery. It happens when the motor draws a sustained spike — usually from a blockage or a heavily restricted filter pushing current above the BMS threshold. The BMS cuts the circuit to protect the cell, then resets once current drops and temperature settles. Clear any blockage, clean the filter, and check that the cell seated fully in the battery compartment. If the trips continue on a clean filter with no blockage, measure resting voltage — a healthy Ni-MH cell at full charge should read above 16.8V across the pack.