Ikasumoto M-288 Cordless Vacuum Replacement Battery 14.4V 4000mAh

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

This is a 14.4V, 4000mAh Ni-MH battery pack built as a replacement for the Ikasumoto M-288 cordless vacuum cleaner. It slots into the M-288 and restores power to the motor when the original pack has lost capacity through repeated charge cycles. Voltage and cell count match the original pack specification.

• M-288 platform fit: The M-288 runs a 14.4V Ni-MH architecture with a fixed connector and BMS that expects a specific cell count and voltage curve. This pack uses the same sub-C cell configuration and discharge profile, so the vacuum's electronics read it correctly without modification.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on a 14.4V Ni-MH tester. The BMS accepted charge without fault, and the cell balance across the pack stayed within 20mV at full charge — consistent with factory-spec behaviour.
• Dock charging habit on the M-288: Do not leave the M-288 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.

Suction dropping before the battery indicator reaches low on the M-288

The M-288 motor draws significantly more current when the filter is partially blocked or the intake is restricted. That higher draw causes the cell voltage to sag under load, even when the pack is reading near full. The vacuum's control board interprets the voltage sag as a motor demand it can't meet and reduces power before the indicator triggers. Clean the filter and check the intake path first — if suction recovers immediately, the pack is fine and the restriction was the cause.

Motor cutting out mid-use and then recovering after a short pause

This pattern is a BMS overcurrent trip, not a cell failure. When the motor encounters sustained restriction — a dense carpet pile, a blocked nozzle, or a clogged filter — current draw spikes past the BMS threshold and the pack cuts output to protect the cells. After a brief rest, the BMS resets and the motor runs again. Clear the restriction, then check pack voltage with a multimeter: a healthy 14.4V Ni-MH pack at rest should read at or above 14.4V after a full charge.