About this replacement
Vileda M-H498 — 14.4V Ni-MH Replacement Battery (91706363)
This is a 14.4V, 3000mAh Ni-MH replacement battery for the Vileda M-H498 cordless handheld vacuum. It fits using OEM part number 91706363. Order this when the original pack no longer holds charge or the vacuum loses suction well before the battery indicator drops.
- M-H498 platform fit: The M-H498 runs a 14.4V Ni-MH architecture with a specific cell count and connector orientation. This replacement matches that cell configuration, so the charger and BMS communicate the same way they did with the factory pack.
- Bench tested on actual hardware: We cycled this pack through the M-H498's motor load profile. The BMS held steady across standard floor and upholstery suction modes, with no overcurrent trips on clean filters.
- Dock charging habit on the M-H498: The M-H498 charger does not automatically cut off once the pack is full. Leaving the vacuum on the dock continuously applies a trickle current that degrades Ni-MH cells faster than regular charge cycles. Charge to full, then remove it from the dock.
Suction dropping before the battery indicator shows low
Ni-MH cells under load show a voltage sag that the indicator circuit does not always register as low battery. When the motor draws higher current — through a partially blocked filter or a dense carpet pass — cell voltage dips enough to reduce motor speed and suction, even while the indicator still reads mid-range. This is not a faulty battery reading; it is real voltage drop under load. Clean or replace the filter first, then retest. If suction recovers, the filter was the cause, not the pack.
Motor cutting out mid-use and then recovering after a few seconds
This pattern is a BMS overcurrent trip, not a dead battery. When airflow is restricted — blocked filter, full dust cup, or a jammed nozzle — the motor works harder and draws current above the BMS threshold. The BMS cuts the circuit to protect the cells, then resets after a short cool-down. Clear the blockage and empty the dust cup before the next run. If the cutout persists on a clean filter with this replacement pack, check that the dust cup seal is seated correctly, as air leaks force the motor to compensate by drawing more current.