Nordischer OB EO99 32.4V Replacement Battery 2000mAh Li-ion

Nordischer OB EO99 Series — 32.4V Li-ion Replacement Battery (GS_20_20_001495)

This 32.4V, 2000mAh (64.8Wh) lithium-ion battery fits the Nordischer OB EO99 cordless stick vacuum and its EO99F1NO variants. It replaces OEM part numbers GS_20_20_001495, SS-2230002589, and ZR905001. When the original cell loses capacity and suction drops well before the indicator reaches low, this is the direct swap.

• EO99 and EO99F1NO variant fit: The EO99F1NO/4Q0, /4Q2, and /4Q3 models share the same 32.4V battery architecture, connector pinout, and BMS handshake protocol. One cell covers all three production revisions without modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the EO99 platform. The BMS held cutoff correctly under motor-start surge and settled at a stable discharge curve across the full capacity range.
• Dock charging behaviour on the EO99: Do not leave the vacuum sitting on the charging dock indefinitely. Continuous dock connection exposes this cell chemistry to low-level trickle current that accelerates capacity fade. Charge to full, then remove from the dock.

Suction dropping before the battery indicator reaches low

The EO99 motor draws harder when the filter is partially blocked — airflow restriction forces the motor to work beyond its rated current draw. The BMS reads this as a high-drain event and begins throttling voltage output to protect the cell, which the user feels as lost suction. The battery indicator may still show two bars because cell voltage hasn't collapsed — the throttle is happening upstream of what the indicator measures. Clean the filter first, then retest. If suction recovers, the battery is not the issue.

Motor cuts out mid-clean then restarts after a few seconds

This is a BMS overcurrent trip, not a dead battery. When the vacuum hits a dense carpet pile or a sustained blockage, current demand spikes. The BMS cuts the output circuit to protect the cell, then resets once thermal and current conditions drop. On the EO99, this trip-and-recover cycle usually points to a blocked brush roll or clogged post-motor filter — both force sustained high current draw. Clear the blockage, check the post-motor filter, and the trip threshold should not be reached again under normal use.