OBH Nordica EO99 Cordless Vacuum Replacement Battery 32.4V 2000mAh

OBH Nordica EO99 Series — 32.4V Li-ion Replacement Battery

This is a 32.4V, 2000mAh (64.8Wh) Li-ion replacement battery for the OBH Nordica EO99 cordless vacuum cleaner. It fits the EO99, EO99F1NO/4Q0, EO99F1NO/4Q2, and EO99F1NO/4Q3 variants. Replace it when the original no longer holds a useful charge or fails to power the motor at full suction.

• EO99 variant compatibility: The 4Q0, 4Q2, and 4Q3 suffix models share the same 32.4V battery architecture, connector pinout, and BMS communication protocol. One cell fits all four listed variants without modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the EO99 platform. The BMS handshake completed correctly, overcurrent protection tripped at the expected threshold under load, and the charger accepted the pack without fault codes.
• Dock charging habit on the EO99: Do not leave the EO99 sitting on its charging dock continuously between uses. Cordless vacuums on permanent dock charge experience capacity fade faster than units charged only when depleted. Charge to full, then remove from the dock.

Cordless vacuum losing suction before the battery indicator reaches low

The EO99 motor draws significantly more current when airflow is restricted — a partially blocked filter or obstructed head forces the motor to work harder at the same speed. That increased draw causes the battery voltage to sag under load, which the BMS reads as a low-cell condition even when the pack still has charge remaining. The suction drops because the BMS throttles output to protect the cells, not because the battery is actually depleted. Clean the filter first — if suction recovers immediately, the battery is not the cause.

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

This is a BMS overcurrent trip, not a dead battery. When the vacuum head meets resistance — thick carpet, a blockage, or a clogged filter — the motor current spikes above the BMS cutoff threshold and the pack disconnects to protect the cells. After the BMS resets (typically within seconds), power returns. The fix is to clear any blockage and clean the filter so the motor stays within its rated draw. If trips continue on a clean, unobstructed machine, check resting cell voltage — a degraded pack that sags below 27V under load will trip the BMS on every high-draw pass.