Pro modely SVC 9020 BK Replacement Battery 14.4V 2000mAh

Pro modely SVC 9020 BK / SVC 9031 Series — 14.4V Ni-MH Replacement Battery

This is a 14.4V 2000mAh Ni-MH replacement battery for the Pro modely SVC 9020 BK, SVC 9020 RD, SVC 9031, and SVC 9031 BK cordless handheld vacuums. It replaces the original cell pack that powers the vacuum motor across all standard cleaning tasks — floors, carpet, and upholstery. Capacity is 2000mAh (28.8Wh), matching the factory specification.

• SVC 9020 and 9031 platform compatibility: Both the 9020 and 9031 variants run the same 14.4V motor rail and share the same physical battery housing dimensions (91.91 × 67.35 × 44.58mm). The cell count and pack voltage are identical across the colour variants, so one replacement covers the full range.
• Bench tested on actual hardware: We cycled this pack through full charge and load discharge on a 14.4V motor draw. The BMS held within spec under sustained suction load, and cell voltage stayed balanced across the Ni-MH array through multiple cycles without premature cutoff.
• Dock charging on Ni-MH vacuums: Do not leave this vacuum on the charging dock permanently. Ni-MH cells in cordless vacuums develop capacity fade significantly faster under continuous trickle charge than cells charged only when depleted. Charge to full, then remove from the dock.

Suction dropping before the battery indicator reaches low

Ni-MH cells under load show a voltage curve that drops sharply when a restricted airflow path forces the motor to draw above its rated current. On the SVC 9020 and 9031, a clogged filter or partial blockage can trigger this before the indicator registers a low state. The motor pulls harder against the restriction, the cell voltage sags, and the vacuum loses suction — even though the battery still holds charge. Clear the filter and check the inlet path first; the indicator is calibrated for unobstructed draw, not restricted operation.

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

This is a BMS overcurrent trip, not a dead battery. When sustained suction restriction raises current draw past the pack's protection threshold, the BMS opens the circuit to prevent cell damage. The pack recovers once current demand drops — which is why a short pause brings the vacuum back. Check the filter and inlet for blockage before replacing the battery. If the cutout happens with a clean filter and clear airflow, measure resting pack voltage; a healthy 14.4V Ni-MH pack at full charge should read at or above 16.8V across the terminals.