Sencor BP290 Cordless Vacuum Replacement Battery 14.4V 3000mAh

Sencor SVC 8000 Series — 14.4V Ni-MH Replacement Battery (BP290)

This is a 14.4V, 3000mAh Ni-MH replacement battery for the Sencor SVC 8000 cordless vacuum cleaner. It fits the SVC 8000, SVC 8000A, SVC 8000B, and SVC 8000 S models. The OEM part number is BP290.

• SVC 8000 series fit: The SVC 8000, 8000A, 8000B, and 8000 S all run the same 14.4V battery rail, use the same BP290 connector format, and share the same BMS handshake protocol — so one cell covers all four variants.
• Bench tested on actual hardware: We ran this battery through full charge-discharge cycles on an SVC 8000 unit. The BMS responded correctly at both ends — no false low-voltage cutoff on startup and no overcharge flag at the top of the charge cycle.
• Dock charging on the SVC 8000: Do not leave the vacuum sitting on the charging dock permanently. Ni-MH cells in continuous trickle charge lose capacity significantly faster than cells charged only when depleted. Charge to full, then remove from the dock.

Suction dropping before the battery indicator reaches low

The SVC 8000 motor draws noticeably more current when airflow is restricted — a partially blocked filter forces the motor to work harder, pulling voltage down under load. The battery indicator reads remaining charge at rest, not under load, so it can show mid-range while the motor is already starved. The BMS sees the voltage sag and reduces output to protect the cell, which the user feels as a suction drop. Clean or replace the filter first before concluding the battery is at fault.

Motor cuts out briefly then recovers during heavy carpet use

This is a BMS overcurrent trip, not a dead battery. When the vacuum head is pushed hard into thick carpet, the motor draws a sustained high current — especially if suction is partially restricted. The BMS trips the output to protect the cell, power drops for a second or two, then the BMS resets and power returns. Clear the filter and check the brush roll for hair wrap before the next use — reducing the load on the motor keeps the draw below the BMS trip threshold.