Hoover BD20010 Replacement Battery 7.2V 3000mAh

Hoover BD20010 / CH20000 — 7.2V Ni-MH Replacement Battery (2SZ2800000)

This is a 7.2V, 3000mAh Ni-MH replacement battery for the Hoover BD20010 and CH20000 cordless handheld vacuums. It matches the OEM part number 2SZ2800000 and slots directly into the battery compartment of both models. Capacity is rated at 21.6Wh — identical to the original specification.

• BD20010 and CH20000 compatibility: Both models run on the same 7.2V motor rail and use an identical battery housing and connector format. The BMS handshake is consistent across both — one replacement covers either unit without modification.
• Bench tested on actual hardware: We cycled this cell through the BD20010 motor under load, including carpet-level suction draw. The BMS held within expected current limits and did not trip during sustained use with a clean filter installed.
• Dock charging on the BD20010: Do not leave the vacuum sitting on the charging dock permanently. Continuous trickle charging accelerates capacity fade in Ni-MH cells faster than in lithium chemistries. Charge to full, then remove from the dock until the next use.

Suction dropping before the battery indicator reaches low

This is a voltage sag issue, not always a dead battery. When the filter is partially blocked, the motor draws more current than rated to maintain suction pressure. That elevated draw pulls the cell voltage down faster than normal, causing suction to weaken while the indicator still reads mid-range. Clean or replace the filter first — if suction recovers, the battery is likely fine.

Motor cutting out mid-use and then recovering after a short pause

This pattern points to a BMS overcurrent trip rather than a flat battery. The BMS cuts the circuit when sustained current draw exceeds the cell's safe threshold — most often triggered by restricted airflow forcing the motor to work harder. After a short pause, the BMS resets and the vacuum runs again briefly before tripping once more. Clear the filter and check the suction path for blockages; if the motor runs cleanly after that, the battery is not the cause.