Bosch 828BPV216-01 21.6V Cordless Vacuum Replacement Battery 2600mAh

Bosch BBH3ALL23 Series — 21.6V Li-ion Replacement Battery (828BPV216-01)

This is a 21.6V 2600mAh Li-ion replacement battery for the Bosch 323204 23/01 and BBH3ALL23 cordless stick vacuum range. It fits the full BBH3ALL23 family including the /03 and /04 variants, restoring full motor voltage to the suction head. Capacity is 2600mAh (56.16Wh) — matched to the original specification.

• BBH3ALL23 platform fit: All models in the BBH3ALL23 line share the same 21.6V cell stack, connector pinout, and BMS handshake protocol. Swapping this battery into any variant in the series does not require a firmware or connector workaround.
• Bench tested on actual hardware: We cycled this cell through the BBH3ALL23 charger and confirmed the BMS completed a full charge handshake without fault codes. Cell voltage held at 21.6V nominal across draw cycles on both hard floor and carpet motor load settings.
• Dock charging behaviour on this vacuum: Do not leave the vacuum sitting on the charging dock permanently. Continuous dock contact keeps the BMS in a low-level trickle state that accelerates capacity fade on this cell chemistry. Charge to full and remove from the dock between uses.

Suction dropping before the battery indicator reaches low

The BBH3ALL23 motor draws significantly more current when airflow is restricted — a partially blocked filter forces the motor to compensate, pulling the cell voltage down faster than the indicator circuit tracks. The indicator reads state-of-charge, not real-time voltage under load, so it can show two bars while the motor is already voltage-starved. Under these conditions the suction drops noticeably before any low-battery warning appears. Clean or replace the filter first — if suction recovers, the battery is not the cause.

Motor cuts out mid-clean then restarts after a short pause

This is a BMS overcurrent trip, not a dead battery. When sustained suction restriction causes current draw to spike beyond the BMS threshold, the protection circuit opens and shuts the motor off. The BMS resets automatically after a few seconds once current demand drops, which is why the vacuum restarts on its own. Check the filter and check the brush-roll for trapped debris — both create the sustained high-draw condition that triggers the trip. Clear the restriction and the cutout stops.