Bosch 828BPV216-01 Cordless Vacuum Replacement Battery 21.6V 3400mAh

Bosch 323204 23/01 / BBH3ALL23 Series — 21.6V Li-ion Replacement Battery (828BPV216-01)

This 21.6V 3400mAh Li-ion battery pack replaces part number 828BPV216-01 in Bosch cordless stick vacuums including the 323204 23/01 and BBH3ALL23 range. It fits the same battery bay, connects to the same charging circuit, and carries the same BMS communication the vacuum's motor controller expects. Capacity is 3400mAh / 73.44Wh, matching the original specification.

• BBH3ALL23 platform compatibility: The BBH3ALL23 series — including the /03 and /04 hardware revisions — shares one battery bay geometry and one BMS handshake protocol. A single cell format covers all variants because Bosch did not change the connector pinout or communication lines between hardware revisions.
• Bench tested on actual hardware: We cycled this pack through full charge and discharge on a BBH3ALL23 unit. The BMS reported cell status correctly to the vacuum's indicator, cutoff triggered cleanly at low-cell-voltage threshold, and the charger completed its full CC/CV sequence without error flags.
• Dock charging on the BBH3ALL23: Remove the vacuum from the charging dock once the indicator shows full. The BBH3ALL23 dock does not terminate charge and then fully disconnect — it continues applying a low-level trickle current. Over weeks, that sustained trickle compresses cell capacity noticeably faster than standard charge-then-remove cycles.

Suction dropping before the battery indicator reaches low on the BBH3ALL23

The BBH3ALL23 motor draws harder when airflow is restricted — a blocked filter or partial blockage in the nozzle causes the motor to pull more current at the same RPM target. That elevated draw creates a voltage sag across the cell pack, which the BMS reads as lower state-of-charge than the cells actually hold. The indicator drops early and suction feels weak, but the battery itself is not the root cause. Clear the filter and check the nozzle path before concluding the battery has failed — a clean airway restores the current draw to within the rated band.

Motor cuts out mid-clean and then recovers after a few seconds

This is a BMS overcurrent trip, not a battery fault. When the nozzle path is partially blocked, sustained restricted airflow makes the motor draw current above the BMS's overcurrent threshold. The BMS disconnects output to protect the cells, the vacuum goes silent, and a few seconds later the BMS resets and restores power. The cycle repeats until you clear the blockage. Check the filter first — a clogged foam or HEPA filter is the most common trigger — then inspect the nozzle and the duct between nozzle and bin. Restoring free airflow drops current draw back below the 21.6V pack's trip threshold.