Bosch BBH3PETGB/01 Replacement Battery 25.2V 2600mAh

Bosch BBH3PETGB/01 Series — 25.2V Li-ion Replacement Battery (828BPV252-01)

This 25.2V, 2600mAh (65.52Wh) lithium-ion battery fits the Bosch BBH3PETGB/01 and a range of related cordless stick vacuums. It replaces OEM part 828BPV252-01 and cross-references 12026529 and NV-BFXX. Fit models include the BBH3PETGB/03, BBH3ZOO25/01, and BBH3ZOO25/03, among others.

• BBH3 platform compatibility: These models share a common 25.2V cell stack, connector pinout, and BMS handshake protocol. The battery communicates charge state and thermal data back to the vacuum's motor controller — swapping to a cell with a different BMS profile causes the unit to refuse startup or cut mid-cycle.
• Bench tested on actual hardware: We ran this battery through repeated charge and discharge cycles on the BBH3 platform. The BMS held the low-voltage cutoff correctly, thermal monitoring responded as expected under sustained motor load, and the charger handshake completed without error at each cycle.
• Dock charging habit on BBH3 vacuums: Do not leave the vacuum sitting on the charging dock permanently. Continuous trickle charge on these Li-ion cells accelerates capacity fade. Charge the battery fully, then remove it from the dock until the next use.

Suction dropping before the battery indicator reaches low

On the BBH3 platform, suction loss often has nothing to do with remaining charge. When the filter is partially blocked, the motor works harder to maintain airflow, drawing current above its rated load. The BMS reads this as a high-draw event and begins throttling power output to protect the cell. The vacuum feels like it's running out of battery, but the indicator still shows mid-range.

Motor cuts out completely then recovers after a few seconds

This is a BMS overcurrent trip, not a dead battery. When suction is restricted — blocked filter, clogged nozzle, or hair wrap at the brush head — the motor spikes current draw past the BMS threshold. The protection circuit interrupts output, the motor stops, and the BMS resets once the overcurrent condition clears. Check and clean the filter first. If the cutout continues on a clear filter, verify cell voltage is above 22V before ruling out a degraded battery.