Bosch BHN16L 14.4V Cordless Vacuum Replacement Battery 2500mAh

Bosch BHN16L / Move 16V — 14.4V Li-ion Replacement Battery (801BPV144-01)

This 14.4V 2500mAh (36Wh) Li-ion battery replaces the original pack in the Bosch BHN16L, BHN16L/04, and Move 16V cordless handheld vacuums. It matches the OEM voltage rail and connector, and the BMS communicates with the vacuum's motor controller the same way the factory pack does. Capacity figures are taken from product data, not estimated from third-party sources.

• BHN16L and Move 16V platform fit: These models share the same 14.4V battery bay, connector pinout, and BMS handshake protocol. One replacement pack covers all three variants without modification.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the BHN16L motor controller. The BMS held cutoff thresholds within spec and did not trigger false overcurrent trips under normal suction load.
• Dock charging habit on cordless vacuums: Do not leave this vacuum sitting on the charging dock permanently. Continuous dock contact delivers a low-level trickle charge that accelerates capacity fade on Li-ion cells. Charge to full, then remove from the dock until the next use.

Suction dropping before the battery indicator reaches low

The BHN16L motor controller reads voltage from the battery pack to set fan speed. When the filter is partially blocked, the motor draws more current than rated to maintain airflow, which pulls cell voltage down faster than the indicator circuit expects. The indicator shows mid-charge while actual pack voltage has already sagged below the motor's efficient operating range. Clean or replace the filter first — if suction recovers, the battery was not the cause. If the pack voltage at rest reads below 12.8V after a full charge, the cells have degraded and replacement is the next step.

Motor cuts out mid-use then restarts after a few seconds

This is a BMS overcurrent trip, not a power failure. The protection circuit cuts output when current draw spikes above the trip threshold — most often caused by a blocked filter or nozzle forcing the motor to work against restricted airflow. The BMS resets automatically once current normalises, which is why the vacuum restarts on its own. Clear any blockage and check the filter before assuming the battery is at fault. If the cutout persists on an unobstructed vacuum, check that pack voltage under load does not drop below 10.8V, which would indicate cell degradation rather than a BMS trip.