Amarey A800 Cordless Vacuum Replacement Battery 14.4V 2600mAh

Amarey A800 / A900 — 14.4V Li-ion Replacement Battery

This is a 14.4V 2600mAh lithium-ion battery pack for the Amarey A800 and A900 cordless stick vacuums. It slots into the same bay as the original and runs the same 14.4V motor rail. Capacity is 2600mAh (37.44Wh), matching the stock specification.

• A800 and A900 shared platform: Both models run the same 14.4V motor bus and use the same battery bay geometry. One battery covers both units — the voltage rail, connector pinout, and BMS handshake are identical across the two.
• Bench tested on actual hardware: We ran this cell through charge cycles on an A800 chassis. The BMS held cutoff at the correct lower threshold and did not trip during normal suction load. Charge acceptance matched the dock timing of the factory cell.
• Dock charging habit for the A800 and A900: Do not leave the vacuum sitting on the dock continuously between uses. These models trickle-charge when docked and the BMS does not interrupt that current once full. Charge to full, then remove from the dock until the next use.

Suction dropping before the battery indicator reaches low

This happens when the motor draws more current than the BMS expects and the cell voltage sags under load before the indicator registers depletion. A partially blocked filter forces the motor to work harder, pulling sustained high current that triggers voltage sag without a low-battery signal. The vacuum feels underpowered while the indicator still shows charge remaining. Clear the filter first — if suction recovers, the battery was not the fault.

Motor cutting out mid-clean and recovering after a pause

This is a BMS overcurrent trip, not a flat battery. When airflow is restricted — blocked filter, full dust cup, or a hair tangle at the brush roll — the motor draws above the BMS current threshold and the protection circuit cuts output. The pause resets the trip and power returns. Fix the restriction before assuming the battery is at fault. If cut-outs persist after clearing the filter and dust cup, check that cell voltage at rest is above 12.0V with a multimeter.