About this replacement
Dirt Devil Libero M606 Series — 14.4V Ni-MH Replacement Battery (0607004)
This is a 14.4V 1800mAh Ni-MH replacement battery for the Dirt Devil Libero M606, M606-1, M606-2, and M606-3 cordless stick vacuums, plus three additional Libero variants. It replaces OEM part numbers 0607004 and 0612014. The pack dimensions are 101.50 × 43.75 × 29.60mm and it delivers 25.92Wh of stored energy.
- Libero M606 series fit: All M606 variants share the same 14.4V battery rail, connector format, and BMS handshake. One pack covers the full range. No pinout differences between M606-1, M606-2, and M606-3.
- Bench tested on actual hardware: We cycled this pack through repeated suction loads on the M606 motor. The BMS held voltage above the cutoff threshold under sustained carpet-level draw, and the protection circuit tripped cleanly when current exceeded safe limits before resetting without fault codes.
- Dock charge discipline for Ni-MH cells: Remove the vacuum from the charging dock once the pack reaches full charge. Ni-MH chemistry is especially vulnerable to continuous trickle current — cells left permanently docked lose usable capacity within weeks, not months.
Suction dropping before the battery indicator reaches low
The M606 motor draws higher current when airflow is restricted — a partially clogged filter forces the motor to work harder to maintain suction. That extra draw pulls the battery voltage down faster than the indicator accounts for. The BMS reads a low-voltage condition and reduces power output before the indicator LED changes. Clean or replace the filter first — voltage sag under load will stabilise once airflow restriction is removed.
Motor cutting out mid-clean and then recovering on its own
This is a BMS overcurrent trip, not a failed battery. When suction is sustained against a blockage — hair wrap around the brush roll or a clogged filter — current spikes past the BMS protection threshold and the pack shuts output. After a short thermal recovery period the BMS resets and the motor runs again. Clear the blockage, check the filter, and test with open airflow. If the cutout stops, the battery is fine — the restriction was the trigger.