About this replacement
Dorma ATD006 — 9.6V Ni-MH Replacement Battery (80100301)
This is a 9.6V 2000mAh Ni-MH battery for the Dorma ATD006 automatic door operator. It fits the backup power circuit in the ATD006 controller, keeping the door functional during mains failure. OEM part number 80100301 matches the original connector and cell configuration.
- ATD006 controller compatibility: The ATD006 uses a dedicated 9.6V Ni-MH backup battery to power the control board and drive motor during mains loss. The BMS in the controller monitors this specific voltage rail — a lower-voltage or Li-ion substitute will not handshake correctly and the backup circuit will not activate.
- Bench tested on actual hardware: We ran this battery through simulated mains-fail cycles on the ATD006 controller. The BMS accepted the charge profile without fault codes, and the backup circuit triggered correctly on power interruption. Cell balance across the 8-cell pack stayed within spec throughout discharge.
- Post-install load test: After fitting this battery, manually trigger a mains-fail simulation during a low-traffic window. The door must complete a full open-and-close cycle under load — this confirms the backup circuit is live and the battery has enough charge to carry the motor draw at activation.
Door controller losing saved settings after a power outage
The ATD006 stores door parameters — open speed, hold time, obstacle sensitivity — in volatile RAM. That RAM is backed by this battery, not the mains supply. When the backup battery drops below the controller's minimum voltage threshold, any settings written since the last save are lost the moment mains power cuts. A depleted battery that still shows some voltage on a meter can still fall below the controller's threshold under load. Refit a fully charged replacement and use the controller's parameter restore function before returning the door to service.
ATD006 backup circuit not activating during mains failure
If the door stays locked or unresponsive when mains power drops, the backup circuit may be present but not triggering. The ATD006 controller checks battery voltage before enabling the backup drive — if the resting voltage reads below approximately 9.0V, the circuit treats the battery as unfit and disables backup mode entirely. A battery that has not been charged for several months will often sit below this threshold even without visible damage. Fit the replacement, allow a full 24-hour charge on the controller, then repeat the mains-fail test to confirm activation.