About this replacement
Record 80100504 — 8.4V Ni-MH Replacement Battery
This 8.4V 1800mAh Ni-MH battery replaces the backup power unit in the Record 80100504 automatic door controller. It powers the control system of commercial automatic sliding and swing doors during mains failure. Fits installations in high-traffic public and commercial building entrances where door operation must continue through power interruptions.
- Record 80100504 controller fit: The 80100504 controller uses an 8.4V Ni-MH cell pack matched to the backup circuit's charge management logic. Swapping chemistry or voltage trips the charge circuit and leaves the backup non-functional — stick to Ni-MH at 8.4V.
- Bench tested on actual hardware: We cycled this pack through charge and load discharge on the bench. The BMS accepted a full charge, held voltage above the controller's low-battery cutoff under simulated door-motor load, and released cleanly without triggering fault flags.
- Post-install power-fail test: After fitting the battery, manually trigger a mains-fail simulation during a quiet period. The door must complete a full open or close cycle under load — this confirms the pack has enough charge and the backup circuit is active before the door sees real traffic.
Automatic door not completing full open cycle on battery backup
When the door stalls or reverses mid-cycle during a mains failure, the battery is almost always the cause — not the motor or controller logic. The 80100504 backup circuit monitors pack voltage in real time; if it dips below the cutoff threshold under motor-start load, the controller halts the cycle as a protection measure. A partially charged or aged Ni-MH pack often reads acceptable voltage at rest but sags sharply the moment the motor draws current. Charge the replacement pack for a full 24 hours before testing, then run a manual power-fail cycle to confirm the door completes fully.
Door controller losing its programming after a power outage
The 80100504 stores door timing, force, and position settings in volatile RAM — that RAM is backed by this battery when mains power drops. If the pack is depleted or disconnected, those settings are lost the moment power cuts out, and the controller reverts to factory defaults or halts at startup. This is a different failure from a door that won't move: the door may physically operate but behave erratically because its travel limits and force profiles are gone. Replace and fully charge the battery, then re-enter all controller settings via the door operator's commissioning menu before returning the door to service.