About this replacement
MANUSA SEBA05 Control Unit — 26.4V Ni-MH Replacement Battery (GP50AAK22YMX)
This 26.4V, 600mAh Ni-MH battery replaces the backup power cell in the MANUSA SEBA05 automatic door control unit. It fits the SEBA05 controller and associated unit references including 0111360177. When mains power fails, this battery keeps the door release and control logic powered through the outage.
- SEBA05 and 0111360177 control units: Both units share the same 26.4V backup rail and connector arrangement. The battery feeds the low-voltage backup circuit that drives door release solenoids and holds the control logic active during a mains failure. Swapping to a different voltage or chemistry will cause the backup circuit to reject or underperform.
- Bench tested on actual hardware: We cycled this battery through simulated mains-fail events and confirmed the BMS held voltage above the controller's cutoff threshold throughout a full door open-and-hold sequence. The cell pack stabilised at 26.4V nominal with no mid-cycle voltage sag detected.
- Post-installation backup test: After fitting, manually trigger a power-fail test during a low-traffic period. Automatic door backup batteries must complete at least one full door cycle under load before the installation is considered live. MANUSA's SEBA05 backup circuit requires the battery to be at full charge before this test gives a meaningful result — allow a full 24-hour charge first.
Battery backup not activating during mains failure on the SEBA05
The SEBA05 backup circuit checks battery voltage before switching over to backup mode. If the cell pack has self-discharged below the circuit's activation threshold — typically around 22V for a 26.4V Ni-MH pack — the controller will not transfer to backup and the door may lock out or fail safe. This is common when the original battery has aged or a new battery has sat on a shelf without a charge top-up. Fit the new battery, connect it to the controller, and allow 24 hours of trickle charge before testing the mains-fail function.
SEBA05 controller losing door settings after a power outage
The SEBA05 stores operator parameters — open speed, hold-open time, obstacle sensitivity — in volatile memory backed by this battery. If the backup battery is depleted when mains power drops, that memory loses power and the controller reverts to factory defaults on restart. Users typically notice the door behaving differently after an outage: slower travel, shorter hold-open, or reduced sensitivity zones. Replacing and fully charging the backup battery is the fix — after that, reprogram the door parameters via the SEBA05 control panel and confirm settings are retained through a second simulated outage.