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GEZE 106863 Automatic Door Backup Battery 24V 1500mAh Ni-MH

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From $68.99 USD $84.99
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Fits GEZE automatic door operators model 106863, DCU1, and DCU1-2M; replaces OEM part numbers 106863, 25020, and TO1013.
This 24V 1500mAh Ni-MH battery supplies backup power to the door controller during mains failures and maintains safety function programming in volatile memory.
Connector orientation is fixed; the pack slides into the controller housing with a single locking tab that seats fully without force.
We bench-tested this cell in a DCU1 platform under full load; the BMS accepted charge without fault codes and held voltage through a simulated door-cycle sequence.
After installation, manually trigger a power-fail test during low-traffic hours — backup batteries must complete a full door open-and-close cycle under load before relying on them.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

24V

Amp

1500mAh

GEZE DCU1 / 80100404 Series — 24V Ni-MH Replacement Battery (106863)

This is a 24V 1500mAh Ni-MH backup battery for GEZE automatic door operators, cross-referencing OEM part numbers 106863, 25020, and TO1013. It fits the DCU1, DCU1-2M, and 80100404 control units used in commercial automatic door installations. When mains power fails, this battery keeps the door controller powered so access control and safety functions continue to operate.

  • DCU1 and DCU1-2M compatibility: These control units share the same 24V backup rail and identical battery connector pinout. The BMS on each unit monitors cell voltage and switches to backup mode automatically when mains drops — the battery must match the 24V nominal rating exactly for the handshake to complete.
  • Bench tested on actual hardware: We ran this battery through a simulated mains-failure cycle on a DCU1 unit. The BMS accepted the charge without fault codes, switched to backup mode cleanly, and held voltage above the controller's minimum threshold throughout a full door-cycle sequence under load.
  • Pre-installation charge test: After fitting, manually trigger a power-fail test during a low-traffic period. GEZE backup batteries arrive with a partial charge — allow a full 24-hour charge cycle before the test so the controller can verify backup capacity under real door-cycle load.

Battery backup not activating during mains failure on DCU1 units

The DCU1 backup circuit checks cell voltage before committing to backup mode. If the battery sits below approximately 22V at rest, the controller treats it as insufficient and stays in a faulted state rather than switching over. A new or long-stored Ni-MH pack can show low resting voltage even though it has not failed — this is not a defective battery. Charge the pack for a full 24 hours, then retest by pulling mains power; the controller should switch to backup within two seconds.

Door controller losing its programmed settings after a power outage

GEZE DCU1 units store door-speed, hold-open time, and obstacle-detection parameters in volatile memory backed by this battery. If the backup battery is fully depleted when mains drops, that memory loses power and the controller reverts to factory defaults on restart. The symptom is a door that opens too fast or too slow after an outage, or obstacle detection that behaves unexpectedly. Fit a fresh battery, charge it fully, then re-enter your door parameters via the DCU1 programming interface.

Compatible Models

106863 80100404 DCU1 DCU1-2M Slim Drive Slimdrive

Replaces Part Numbers

106863 25020 TO1013

Technical Specifications

Voltage24V
Amp Hours1500mAh
Capacity1500mAh
Rate36Wh
Net Weight509g /17.95 oz
Gross Weight579g /20.42 oz
Approximate Weight579g /20.42 oz
Dimension 98.50 x 72.60 x 29.30mm

Product Highlights

  • Brand: GEZE
  • Manufacturer: CS
  • Series: Standard
  • Color: Green
  • Product Type: Ni-MH
  • Battery Type: Ni-MH
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My GEZE automatic door stops halfway through the open cycle when the power goes out — is the battery the problem?

Yes, almost always. A partially charged or aged Ni-MH pack drops voltage sharply under the motor-start load, and the DCU1 controller cuts power to the drive before the cycle completes. This is a low-voltage cutoff, not a controller fault. Fit the new battery, charge it for 24 hours, then trigger a manual power-fail test to confirm the door completes a full open-and-close cycle before returning the door to service.

After fitting the new battery, the GEZE controller still shows a backup-fault warning light — what's wrong?

The DCU1 runs a voltage check on the backup circuit at startup. If the battery resting voltage is below the controller's acceptance threshold — typically around 22V — it logs a backup fault and keeps the warning active. This happens with a freshly installed Ni-MH pack that has not yet reached full charge. Leave the battery on charge for a full 24-hour period, then power-cycle the controller; the fault light should clear once the pack reads above 22V at rest.

The automatic door moves noticeably slower on battery backup than on mains — is something wrong with the replacement battery?

Nothing is wrong. The DCU1 firmware deliberately reduces motor drive speed during backup operation to spread the load and keep voltage above the cutoff threshold for as long as possible. You will see this on any correctly functioning backup battery, including the original GEZE pack. If the door is moving slower than usual even on mains power, that points to a separate motor or control issue — check the mains supply and controller diagnostics rather than the battery.

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