Deko-Light ALMAAZ Emergency Luminaire Compatible Battery 3.2V 1800mAh

Deko-Light Ceiling Luminaire ALMAAZ Emergency Luminaire — 3.2V LiFePO4 Replacement Battery (DKL-930634)

This 3.2V 1800mAh LiFePO4 cell replaces the original backup battery in the Deko-Light ALMAAZ emergency ceiling luminaire. It fits directly into the luminaire's battery bay and connects to the onboard charge controller. Capacity is 1800mAh (5.76Wh), matching the original specification.

• ALMAAZ luminaire compatibility: The ALMAAZ series uses a single LiFePO4 cell at 3.2V nominal. The charge controller is calibrated for LiFePO4 float voltage — substituting a NiMH or Li-ion cell of similar physical size will trigger a persistent fault condition because the float thresholds do not match.
• Bench tested on actual hardware: We cycled this cell through a simulated mains-failure activation on compatible emergency lighting hardware. The BMS held load without voltage sag below the luminaire's cutoff threshold, and the charge controller transitioned from bulk charge to float without faults.
• First-cycle test requirement: Within 24 hours of installation, hold the luminaire's test button for the full rated duration. This allows the charge controller to register the new cell's capacity baseline before your next scheduled compliance inspection — skipping this step can cause a false fail on the duration test.

Charge indicator staying red after new battery installation

A LiFePO4 cell stored at low state of charge can sit below the charge controller's float acceptance window — typically under 2.8V resting. When the controller sees a cell voltage in that range, it holds the fault/red state rather than entering bulk charge. The fix is to apply a short conditioning charge using a compatible external LiFePO4 charger set to 3.2V before installing the cell. Once resting voltage reaches approximately 3.0V, reinstall the cell and the controller should accept it and transition to bulk charge within a few minutes.

Emergency light dims after a few minutes during a duration test

Dimming partway through a test means cell voltage is dropping faster than rated — the luminaire's driver throttles output to stay within its input voltage window. On a freshly installed cell, this almost always means the cell has not completed its first full charge cycle from storage. A new LiFePO4 cell needs at least one complete charge-to-float cycle before it delivers full capacity under load. Allow the luminaire 24 hours on mains power after installation, then re-run the duration test. If dimming persists after a confirmed full charge, check the resting voltage — it should sit between 3.2V and 3.3V before the test begins.