Legrand BAEH ECO2 Replacement Battery 2.4V 1500mAh Ni-MH

Legrand BAEH ECO2 — 2.4V Ni-MH Replacement Battery (061089)

This is a 2.4V 1500mAh Ni-MH replacement cell for the Legrand BAEH ECO2 emergency luminaire and compatible fittings including 062614, 062624, and 062674. It restores the backup illumination function that activates automatically when mains power fails. Capacity is 1500mAh (3.6Wh), matching the original specification.

• BAEH ECO2 series compatibility: The 062614, 062624, and 062674 share the same 2.4V battery bay, charge controller circuit, and cell footprint (50.30 x 28.70 x 14.40mm) as the base BAEH ECO2 unit. One cell spec covers all four models.
• Bench tested on actual hardware: We ran the cell through a full charge cycle and a load test at the rated current draw. The BMS accepted the cell without fault and held voltage above the cutoff threshold for the rated duration.
• First test cycle after installation: Hold the test button for the full rated duration within 24 hours of fitting the new cell. This confirms the cell accepts load under real conditions and allows the charge controller to register the new capacity before any scheduled compliance test.

Emergency light failing its duration test after battery replacement

A fresh Ni-MH cell does not arrive at full capacity. Storage time and partial discharge during shipping mean the cell may hold only 60–70% of its rated 1500mAh on first activation. The charge controller in the BAEH ECO2 runs a float charge, which can take 24 hours or more to bring a depleted cell to full charge. Running a duration test before that window closes will produce a short result that does not reflect the cell's actual capacity. Allow a full 24-hour charge after installation before conducting any compliance or duration test.

Charge indicator staying red after new battery installation

The BAEH ECO2 charge controller checks incoming cell voltage before switching from fault or charge mode to the green ready state. A cell sitting at low voltage from storage — typically below 2.0V for a 2.4V Ni-MH pack — falls outside the float acceptance window and holds the indicator red. This is not a faulty cell or a faulty fitting. Leave the unit connected to mains for at least 12 hours; the controller will step through its pre-charge routine and transition to green once the cell voltage crosses the acceptance threshold, usually around 2.2V.