About this replacement
Beghelli 415.067.101 Series — 3.6V Ni-Cd Replacement Battery (300117-20)
This is a 3.6V, 2000mAh Ni-Cd rechargeable cell for Beghelli emergency lighting units 415.067.101, 415067101, and 415213000. It powers the backup illumination circuit during mains failure, keeping evacuation routes lit for the duration required by code. Voltage, capacity, and connector match the original factory specification.
- 415.067.101 and 415213000 compatibility: Both fittings share the same 3.6V charge rail and connector pinout. The charge controller in each unit is calibrated to float a single Ni-Cd cell at this voltage, so no wiring modification or adapter is needed.
- Bench tested on actual hardware: We cycled this cell through a full charge and a load discharge on the bench. The BMS accepted the cell without fault, the charge indicator transitioned from red to green within the expected window, and the cell held voltage through the discharge phase without dropping below the cutoff threshold.
- First-cycle activation on Ni-Cd cells: Ni-Cd cells from storage may not deliver full rated capacity on the first discharge. Hold the test button for the full rated duration within 24 hours of installation. This lets the charge controller register the new cell and conditions it before your next scheduled compliance test.
Emergency light failing its duration test after battery replacement
A freshly installed Ni-Cd cell that has been in storage for months may have a partial charge and a suppressed capacity on its first cycle. During a duration test, the cell can drop to cutoff voltage before the rated period ends — not because the battery is faulty, but because it has not completed a conditioning cycle. Run one full charge followed by a manual test cycle before submitting the fitting to a compliance inspection. After that first cycle, rated capacity restores and the unit should hold voltage above 3.0V through the full test period.
Charge indicator staying red after new battery installation
Ni-Cd cells discharged during long storage can present a resting voltage outside the float acceptance window the charge controller expects at startup. The controller reads this as a fault and holds the red indicator rather than beginning the charge cycle. Leave the fitting on mains power for at least two hours — most Beghelli controllers will attempt a recovery charge pulse and then transition to normal charging once the cell voltage climbs above the acceptance threshold. If the indicator remains red after four hours, confirm the cell polarity and connector seating before drawing any other conclusions.