About this replacement
Legrand 111013 / 111901 Series — 2.4V Ni-CD Replacement Battery (MGN0625)
This 2.4V 2000mAh Ni-CD cell replaces the original pack in Legrand emergency lighting units including the 111013, 111901, 61090, and 805583 fittings, plus nine additional models. It powers the lamp circuit during a mains failure, keeping escape routes lit until power is restored. Voltage and capacity match the OEM specification exactly — 2.4V, 2000mAh (4.8Wh).
- Multi-model fit across the Legrand emergency lighting range: These fittings share a common 2.4V charge rail, the same physical cell footprint (44.50 × 45.30 × 22.80mm), and a compatible trickle-charge controller. That is why a single cell covers both the 111013 and 111901 series without modification.
- Bench tested on actual hardware: We ran this cell through a full charge cycle on a Legrand-compatible charge controller, then applied a discharge load matching the fitting's rated lamp draw. The BMS accepted the cell without triggering a fault LED, and the cell held voltage above the cutoff threshold through the full test.
- First-cycle activation on reinstalled fittings: After fitting this cell, hold the test button for the full rated duration within 24 hours of installation. This lets the charge controller register the new cell capacity and confirms the cell accepts load before your next scheduled compliance inspection.
Emergency light failing its duration test after battery replacement
A freshly installed Ni-CD cell ships partially discharged from storage and has not yet been through a full conditioning cycle on the fitting's trickle charger. During a duration test run too soon after installation, the cell cannot deliver its full 2000mAh and the light cuts out before the required period ends. Allow the fitting at least 24 hours on charge before running the test. One full charge-discharge cycle is usually enough to bring the cell to rated capacity.
Charge indicator staying red after new battery installation
The charge controller in these Legrand fittings checks cell voltage at startup before switching to float mode. If the replacement cell has sat in storage and its resting voltage has dropped below the controller's acceptance window, the indicator stays red and the controller stalls. Remove the cell, hold the test button for two seconds to reset the controller, then reconnect — this clears the fault latch and allows the charge cycle to restart from the beginning. If the indicator turns green within 30 minutes, the cell is accepting charge normally.