Philips JLECE2RW Emergency Light Replacement Battery 3.6V 1500mAh

ifeituo JLECE2RW — 3.6V Ni-MH Replacement Battery (DS1720-1)

This is a 3.6V 1500mAh Ni-MH replacement battery for the Philips Dynalite JLECE2RW emergency lighting unit. It slots into the existing fitting and restores backup illumination capability when mains power fails. OEM part number DS1720-1 identifies this as the correct cell for this fixture.

• JLECE2RW fitting compatibility: The JLECE2RW uses a single 3.6V Ni-MH cell managed by an onboard charge controller that expects a specific charge acceptance curve. This cell matches that voltage rail and chemistry, so the controller recognises it and enters float charge correctly after the initial conditioning cycle.
• Bench tested on actual hardware: We ran this cell through a full charge cycle and a load test simulating emergency activation. The BMS accepted the cell without fault, floated at 3.6V, and the charge indicator transitioned from red to green within the expected window.
• First test cycle after installation: Hold the test button for the full rated duration within 24 hours of fitting this cell. This confirms the cell accepts load under the charge controller and lets the controller register actual capacity before any scheduled compliance test runs against it.

Charge indicator staying red after new battery installation

A freshly fitted cell that has been in storage can arrive with a terminal voltage outside the float acceptance window of the JLECE2RW charge controller. When the controller sees a voltage below its threshold, it holds the charge LED red and continues pushing current rather than entering float. This is normal behaviour — not a fault with the cell or the fitting. Leave the unit on mains power for 24 hours and the LED will shift to green once the cell climbs into the acceptance band above 3.6V.

Emergency light dims partway through a duration test

If the light fades or dims before the rated duration is complete on the first test after replacement, the cell has not yet reached full capacity from storage conditioning. Ni-MH cells need at least one complete charge-then-discharge cycle to deliver rated capacity. Allow the unit to charge for a full 24 hours on mains, then run the test again. A cell that still dims on the second test after full charge may have a connection issue — check the solder tabs or spring contacts are making firm contact at both terminals.