Eaton LUM16032 Replacement Battery 19.2V 2000mAh Ni-CD

Eaton LUM16032 / ULTRALED 2000 ES — 19.2V Ni-CD Replacement Battery (16KR-SCH)

This is a 19.2V, 2000mAh nickel-cadmium replacement battery for the Eaton LUM16032 and ULTRALED 2000 ES emergency lighting units. It replaces OEM part numbers 16KR-SCH and 805881. The battery restores backup illumination capability in commercial and industrial emergency lighting fixtures where the original cell has aged or failed.

• LUM16032 and ULTRALED 2000 ES compatibility: Both units share the same 19.2V cell pack format, connector configuration, and charge controller float voltage. The same physical cell fits both housings without modification.
• Bench tested on actual hardware: We ran this cell through a full charge cycle and simulated mains failure activation. The BMS accepted the load immediately and the charge controller moved to float within the expected window.
• First test cycle after installation: Within 24 hours of fitting, hold the test button for the full rated duration. This lets the charge controller register the new cell capacity before the unit's next scheduled compliance test. Skipping this step can cause the unit to log a false duration failure on its first automated test.

Charge indicator staying red after new battery installation

A new Ni-CD cell shipped from storage typically sits at a lower resting voltage than the float threshold the LUM16032's charge controller expects to see. When the controller reads that lower voltage, it stays in fast-charge or fault mode rather than switching to green. This is not a faulty cell or faulty fitting. Leave the unit on mains power for 24 hours. The controller will complete its charge cycle and the indicator should move to green once cell voltage reaches the float acceptance window of approximately 22–24V open circuit.

Emergency light failing its duration test after battery replacement

A freshly installed Ni-CD cell has not yet reached its rated capacity — storage and shipping partially discharge the cell and suppress its capacity until it completes at least one full charge-discharge cycle. If a compliance test runs before that conditioning cycle is complete, the unit will cut out before the rated duration. Perform a manual test cycle immediately after installation: charge for 24 hours, then run a full duration test by holding the test button. After that single cycle, the cell delivers its rated 2000mAh and the unit should pass its next scheduled compliance test.