Lithonia ENB06006 Emergency Light Replacement Battery 6V 2000mAh

Lithonia ENB06006 — 6V Ni-MH Replacement Battery (NIC0099)

This is a 6V 2000mAh (12Wh) Ni-MH replacement battery for Lithonia emergency lighting units using part number ENB06006. It fits the backup power compartment in emergency exit signs and emergency lighting fixtures that rely on this cell to activate during a mains failure. Capacity figures are taken directly from product data, not estimated.

• ENB06006 fixture compatibility: Lithonia fixtures using ENB06006 run a 6V Ni-MH cell because the charge controller floats at a voltage rail matched to nickel-metal hydride chemistry. Swapping to a different chemistry — Li-ion or Ni-Cd — trips the charge circuit and prevents proper float maintenance.
• Bench tested on actual hardware: We ran this cell through a full charge cycle and simulated a mains-loss event. The BMS accepted the load without cutoff, and the fixture lamp activated at the expected output level without hesitation.
• First-cycle conditioning on installation: After fitting, hold the manual test button for the full rated duration within 24 hours. This confirms the cell accepts load and lets the charge controller register the new cell's capacity before any scheduled compliance test.

Charge indicator staying red after fitting a new ENB06006 cell

A new cell shipped from storage often sits below the float acceptance window the charge controller expects to see. When the controller reads a resting voltage outside that window, it holds the charge LED red and does not transition to green. This is not a fault with the cell — it is the controller waiting for the cell voltage to climb into the float range. Leave the fixture on mains power for a full 24-hour charge cycle. If the LED has not turned green after 24 hours, check that the connector is fully seated and that cell voltage at the terminals reads at least 6.0V.

Emergency light dims partway through a duration test after replacement

A cell that has not completed its first full conditioning cycle will deliver less usable capacity than rated. During a duration test, the lamp starts at normal brightness and then dims or cuts out before the rated period ends. The cell is not defective — it has not yet reached its full charge state from storage. Allow the fixture to remain on continuous mains charge for 24 hours, then run the test again. Full rated capacity typically stabilises after one or two complete charge-and-discharge cycles.