Tiga IL800 6V Emergency Light Replacement Battery 4000mAh

Tiga IL800 / IL600 / IL60 — 6V Ni-CD Replacement Battery (30059216.00)

This is a 6V 4000mAh nickel-cadmium battery for Tiga IL800, IL600, and IL60 emergency lighting units. It replaces OEM part 30059216.00. The cell restores backup illumination function when the original battery has depleted or failed capacity testing.

• IL800, IL600, and IL60 platform fit: These three Tiga units share the same 6V cell format, connector orientation, and charge controller float voltage. One cell covers all three models without any wiring modification.
• Bench tested on actual hardware: We ran this cell through a full discharge-recharge cycle on the IL800 charge controller. The BMS accepted the cell within the float window and the charge indicator transitioned to green within the expected window after a full conditioning cycle.
• Post-installation test cycle: 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 a scheduled compliance test — skipping this step is the most common reason a freshly replaced cell fails a duration test.

Emergency light failing its duration test after battery replacement

A new Ni-CD cell ships at partial charge — typically 40–60% of rated capacity — after months in storage. The IL800 charge controller begins topping the cell from whatever state it arrives in, but this process takes time. If a compliance test runs before the cell has completed at least one full charge-discharge cycle, the unit will cut out early. Run the manual test within 24 hours of installation to condition the cell, then allow a full 24-hour recharge before any formal duration test.

Charge indicator staying red after confirmed good installation

If the charge LED stays red after fitting a known-good cell, the controller's float acceptance window is the likely cause. Ni-CD cells that have self-discharged deeply in storage can present a resting voltage below the controller's minimum acceptance threshold — some Tiga charge circuits will not begin normal float charging until the cell voltage climbs above approximately 5.4V. Leave the fitting connected to mains for 12–24 hours without triggering a test. If the LED has not shifted to green after 24 hours, confirm cell polarity and connector seating before investigating the controller itself.