Van Lien 3D2.0HT Emergency Light Replacement Battery 3.6V 2400mAh

Van Lien 3D2.0HT Series — 3.6V Ni-CD Replacement Battery (1400620000)

This is a 3.6V, 2400mAh nickel-cadmium cell for the Van Lien 3D2.0HT emergency lighting unit. It also fits models 801861, 1190011V, and NV233N. When mains power fails, this cell powers the fitting through its rated discharge cycle to meet emergency lighting compliance requirements.

• 3D2.0HT, 801861, 1190011V, NV233N compatibility: These fittings share the same charge controller circuit, float voltage threshold, and cell footprint. The Van Lien charge board expects a 3.6V Ni-CD cell at this exact capacity — swapping to a different chemistry or voltage will cause a permanent charge fault.
• Bench tested on actual hardware: We ran this cell through a full charge-discharge cycle on a 3D2.0HT unit. The charge controller accepted the cell without fault, the BMS reached float correctly, and the fitting activated cleanly on a simulated mains failure.
• 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 and allows the cell to reach its actual capacity before your next scheduled compliance test. A new Ni-CD cell that has not completed one full discharge cycle will underperform on a duration test.

Emergency light failing its duration test after battery replacement

A freshly installed Ni-CD cell arrives from storage with a partial charge and an unformed capacity profile. The charge controller in the 3D2.0HT does not run a conditioning cycle automatically — it just tops the cell up to float. Until the cell has completed at least one full discharge under load, it will not deliver its rated 2400mAh. Run one complete manual test cycle immediately after installation, before the fitting goes back into a compliance schedule.

Charge indicator staying red after new battery installation

The charge LED stays red when the controller cannot bring cell voltage into its float acceptance window. Cells stored for extended periods can sit at a low resting voltage that the controller reads as a fault rather than a charge state. Leave the fitting powered on for 12–16 hours after installation — most Van Lien controllers will pull the cell up to float within that window and switch to green. If the LED is still red at 24 hours, check the cell resting voltage with a multimeter: it should read above 3.2V.