ORBIK B164/24 2X4 Emergency Light Replacement Battery 2.4V 8000mAh

ORBIK B164/24 2X4 — 2.4V Ni-MH Replacement Battery

This is a 2.4V, 8000mAh Ni-MH replacement cell for the ORBIK B164/24 2X4 emergency lighting unit. It restores backup illumination function when the original cell has aged past its useful capacity. Dimensions are 121.10 × 33.65 × 33.00mm — confirm these against your fitting before ordering.

• ORBIK B164/24 2X4 compatibility: The B164/24 2X4 runs a 2.4V charge rail with a trickle-maintenance controller. This cell matches that voltage window and physical format so the charge circuit operates within its intended float range without modification.
• Bench tested on actual hardware: We ran this cell through a simulated mains-fail activation. The BMS accepted charge without thermal event, and load voltage held above the controller's low-voltage cutoff threshold for the rated duration test window.
• First installation test cycle: Hold the test button for the full rated duration within 24 hours of fitting. This lets the charge controller register the new cell's capacity and confirms the cell accepts load before your next scheduled compliance inspection.

Charge indicator staying red after fitting the new cell

A prolonged storage period can leave the cell voltage sitting outside the charge controller's float acceptance window. The controller reads that as a fault condition and holds the red LED rather than switching to green. Leave the fitting on mains power for a full 24-hour conditioning charge. Once the cell climbs into the controller's acceptance band — typically above 2.2V under float — the indicator should transition to green normally.

Emergency light dims partway through a duration test after replacement

A cell replaced without a prior full conditioning charge will not deliver its rated 8000mAh on the first activation. The controller has not yet completed a full charge cycle, so usable capacity is lower than the cell's true rating. This is not a fault with the cell itself — it resolves after one complete 24-hour charge followed by a fresh test. Run a second full duration test after that charge cycle to confirm the fitting meets its compliance requirement.