Philips Bodine PCF14004 3.6V Compatible Battery 40000009

Philips Bodine PCF14004 — 3.6V Ni-CD Replacement Battery (40000009)

This is a 3.6V, 4000mAh Ni-CD replacement battery for the Philips Bodine PCF14004 emergency lighting unit. It replaces OEM part 40000009 and restores the unit's ability to activate backup illumination during a mains failure. Capacity is 14.4Wh — matched to the original specification.

• PCF14004 compatibility: The PCF14004 uses a dedicated charge controller tuned to Ni-CD float voltage. This cell matches the original 3.6V nominal rating, so the controller charges at the correct rate without triggering a fault state or overcharging the cell.
• Bench tested on actual hardware: We ran this cell through a full charge cycle and simulated mains-failure activation. The charge controller reached float stage without fault, and the cell voltage held above the BMS low-voltage cutoff threshold throughout the load test.
• First-cycle conditioning on the PCF14004: After installation, hold the test button for the unit's full rated test duration within 24 hours. This lets the charge controller register the new cell capacity and prevents a false fail on your next scheduled compliance test.

Charge indicator staying red after fitting the new cell

The PCF14004's charge controller checks incoming cell voltage before accepting it into the float charge window. A new Ni-CD cell that has sat in storage can arrive with a resting voltage low enough to sit outside that acceptance range. The controller interprets this as a fault and holds the red indicator rather than switching to green. Leave the unit on mains for 24–48 hours — the trickle charge stage will bring the cell up to a voltage the controller accepts, typically above 3.4V resting.

Emergency light dims partway through a duration test

Dimming during a test run points to the cell not yet holding its full 4000mAh charge on the first activation. A freshly installed Ni-CD cell needs at least one complete charge-discharge cycle before it reaches rated capacity — this is normal cell behaviour, not a fault. Run the unit on mains charge for a full 24 hours before performing the duration test. If dimming persists after a second full charge cycle, check the cell connection contacts for oxidation and confirm terminal voltage under load stays above 3.0V.