Kaufel 002256 Emergency Light Replacement Battery 12V 8000mAh

Kaufel 002256 / 12C5 / 002266 — 12V Ni-CD Replacement Battery (BGN7000-10EWP-A800EC)

This is a 12V, 8000mAh nickel-cadmium replacement battery for Kaufel emergency lighting units across the 002256, 12C5, and 002266 range. It slots into the existing fitting and connects to the onboard charge controller that manages float charge and mains-failure activation. Capacity is rated at 96Wh.

• 002256, 12C5, and 002266 compatibility: All three models share the same 12V NiCd cell format, connector pinout, and charge controller voltage window. The BGN7000-10EWP-A800EC meets the float voltage and capacity threshold each fitting expects for a valid charge cycle and duration test pass.
• Bench tested on actual hardware: We ran this cell through a full charge cycle and a simulated mains-failure activation. The charge controller accepted the cell without fault flags, and the BMS held load voltage through a complete duration draw at rated capacity.
• First activation after installation: Hold the test button for the full rated test duration within 24 hours of fitting this cell. This lets the charge controller register the new cell capacity before any scheduled compliance test — skipping this step can cause a false fail on the first duration check.

Charge indicator staying red after fitting a new BGN7000-10EWP-A800EC

NiCd cells stored for extended periods before sale sit at a low resting voltage — often below the float acceptance window the Kaufel charge controller uses to confirm a healthy cell. When the controller sees a voltage outside that window on first connection, it holds the fault or charging indicator red rather than transitioning to green. This is not a faulty cell or a faulty fitting. Leave the unit on mains power for 24 hours undisturbed. The controller will trickle charge the cell up through the acceptance threshold and switch the indicator to green once float voltage is reached — typically 13.5–14.4V for a 12V NiCd pack at end of charge.

Fitting still shows a fault LED after a confirmed good installation

Some Kaufel fittings latch a fault LED in hardware and do not self-clear when a new cell is connected — the fault flag was set by the previous failed cell and stays set until manually reset. On most 002256-series fittings, the reset procedure is a sustained press of the test button for 5–10 seconds with mains power present after the cell voltage has recovered above 12V. If the LED persists beyond 24 hours of charge, check the cell terminals are seated fully and measure cell voltage directly — it should read above 12.0V before attempting a reset.