About this replacement
Kaufel 850.0014 — 6V Ni-CD Replacement Battery (BGN1800-5DWP-A800EC)
This is a 6V, 2000mAh Ni-CD battery for the Kaufel 850.0014 emergency lighting unit. It restores full function to emergency exit signs and backup lighting systems that have lost capacity due to cell degradation. Voltage and capacity match the original cell exactly — 6V, 2000mAh (12Wh).
- 850.0014 fitting compatibility: The 850.0014 uses a dedicated charge controller tuned to Ni-CD float voltage. This cell matches the required 6V nominal rail and the charge acceptance curve that controller expects — a lithium or NiMH substitute would cause incorrect charge termination and potential overcharge damage.
- Bench tested on actual hardware: We ran this cell through a full charge cycle and load test on the 850.0014 platform. The charge controller accepted the cell without fault, current draw tracked within spec, and the BMS registered full capacity before cutoff.
- First test cycle after installation: Within 24 hours of fitting, hold the test button for the full rated duration. This forces a genuine load cycle, lets the charge controller register the new cell, and confirms the battery can sustain output before your next scheduled compliance inspection.
Emergency light failing its duration test after battery replacement
A freshly installed Ni-CD cell ships in a partially discharged state after months in storage. The 850.0014 charge controller tops the cell up on float charge, but one float cycle alone rarely brings the cell to full rated capacity. Without a deliberate load cycle, the cell cannot deliver its full 2000mAh during a timed duration test. Run a manual test within 24 hours of installation — a full discharge and recharge conditions the cell and allows rated capacity to develop properly.
Charge indicator staying red after new battery installation
The 850.0014 charge controller checks cell voltage before accepting a new battery into its float window. A cell that has sat in storage can drop below the controller's minimum acceptance threshold, which holds the fault or charging LED on red. Leave the fitting powered for 12–24 hours — the controller trickle-charges the cell until voltage climbs into the acceptance window, then transitions to green. If the LED remains red beyond 24 hours, measure across the battery terminals; voltage should read above 5.4V at that point.