Prescolite E1875-01-00 6V Replacement Battery 2000mAh Ni-MH

Prescolite E1875-01-00 / E82082100 / ENB06006 — 6V Ni-MH Replacement Battery

This is a 6V 2000mAh (12Wh) Ni-MH cell for Prescolite emergency lighting units, covering models E1875-01-00, E82082100, and ENB06006. These fittings power exit signs and evacuation lighting when mains supply fails. Swap this cell when the original no longer holds charge or the fitting flags a battery fault.

• E1875-01-00 / E82082100 / ENB06006 compatibility: All three models run the same 6V battery rail with matching connector pinout and physical footprint — 52.38 × 43.46 × 27.20mm. The charge controller in each fitting expects a Ni-MH cell at this voltage; swapping in a different chemistry will cause false fault signals or overcharge damage.
• Bench tested on actual hardware: We cycled this cell through a full mains-failure simulation. The BMS accepted charge normally, the float voltage settled within spec, and the fitting cleared its fault LED after one complete charge cycle.
• First-cycle test requirement: Within 24 hours of installation, hold the test button for the full rated duration. A cell shipped from storage will not yet be at rated capacity — this forced discharge-recharge cycle lets the charge controller register the new cell and prevents a false fail on the next scheduled compliance test.

Charge indicator staying red after new battery installation

A cell in storage self-discharges, and by the time it arrives the resting voltage may sit below the charge controller's float acceptance window. Some Prescolite fittings interpret this low entry voltage as a fault rather than a depleted cell, so the red LED stays on even after correct installation. Leave the fitting on mains power for a full 24-hour charge cycle before judging the indicator. If the LED has not shifted to green after 24 hours, measure the cell voltage directly — a healthy Ni-MH cell at 6V nominal should read at least 6.0V fully charged under no load.

Emergency light dims and cuts short during a duration test

This happens when the cell has not completed its first full conditioning charge before the test is triggered. A partially charged Ni-MH cell delivers full brightness briefly, then sags as internal resistance limits current delivery. The fitting reads this as low battery and dims or cuts off early — this is not a faulty cell. Allow the full 24-hour initial charge, then re-run the test. The cell should then sustain full output through the rated duration without dimming.