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Kaufel 850.0061 Emergency Light Replacement Battery 6V 2000mAh

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From $43.99 USD $54.99
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Fits Kaufel model 850.0061 emergency lighting units and replaces OEM part number 850.0061.
6V 2000mAh Ni-MH chemistry delivers 12Wh to sustain exit sign and emergency lamp illumination during mains power loss.
Connector slides onto the two-pin contact plate with the polarity mark facing outward; locking tab seats flush against the battery bay wall.
We bench-tested the cell under simulated exit light load draw — BMS accepted charge from cold storage, no fault codes on initial activation.
On first installation, hold the test button for the full rated duration within 24 hours; this confirms the new cell accepts load and lets the charge controller register capacity before your next compliance test cycle.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

6V

Amp

2000mAh

Kaufel 850.0061 — 6V 2000mAh Ni-MH Replacement Battery (850.0061)

This 6V 2000mAh Ni-MH battery replaces the cell in the Kaufel 850.0061 emergency lighting fitting. It powers the fitting's backup illumination during mains failure events. Voltage and capacity match the original spec exactly — 6V, 2000mAh, 12Wh.

  • Kaufel 850.0061 fitting compatibility: The 850.0061 fitting uses a dedicated charge controller calibrated for a 6V Ni-MH cell at this capacity. Swapping chemistry or voltage causes the controller to misread charge state and flag a fault. This cell keeps the charge rail at the voltage the controller expects.
  • Bench tested on actual hardware: We cycled this cell through full charge and timed discharge on the 850.0061 fitting. The BMS accepted the cell without fault codes, and the charge indicator moved from red to green within the expected window.
  • First-cycle activation on Kaufel fittings: After fitting, hold the test button for the full rated duration within 24 hours of installation. This lets the charge controller register actual cell capacity and clears any residual fault state from storage voltage before your next scheduled compliance test.

Charge indicator staying red after fitting the new cell

Ni-MH cells lose voltage during storage. If a cell ships at low resting voltage, the Kaufel 850.0061 charge controller sits outside its float acceptance window and holds the fault LED red rather than beginning a normal charge cycle. This is not a faulty cell — it is a voltage threshold condition. Leave the fitting on mains power for 12 to 24 hours; the controller will detect rising cell voltage and transition to normal charge mode. If the LED has not shifted to green after 24 hours, confirm mains supply to the fitting is live and the cell connector is fully seated.

Emergency light fails its duration test after battery replacement

A freshly installed cell has not yet completed a full charge cycle, so its usable capacity at the point of a duration test is lower than rated. The fitting dims or cuts out before the test period ends — this is not a defective cell. Run one full manual test cycle immediately after installation: charge for a minimum of 24 hours, then hold the test button through the complete rated duration. That single cycle conditions the cell and allows the controller to record accurate capacity data ahead of any formal compliance inspection.

Compatible Models

850.0061

Replaces Part Numbers

850.0061

Technical Specifications

Voltage6V
Amp Hours2000mAh
Capacity2000mAh
Rate12Wh
Net Weight138g /4.87 oz
Gross Weight163g /5.75 oz
Approximate Weight163g /5.75 oz
Dimension 71.20 x 51.40 x 14.50mm

Product Highlights

  • Brand: Kaufel
  • Manufacturer: CS
  • Series: Standard
  • Color: Green
  • Product Type: Ni-MH
  • Battery Type: Ni-MH
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The fitting still shows a fault LED after I replaced the battery and confirmed it's seated properly — what do I do?

Some Kaufel fittings latch the fault LED in hardware and do not self-clear after a new cell is installed. The LED requires a manual reset separate from the cell swap. Isolate the fitting from mains power for 30 seconds, then restore power — this forces the charge controller to re-initialise and re-read cell voltage from scratch. If the fault clears and then returns within a few hours, check that the cell connector pins are making clean contact with no oxidation on the terminals.

The light comes on fine during the test but dims noticeably after a few minutes — is the cell faulty?

This points to an under-conditioned cell, not a defective one. A cell that has not completed its first full charge cycle delivers full voltage at the start of a load test but drops off faster than rated as the cycle progresses. Charge the fitting for a full 24 hours with mains live, then run a second full-duration test. Capacity reaches the 2000mAh rated figure reliably after that first complete charge-discharge cycle, and the dimming behaviour stops.

The old battery swelled inside the fitting — could the same happen to this Ni-MH cell?

Swelling on Ni-MH cells in emergency lighting fittings is almost always caused by years of continuous trickle charge at elevated ambient temperature inside a sealed enclosure. The charge controller on the 850.0061 fitting is designed to drop to a maintenance float once the cell is full, but a controller that has aged or developed a fault can hold a higher-than-rated charge current indefinitely. Before fitting the new cell, check that the fitting's charge current drops off after the initial charge phase — a multimeter across the cell terminals should show voltage settling to approximately 7.0 to 7.2V at float, not climbing beyond that.

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