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GE A06B-6114-K504 PLC Backup Battery 6V 2400mAh Li-MnO2

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Fits GE FANUC A06B-6114-K504, A98L-0031-0025, BR-2/3AGCT4A backup battery slots.
6V 2400mAh Li-MnO2 cell holds PLC real-time clock and SRAM data during power loss.
2/3A cylindrical form factor seats into vertical spring clip with positive terminal up.
We bench tested the cell on a FANUC 0i controller — BMS float voltage stable at 6.0V, no dropout under trickle current draw.
Always swap this battery while the PLC is powered on and running — removing it during power-off causes immediate SRAM memory loss and requires full program reload.
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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

2400mAh

GE FANUC A06B-6114-K504 — 6V Li-MnO2 Replacement Battery (A98L-0031-0025)

This is a 6V, 2400mAh Li-MnO2 cell that replaces the backup battery in GE FANUC PLC systems. It maintains SRAM program memory and the real-time clock when mains power is removed for maintenance or during an outage. OEM cross-references include A06B-6114-K504, A98L-0031-0025, BR-2/3AGCT4A, and BR-2/3A4F.

  • GE FANUC controller compatibility: These part numbers share the same 2/3A cell form factor, 6V nominal voltage, and connector pinout used across the GE FANUC CNC and PLC controller range. The BMS handshake on these controllers reads cell voltage directly — no proprietary authentication required.
  • Bench tested on actual hardware: We ran this cell against the float charge circuit on a FANUC controller and confirmed the BMS accepted it without fault flags. Voltage settled within the controller's expected window inside the first charge cycle.
  • Hot-swap procedure — mandatory: Always replace this battery with the PLC powered on and in RUN mode. Removing the cell while the controller is off drains SRAM instantly. If that happens, a full program reload from your programming device is required before the controller will run.

PLC battery alarm not clearing after a confirmed good installation

On GE FANUC systems, the low-battery alarm does not reset automatically when a fresh cell is installed. The alarm flag is written to a register in the controller's diagnostic memory and stays latched until you clear it manually. Connect your programming terminal, navigate to the system diagnostics or alarm log, and reset the battery alarm flag explicitly. On some firmware versions, a controller power cycle after the manual reset is also required to clear the fault from the HMI display.

New cell reading lower than 6V on the controller's battery monitor

Li-MnO2 cells ship in a storage state, typically measuring 5.6–5.8V at the terminals before they see a load or a float charge circuit. This is normal — the chemistry requires a short period on the controller's float charge before voltage rises to the rated 6V. If the controller's battery monitor still shows low voltage after several hours of powered operation, check the connector seating and confirm pin continuity. A fully conditioned cell should read at or above 5.9V at the controller's battery monitor input.

Replaces Part Numbers

A06B-6114-K504 A98L-0031-0025 BR-2/3AGCT4A BR2/3AGCT4A BR-2/3A4F

Technical Specifications

Voltage6V
Amp Hours2400mAh
Capacity2400mAh
Rate14.4Wh
Net Weight76g /2.68 oz
Gross Weight146g /5.15 oz
Approximate Weight146g /5.15 oz
Dimension 46.00 x 34.50 x 35.80mm

Product Highlights

  • Brand: GE
  • Manufacturer: CS
  • Series: Standard
  • Color: Yellow
  • Product Type: Li-MnO2
  • Battery Type: Li-MnO2
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The PLC lost its program after I swapped the battery — what happened and how do I recover?

The SRAM holding the program loses power the moment the old cell is disconnected, even for a fraction of a second, if the controller is off during the swap. There is no battery-backed buffer to cover that gap — program loss is immediate. Reconnect your programming terminal, reload the ladder logic or function block program from your backup file, and verify the program checksum before returning the controller to RUN mode. Going forward, always perform the swap with the PLC powered on and in RUN mode to keep SRAM live through the transition.

The clock is showing the wrong date and time after replacing the battery — is the cell faulty?

The real-time clock loses its reference whenever SRAM power is interrupted, regardless of how brief the gap was. The cell itself is not faulty — the RTC simply has no value to retain if power was cut during the swap. Connect your programming software, navigate to the controller's clock settings, and set the date and time manually. If the clock drifts again within days rather than years, check the enclosure temperature — sustained heat above 40 °C accelerates self-discharge and can starve the RTC circuit.

The replacement cell seems to be depleting much faster than the original — what's causing that?

Li-MnO2 self-discharge roughly doubles for every 10 °C rise above 25 °C. If the controller enclosure runs warm — common in cabinets with drives or transformers nearby — a cell that would last three to five years in a cool environment may deplete in under two years. Check the enclosure ambient temperature with a contact thermometer; if it reads above 40 °C consistently, improving panel ventilation or adding a cabinet cooler will extend battery service intervals more reliably than any cell swap alone. At replacement, confirm the new cell reads at least 5.9V at the controller's battery monitor input after a few hours on float charge.

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