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The A06B-6114-K504 is a four-cell 6V lithium battery pack serving multiple FANUC CNC and servo drive platforms. Its higher capacity (2900mAh) compared to smaller FANUC battery packs reflects the longer retention periods and broader data coverage required by the systems it supports — 18-T CNC controllers, robot controller units, and the full family of Alpha iSV and Beta iSV servo amplifiers.
The four Panasonic BR-2/3AG lithium cells connected in series provide the 6V pack voltage. Primary lithium cells offer very low self-discharge — the A06B-6114-K504 retains substantial capacity over years of storage, making shelf inventory viable for long-period deployment.
| Parameter | Value |
|---|---|
| Voltage | 6.0V |
| Capacity | 2900mAh |
| Cell Chemistry | Lithium primary (non-rechargeable) |
| Cell Type | Panasonic BR-2/3AG (× 4) |
| Weight | 0.1 kg |
| Dimensions | ~45.7mm × 35mm × 33.8mm |
| Connector | 2-pin wire leads |
| Replacement PN | A98L-0031-0025 / BR-2/3AGCT4A |
Both are FANUC 6V lithium battery packs, but they differ in capacity and physical size:
| Parameter | A06B-6093-K001 | A06B-6114-K504 |
|---|---|---|
| Capacity | 1800mAh | 2900mAh |
| Cells | 2 cells | 4 cells |
| Size | Smaller | Larger |
| Compatible systems | Beta amplifier | 18-T CNC, robot, Alpha/Beta iSV |
Always confirm which battery part number is listed in the specific drive or controller's maintenance documentation before ordering — the connectors may differ between variants.
18-T CNC parameter backup: A FANUC Series 18-T CNC control generates a low battery alarm during routine maintenance. A06B-6114-K504 is replaced — CNC parameters, PMC programme, and tool offset data are retained intact through the battery swap.
Robot controller backup after extended shutdown: A FANUC robot is powered down for an extended maintenance period. A06B-6114-K504 with its 2900mAh capacity maintains robot programme memory and mastering data throughout the shutdown — no programme reload or re-mastering required on restart.
Q1: Is A06B-6114-K504 directly interchangeable with A98L-0031-0025?
Yes — A98L-0031-0025 is FANUC's current battery specification number for the same pack. The two part numbers identify the same battery from different catalogue systems. Always confirm connector type (black or brown) matches the installed connector before ordering.
Q2: What data is lost if A06B-6114-K504 fails in a FANUC 18-T CNC?
The CNC loses RAM-stored data: system parameters, PMC ladder programme, tool offsets, and macro variable values. All must be reloaded from backup files. Maintain current backups using FANUC SRAM backup procedures — this is essential regardless of battery condition.
Q3: How long does A06B-6114-K504 last in a robot controller running 16 hours per day?
Approximately 2–4 years. The battery only drains during power-off periods (the 8 off-hours daily). Robots powered down less frequently retain battery charge longer. Replace on the controller's low battery alarm without waiting.
Q4: Can the A06B-6114-K504 be installed in a powered-on controller?
Yes — with controller power on, internal circuitry maintains RAM independently of the battery. Hot replacement is the recommended method to avoid any risk of data loss. If power-off replacement is unavoidable, complete parameter backup before starting.
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