FDK CR14250SE 3.6V Lithium Battery – SL Series 1/2AA Primary Cell
When a PLC loses its memory backup power mid-production, the consequences cascade instantly: program loss, unplanned downtime, failed batch records, and costly re-commissioning. In time-critical industrial environments — from automotive assembly lines to pharmaceutical filling systems — a single depleted battery can halt an entire facility. The FDK CR14250SE exists precisely to prevent this scenario, delivering ultra-reliable, long-life power to the memory and real-time clock circuits that keep your control systems running without interruption.
The CR14250SE occupies a critical niche within FDK’s SL Series of lithium thionyl chloride (Li-SOCl₂) primary cells. As a 1/2AA-format cell rated at 3.6V, it is the de facto standard backup battery for Mitsubishi MELSEC, Omron CJ/CS/NJ series, Fanuc CNC controllers, and dozens of other industrial platforms. FDK — a Fujitsu Group company — has supplied this cell to global OEMs for over three decades, making the CR14250SE one of the most trusted industrial backup batteries in the world.
Technical Specifications
- Model / SKU: CR14250SE
- Manufacturer: FDK Corporation (Fujitsu Group)
- Series: SL Series (Li-SOCl₂ Primary)
- Nominal Voltage: 3.6 V
- Nominal Capacity: 850 mAh
- Size Format: 1/2AA (IEC: CR14250)
- Dimensions: Ø14.5 mm × 25.0 mm
- Operating Temperature: -40°C to +85°C
- Storage Temperature: -40°C to +85°C
- Self-Discharge Rate: <1% per year (at 23°C)
- Shelf Life: 10 years (sealed, stored at room temperature)
- Terminal Type: Solder tabs (SE suffix = with solder tabs)
- Chemistry: Lithium Thionyl Chloride (Li-SOCl₂)
- Compliance: RoHS compliant; UL recognized
Key Features & Benefits
- Ultra-Low Self-Discharge: Retains >99% capacity annually, ensuring reliable backup even after years of standby service.
- Wide Temperature Range: Operates from -40°C to +85°C — suitable for outdoor cabinets, cold-storage facilities, and high-heat enclosures.
- High Energy Density: 850 mAh in a compact 1/2AA form factor delivers maximum runtime in space-constrained controller slots.
- Solder Tab Terminals (SE): The SE suffix designates factory-fitted solder tabs for secure PCB mounting, eliminating contact resistance issues common with clip-type holders.
- Stable Flat Discharge Curve: Maintains near-constant voltage throughout discharge, protecting sensitive CMOS memory circuits from voltage-drop errors.
- Proven OEM Pedigree: Specified by Mitsubishi Electric, Omron, Fanuc, and other Tier-1 automation OEMs as the approved replacement cell.
Industry & Equipment Applications
- PLC Memory Backup: Mitsubishi MELSEC Q/L/FX series, Omron CJ1M/CS1/NJ series, Siemens S7 (via adapter), Allen-Bradley MicroLogix
- CNC Controllers: Fanuc 0i/16i/18i/21i series SRAM backup
- DCS Systems: Yokogawa CENTUM VP, Honeywell Experion field controllers
- Industrial Robots: Fanuc R-30iA/R-30iB controller memory retention
- SCADA & RTU Devices: Real-time clock and parameter backup in remote terminal units
- Medical Equipment: Infusion pump and patient monitor parameter retention
- Smart Meters & IoT Gateways: Long-life primary power for low-drain embedded systems
System Integration & Compatible Parts
The CR14250SE is the direct OEM-specified replacement for the following controller battery slots:
- Mitsubishi Q6BAT, Q7BAT (MELSEC Q Series CPU backup)
- Omron CJ1W-BAT01 battery unit
- Fanuc A98L-0031-0012 (CNC SRAM backup)
- Yaskawa JZRCR-YPP01-1 (robot controller backup)
- Compatible with standard 1/2AA battery holders: Keystone 2460, MPD BH1/2AA-G
For systems requiring the non-tab version, see: FDK CR14250E. For higher-capacity 2/3AA format, see: FDK CR17335SE.
Our Quality Assurance Process
- Authentic Sourcing: All FDK batteries are sourced directly from authorized distributors with full traceability to FDK Corporation Japan.
- Batch Verification: Each shipment is verified against FDK’s date code and lot number system to confirm freshness and authenticity.
- Storage Compliance: Stored in climate-controlled warehouses at 15–25°C, away from direct sunlight and electromagnetic interference.
- Pre-Shipment Inspection: Open-circuit voltage (OCV) spot-checked on every batch before dispatch.
- Documentation: Certificate of Conformance (CoC) and Safety Data Sheet (SDS) available upon request.
How to Order
- Submit an inquiry via the Contact Us form or email support@konmask.com.
- Provide your required quantity, destination country, and any specific packaging or documentation requirements.
- Receive a formal quotation within 1 business day (MOQ: 1 piece; bulk pricing available for 100+ units).
- Confirm order and arrange payment via T/T, PayPal, or other agreed methods.
- Shipment via DHL / FedEx / UPS with full tracking; lead time typically 3–7 business days.
Why Choose Konmask.com?
- ✅ Genuine Parts Only — No counterfeits, no grey-market stock.
- ✅ B2B Specialist — Serving MRO buyers, system integrators, and OEM procurement teams globally.
- ✅ Technical Support — Our engineers can confirm compatibility before you order.
- ✅ Flexible MOQ — Single-piece samples to full pallet quantities.
- ✅ Export Documentation — Commercial invoice, packing list, CoC, and SDS provided as standard.
- ✅ Fast Global Shipping — DHL/FedEx express from China to 150+ countries.
Frequently Asked Questions
Q: What does the “SE” suffix mean on CR14250SE?
A: The “SE” suffix indicates the cell is fitted with solder tabs (also called solder lugs), allowing direct PCB soldering. The standard CR14250E has no tabs and is designed for use in battery holders.
Q: Is the CR14250SE compatible with Mitsubishi Q6BAT?
A: Yes. The CR14250SE is the internal cell used in the Mitsubishi Q6BAT battery unit and is the correct replacement when the Q6BAT housing is reused.
Q: How do I know when to replace the battery in my PLC?
A: Most PLCs display a BAT alarm or LED indicator when battery voltage drops below threshold (typically ~3.0V). FDK recommends proactive replacement every 5 years regardless of alarm status.
Q: Can I ship lithium batteries internationally?
A: Yes. The CR14250SE is a primary lithium cell classified under UN3090. Konmask.com handles all IATA/IMDG compliant packaging and documentation for international shipments.
Q: What is the minimum order quantity?
A: MOQ is 1 piece. Volume discounts apply at 10, 50, and 100+ units. Contact us for a tiered pricing quote.
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