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Omron CJ1W-BAT01 CJ Series Battery Unit for Memory Backup
SKU: CJ1W-BAT01USD 18.50
Omron CJ1W-BAT01 is a battery unit for CJ series PLCs, providing memory backup during power-off for program and data retention.
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Product Overview
CJ1W-BAT01 is an Omron accessory unit intended for memory backup support in compatible CJ-series controller architectures. Battery-backed retention is important in systems where runtime data, settings, and specific memory structures must be preserved across defined power conditions and maintenance events. This unit is commonly used in long-life machine assets where predictable startup behavior and retained operational data reduce commissioning delays after downtime. Engineering teams should verify replacement interval policy, environment conditions, and compatibility with installed CPU/module combinations. Maintenance planning should include battery health inspection, replacement scheduling, and clear records to avoid retention-related service incidents. CJ1W-BAT01 is typically selected as part of reliability-focused lifecycle management for modular PLC systems in production environments.
- SKU: CJ1W-BAT01
- Series: CJ1W
Best-Fit Applications
- Memory retention support in installed CJ controller systems
- Preventive maintenance battery replacement programs
- Lifecycle management for long-running production assets
- Service restoration workflows minimizing configuration risk
- Retrofit continuity for legacy CJ-based control panels
- Reliability planning in uptime-critical automation lines
Buying Checklist
- Confirm exact compatibility with installed CPU/controller model.
- Define replacement interval policy in maintenance documentation.
- Plan controlled replacement procedure to avoid retention issues.
- Track installation dates for predictive replacement scheduling.
- Keep spare units in stock for critical production systems.
Technical Specifications
| Model | CJ1W-BAT01 |
|---|---|
| Series | CJ1W |
| Type | Battery Unit |
| Battery Type | Lithium |
| Battery Life | 5 years at 25°C |
| Compatible CPUs | CJ1M, CJ1G, CJ1H, CJ2M, CJ2H |
| Mounting | CPU battery slot |
| Operating Temperature | 0 to +55°C |
| Storage Temperature | -20 to +70°C |
Resources & Downloads
FAQ for CJ1W-BAT01
What does this battery backup?
PLC program, I/O memory, DM area, HR area (retentive). Without battery, only program is retained in flash memory. Volatile data lost on power-off without battery.
How long does the battery last?
5 years at 25°C ambient. Shorter at higher temperatures (halve life for every 10°C above 25°C). Replace before end of life to prevent data loss.
How do I know when to replace the battery?
CPU has battery alarm output. PLC program can monitor battery status and trigger alarm. Replace when alarm activates or every 4 years as preventive maintenance.
How do I replace the battery?
Power off PLC, remove battery cover, disconnect old battery, connect new battery, replace cover. Program and data retained by capacitor for several minutes during replacement.
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