Overview
The Tadiran TL-2100/S is a high-performance lithium thionyl chloride (Li-SOClâ‚‚) primary cell designed for demanding industrial and commercial applications requiring long-term, maintenance-free operation. This AA-size battery delivers 3.6V nominal voltage and 2.1Ah capacity, making it ideal for memory backup, remote sensors, utility metering systems, and critical equipment that cannot tolerate power interruptions. With exceptional shelf life and proven reliability across harsh environments, the TL-2100/S is trusted by system integrators and maintenance teams worldwide.
Key Features
- High Energy Density & Extended Runtime: Maintains stable operating voltage for most of its life, ensuring consistent performance over an extended period of time with over 10 years of shelf life
- Wide Operating Temperature Range: Operates in extreme temperatures ranging from -60°C to +85°C (-76°F to +185°F), suitable for both indoor and outdoor industrial deployment
- Low Self-Discharge: Low self-discharge rate, enabling the battery to retain its charge for long periods of time when not in use
- Non-Flammable & Safety-Certified: Inorganic electrolyte is non-flammable and non-pressurized at ambient temperatures
- Compact AA Form Factor: Compact dimensions—14.5 mm in diameter and 50.5 mm in height—ensure compatibility with common AA battery slots while maintaining lightweight convenience at 17.6 grams (0.62 oz)
- High Current Capability: Maximum continuous current of 120 mA and a maximum pulse current capability of 200 mA for responsive applications
Technical Specifications
- Voltage: 3.6V nominal (DC)
- Capacity: 2.1Ah (2100mAh)
- Chemistry: Lithium Thionyl Chloride (Li-SOClâ‚‚)
- Cell Size: AA
- Dimensions: 14.5mm diameter × 50.5mm height
- Weight: 17.6g (0.62 oz)
- Termination Style: Button Top (Pressure Contact)
- Operating Temperature: -55°C to +85°C
- Shelf Life: 10+ years
- Maximum Continuous Current: 120mA
- Maximum Pulse Current: 200mA
- Type: Non-Rechargeable Primary Cell
- IEC Equivalent: LS14500, ER14505
Typical Applications
- Utility Meters: Long-term power for smart meter and automatic meter reading (AMR) systems
- Industrial Sensors: Remote and difficult-to-access sensor nodes in manufacturing, infrastructure, and process monitoring
- PLC Memory Backup: Volatile memory retention for Siemens, Mitsubishi, Allen-Bradley, and other programmable logic controllers
- Security & Access Control: Backup power for alarms, door locks, transponders, and surveillance systems
- Medical Instrumentation: Portable and implantable medical devices requiring high reliability and long operating life
- Tracking & Telemetry: Vehicle location, asset tracking, and data acquisition in remote or extreme environments
Compatibility & Replacements
Compatible With
- Allen-Bradley PLC memory backup circuits
- Siemens industrial automation equipment
- Mitsubishi control systems
- Modicon / Schneider devices
- Saft equipment requiring primary lithium cells
- Xeno-compatible equipment and legacy systems
- Standard AA battery compartments with pressure-contact terminals
Replaces / Drop-In Replacement For
- Fanso, Allen Bradley, Modicon, Mistubishi, Saft, Siemens, Tadiran and Xeno cross references
- IEC LS14500 equivalent cells
- ER14505 (international equivalent)
- Tadiran TL-2100 (non-terminated variant)
Works With
- All standard AA battery holders with raised positive and flat negative terminal design
- Button-top compatible battery compartments
- Industrial control system backup power circuits rated 3.6V DC
- Lithium-cell compatible equipment (non-rechargeable)
















