EEMB ER17505M-Spiral Type Lithium Thionyl Chloride Battery

[Value]: 

For more information, please visit SUNJ ENERGY.

ERM, A Size, 3.6V/ mAh

Lithium Thionyl Chloride Battery Spiral Type 

Non-Rechargeable
Norminal Capacity: mAh
Norminal Voltage: 3.6 V
Max Continuous Discharge Current: 400mA
Weight: 28g
Diameter: 17mm
Height: 50.5mm
Operating Temperature: -55 ° C ~ +85 ° C
Shelf Life: 10 years
Self-discharger Rate: ≤2%

[Compatible]: 

Ideal For Alarm System/PLC Memory Backup Power/PLC CNC System/Servo Motors/Machine Tools/Instruments/Special Electronic Equipment/Intrusion Sensors/Invisible Fencing/Smart Utility Metering/Emergency Backup/Gas/Water/Electric Meter/Toll RFID/IoT/Movemet Sensor Monitor/Home Security System/Alarm System/PLC/Fleet Monitoring/Data Collection./.AMR Add-ons/Smoke Alarms/Taxi Meter

[Single Use]: 

These batteries are NOT rechargeable.

The ERM is a high-performance, spiral-wound 3.6V Lithium Thionyl Chloride (Li-SOCl₂) battery, specifically designed for applications requiring high pulse current, extended operating life, and exceptional reliability. With a nominal capacity of mAh and an energy density of up to 450Wh/kg, this battery excels in demanding industrial, IoT, and high-drain electronic applications.

Engineered to perform in extreme conditions from -55°C to +80°C, the ERM maintains a stable output voltage with minimal self-discharge (less than 1% per year at 25°C), offering a shelf life of over 10 years under optimal storage. Its advanced lithium metal anode and carbon-thionyl chloride cathode ensure consistent performance during both continuous and pulse discharge. Certified to UN38.3, UL, and CE standards, this non-rechargeable lithium cell is safe for global transportation and industrial use.

All SUNJ batteries are designed to withstand reasonably foreseeable misuse and are tested in compliance with international performance, safety, and transport regulations. 

Basic Parameters

Compatible Part Numbers

LS, XL-100F, ER17/50, Bat-, NSN -01-524-, , T32/8AA, and others.

▎Note: Compatibility is based on voltage, dimensions, and performance. Please consult our technical support team for replacement or installation advice.

▎Storage Guidelines: Store in a clean, cool (preferably <20°C, not exceeding 30°C), dry, and well-ventilated environment.

Flexible Single Cell Solutions

SUNJ offers customizable battery configurations designed to match different applications and fit your device precisely.

◆ S: Standard Terminals

◆ P: Axial Pins

◆ T: Solder Tabs

◆ Custom Terminals: Available upon request

Warnings

● This is a non-rechargeable lithium battery. Do not charge.

● Keep away from heat, fire, flammable or explosive materials.

● Do not short-circuit, crush, disassemble, incinerate, or expose to temperatures above 100°C.

● Operate only within the recommended temperature range.

Electrical Performance Graph

ERM Discharge Profiles (25°C) ↓

Voltage Recovery After Storage ↓

Voltage vs. Temperature curve ↓

Capacity vs.Current(2.0V cutoff) ↓

Key Features

● High and stable operating voltage

● Long shelf life (Annual self-discharge rate less than 1% at 25°C)

● Wide operating temperature range (-55℃ to +80℃)

● Non-flammable electrolyte

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● Glass-to-metal hermetic seal protects against leakage

● Excellent passivation resistance; Low magnetic interference

● Lower ESR (Equivalent Serial Resistance)

● Excellent resistance to humid environments

● High specific energy density: 450Wh/kg

● Long lifespans (over 10 years under normal conditions)

● High safety and reliability: UL / IEC-4 / UN38.3

● Safe to export; MSDS, UN38.3 certification available

Applications

The ERM is widely used in:

● Smart metering (gas, water, electric)

● Industrial automation systems

● Alarms and security devices

● Medical devices and diagnostics

● IoT devices and asset tracking

● Automotive electronics

● Communication systems and sensors

● R&D instruments and field data loggers

All Li-Socl2 Battery Specifications

International Model SizeMax Dimension [mm]Weight [g]Nominal Voltage [V]Nominal CapacityMax Continuous Operating Current [mA]Max Pulse Operating Current [mA]Model No.SizeEnd Voltage [V]Nominal Current [mA]Nominal Capacity[mAh]Bobbin TypeERHAAAΦ10.5*45..62.01.ERH1/2AAΦ14.5*25..62.01.ERH2/3AAΦ14.5*33..62.01.ERHAAΦ14.5*50..62.01.ERH2/3AAΦ17.5*33..62.01.ERHAΦ17.5*50..62.02.ERH――Φ18.5*50..62.02.ERHCΦ26.2*50..62.02.ERH――Φ34.2*58..62.02.ERHDΦ34.2*61..62.02.ERHCCΦ26.2*102..62.02.ERHDDΦ34.2*124..62.05.ER9V――17.0*26.5*48..86.01.Spiral TypeERM1/2AAΦ14.5*25..62.02.ERM2/3AAΦ14.5*33..62.02.ERMAAΦ14.5*50..62.03.ERM2/3AΦ17.5*33..62.03.ERMAΦ17.5*50.5263.62.05.0400ERM――Φ18.5*50..62.05.ERMCΦ26.2*50..62.ERMDΦ34.2*61..62.ER9V――17.0*26.5*48..86.01.

Selection Guidelines:

◆ High Current / Pulse Applications → Spiral-type Cells

◆ Long-Term, Low-Current Applications → Bobbin-type Cells

◆ Higher Capacity Needs → Larger Size Models

Flexible Battery Pack Solutions

For projects requiring higher voltage or capacity, battery packs can be customized by combining multiple cells.

Our battery pack solutions are designed for easy integration and tailored to specific voltage, capacity, and size requirements. 

By connecting ER cells in series or parallel, we create custom battery packs optimized for performance and safety in device applications.

Pack Customization Includes:

◆ Series and parallel configurations

◆ Custom connectors and wiring harnesses

◆ Encapsulation, heat-shrink, or plastic casing options

◆ PCM/PCB protection circuits and safety components

◆ IP-rated waterproofing solutions available upon request

◆ Capacitors for voltage stabilization and pulse current support

Popular Searches

If you are looking for reliable, high-power 3.6V lithium battery solutions, the ERM is an excellent choice. Known for its high pulse performance and long-term stability, this A-size spiral-wound Li-SOCl₂ battery is perfect for a wide range of applications, including industrial automation, medical devices, smart meters, automotive telematics, and remote monitoring systems. With its robust design and high energy density, it stands out among other lithium primary batteries, making it ideal for critical applications requiring long-lasting power and reliable performance.

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