ER Cylindrical (Li/SOCl₂) Batteries
When performance matters, Ultralife’s ER Cylindrical Lithium Thionyl Chloride (Li/SOCl₂) cells deliver. Whether your priority is maximum capacity or high power output, our ER series offers flexible, high-density solutions tailored for mission-critical applications.
Built by Engineers, For Engineers
At Ultralife, we specialize in custom and standard battery packs designed to meet your unique needs. Our strength lies in deep technical expertise, collaborative problem solving, and our ability to deliver application-specific energy solutions—no matter the complexity.
Why Choose ER Cylindrical Cells?
Ultralife’s ER Cylindrical cells are built for performance in the harshest conditions, offering industry-leading reliability and power consistency. Whether you need immediate stock or scalable production, our solutions are ready to meet your critical energy demands with speed and confidence.
- Up to 30% More Capacity
- Ultra-High Energy Density
- Wide Temperature Range
- Non-Flammable Electrolyte for Enhanced Safety
- Off-the-Shelf Availability
- Short Lead Times
ER Cell Product Families
Ultralife’s ER Generation X cells deliver up to 30% more capacity and 400 Wh/Kg energy density in compact bobbin or spiral designs—ideal for metering, communications, security systems, and more, with built-in safety and certified reliability.
ER Generation X
- High and stable operating voltage
- Superior current capabilities
- Low self-discharge rate
ER Generation X2
- Designed for gas metering and hazardous environments
- Includes safety venting for added protection
Ready to Find the Right Power Solution for Your Application? Our Experts Are Here to Help.
