
Explore Our Battery Technologies

Our team of seasoned applications engineers partner directly with your development teams from concept through production. With decades of real-world experience across critical power applications, we understand the challenges you face— safety certifications, thermal management, lifecycle demands and more—and we solve them head-on.
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.
- Lithium Manganese Dioxide (LiMnO2) cells offer a flat discharge curve, leak proofed containers for long shelf life and more - includes ULTRALIFE's 9 Volt, CR123A & Thin Cells®.
- Lithium Thionyl Chloride (LiSOCl2) cells have the highest energy density and a passivation layer that provides long storage with minimal loss in cell capacity - includes ULTRALIFE's ER Generation X & ER Generation X2 cells.
- Lithium Carbon Monofluoride Manganese Dioxide (LiCFx/MnO2) or XR Cylindrical cells provide approx. a 50% increase in both capacity and shelf-life (compared to LiMnO2), whilst also reducing initial suppression of cell voltage (typical of pure CFx).
- Cells can also be assembled into battery packs to further increase voltage or capacity.
- The Lithium Thionyl Chloride (LiSOCl2) M1 packs, manufactured by ULTRALIFE, offer high energy density and are light weight (ranging from 3.3kg to 10kg).
- ULTRALIFE's Lithium Carbon Monofluoride Manganese Dioxide (LiCFx/MnO2) UBI-2590 packs offer 50% or more capacity than the lithium sulfur dioxide batteries that remain popular with the armed forces.
- Available in configurations from 1S1P to 4S2P, ULTRALIFE’s Lithium-ion Soft Packs weigh as little as 24g and have energy ratings under 100Wh (simplifying shipping).
- ULTRALIFE’s Lead Acid Replacement batteries offer less weight (15kg compared to 45kg), more power and lower cost. They can be mounted in any orientation, saving space.
- For users who need to switch between high voltage (up to 28.8V) and high capacity (up to 20.8Ah), ULTRALIFE’s smart and non-smart UBI-2590s can be used in either series (voltage) or parallel (capacity) mode.
- Designed as part of a US army program that looked to reduce the weight on the soldier, ULTRALIFE’s Land Warrior range (up to 195.8Wh) includes a wearable battery (105.1Wh) that weighs just 0.96kg.
- The extensive range of accessories includes cables, power adapters and connectors.
- Smart cables allow extensive battery information to be accessed in the field.
- Every custom battery pack project starts with ULTRALIFE’s technical experts selecting the optimum cell to meet your exact power requirements.
- Then, our teams of mechanical and electrical engineers design and build a battery pack (and charger if applicable) around it.
- Working closely with your in-house teams, ULTRALIFE ensures that your size, performance, safety and certification requirements are met.











