Sodium-ion batteries gained fresh momentum on August 3, 2026, as Mana Battery and Saft signed a Joint Development Agreement to develop, validate, and prepare next-generation cells for commercialization. The partnership combines Mana Battery’s proprietary electrolyte platform and anode-free sodium-ion cell technology with Saft’s expertise in cell design, prototyping, manufacturing, testing, and qualification. As a result, both companies aim to accelerate the path from laboratory progress to field-ready battery systems.
Sodium-ion batteries move closer to commercialization
Mana Battery, based in Broomfield, Colorado, develops high-energy anode-free sodium-ion batteries. Saft, a wholly owned subsidiary of TotalEnergies, brings more than 100 years of experience in advanced battery technology for industrial and mission-critical uses. Together, the companies plan to develop and validate sodium-ion cells under demanding performance and safety conditions. Moreover, they will focus on customer needs in defense, aerospace, rail, datacenter backup power, and industrial uninterruptible power supply systems.
The agreement builds on a technical evaluation that began in 2025. Therefore, this new phase marks a clear step toward commercialization. While the companies did not disclose financial terms, they outlined a practical plan. First, they will combine Mana Battery’s electrolyte and anode-free architecture with Saft’s development and manufacturing capabilities. Next, they will validate the cells for real-world operating conditions. Then, they will work toward broader deployment in critical applications.
Why sodium-ion batteries matter in 2026
Sodium-ion batteries continue to attract interest because they use abundant and low-cost raw materials. In addition, the chemistry avoids dependence on lithium, cobalt, and nickel. That feature supports a more resilient and geographically diversified supply chain. Furthermore, sodium-ion technology offers strong safety characteristics and dependable operation across a wide temperature range.
These advantages matter in sectors that demand reliability. For example, defense platforms need batteries that start engines in extreme cold and operate in high heat. They also need systems that hold charge during long standby periods and meet strict military safety standards. Likewise, aerospace and rail customers value safety, reliability, and energy density. At the same time, datacenters and critical infrastructure operators want dependable backup power as AI and cloud computing expand rapidly in 2026.
Anode-free sodium-ion batteries offer higher energy density
Anode-free sodium-ion batteries differ from conventional sodium-ion designs. Instead of using an anode active material during assembly, the sodium anode forms in situ during initial operation. Because of this architecture, the cell can deliver a meaningful increase in energy density. At the same time, it preserves the key benefits of sodium chemistry, including safety, supply chain flexibility, and cost advantages.
Mana Battery says its platform delivers energy density beyond conventional sodium-ion designs. The company also highlights its self-extinguishing electrolyte safety profile. These features make the technology especially relevant for applications where operators value safe, high-performance storage under harsh conditions. Therefore, the partnership with Saft gives the technology a route into markets that require rigorous validation and proven manufacturing processes.
Sodium-ion batteries for defense, rail, aerospace, and datacenters
The target markets for this collaboration reflect strong demand for dependable energy storage. Defense systems require batteries that perform in severe environments. Meanwhile, rail and aerospace customers need compact and reliable solutions with strong safety performance. In addition, datacenters need backup systems that support growing computing loads. Industrial UPS users also seek battery options that provide long life, wide operating temperatures, and enhanced safety.
Saft’s market access and qualification expertise can help move the technology into these sectors. The company already serves demanding industrial customers across land, sea, air, and space. As a result, Saft can support the detailed testing and validation needed before customers adopt a new chemistry for mission-critical use.
Sodium-ion batteries gain support from Mana Battery and Saft
Mana Battery CEO Tyler Evans said Saft brings decades of experience in qualifying cells for demanding defense, aerospace, rail, and industrial customers. He added that the agreement supports the maturity of Mana Battery’s electrolyte and anode-free platform and helps move it toward field deployment. In parallel, Saft Chief Technology & Innovation Officer Kamen Nechev described sodium-ion as a strategically important chemistry for the industries Saft serves. He also said anode-free designs represent a promising frontier within the category.
Overall, the Joint Development Agreement creates a focused path for sodium-ion batteries in high-value sectors. Mana Battery contributes electrolyte innovation and cell architecture. Saft contributes cell design, manufacturing depth, and validation expertise. Together, the companies aim to bring safe, high-performance sodium-ion batteries to defense, aerospace, rail, datacenter, and industrial UPS customers. Consequently, this partnership stands out as an important 2026 development in advanced battery technology.
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