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Last updated: January 2026
This directory lists 42 ev battery pack manufacturers across the United States, from rapid prototyping specialists to high-volume automotive suppliers.
Buyers in this category are typically solving critical problems related to energy density optimization, managing significant heat flux under varied operating conditions, and ensuring the battery pack's robustness against vibration, impact, and thermal runaway events. The iterative process of Design for Manufacturability (DFM) for battery packs is a continuous dialogue, balancing performance metrics with manufacturability and cost targets.
Suppliers in this space range widely: some focus on low-volume, highly specialized applications like heavy-duty industrial or marine, offering bespoke module and pack designs. Others are geared for automotive-grade production, acting as Tier 1 or Tier 2 suppliers, often boasting capabilities for more advanced integration strategies like module-to-pack or direct cell-to-pack (CTP) assemblies, distinguishing them by their scale and systems integration expertise.
To engage effectively, buyers should come prepared with detailed performance specifications—including desired power and energy profiles, target cycle life, required thermal dissipation capabilities, and precise mechanical integration requirements for their vehicle. A clear regulatory compliance roadmap (e.g., target market vehicle standards like ECE R100 or FMVSS) is also crucial. Suppliers, in turn, expect a comprehensive Statement of Work (SOW) that outlines the project scope and key deliverables.
A significant trend in EV battery pack manufacturing is the accelerating shift towards cell-to-pack (CTP) and even cell-to-chassis (CTC) integration. This drive aims to maximize volumetric energy density, simplify manufacturing processes, and reduce overall pack costs by eliminating intermediate module housings and leveraging the vehicle structure for enhanced rigidity and thermal management, profoundly impacting future pack designs and supplier requirements.
42 companies nationwide
Based in Santa Ana, CA, Aegis Battery manufactures Lithium NMC and LFP battery packs. The company produces a range of battery solutions, including 12V, 36V, 48V, 52V, and 60V battery packs, suitable for diverse applications. They also offer associated battery chargers.
Based in Hallandale, FL, AmericanElectric Energy manufactures high-performance lithium battery packs in the USA. These battery solutions are engineered for diverse applications, including e-bikes, scooters, robotics, medical devices, and various industrial and military projects.
American Battery Factory specializes in the U.S. manufacturing of high-performance prismatic Lithium Iron Phosphate (LFP) batteries. The company focuses on enhancing US energy security with locally produced LFP batteries, supporting optimization for home, business, grid-level power, and electric vehicle applications.
Based in Las Vegas, NV, American Battery Solutions engineers, develops, and manufactures lithium-ion battery systems. They provide advanced energy solutions for electric vehicles, electrified transportation, and various industrial and commercial markets.
Based in Fremont, CA, Amprius Technologies manufactures high-energy density silicon anode lithium-ion battery cells. These groundbreaking batteries are specifically designed for electric vehicles, manned and unmanned aviation, and drones. Their technology enables longer range, faster charging, and higher payloads for diverse electric mobility applications.
BatterySpace, based in Richmond, CA, specializes in designing and assembling custom lithium-ion battery packs, including LiFePO4 and NMC chemistries. They provide a total solution for portable power, serving EV/Golf Car/PowerSport and other industrial applications. All products are designed, assembled, and quality controlled in the USA.
Based in Bethlehem, PA, Bicycle Motor Works manufactures high-quality, high-current battery packs. They specialize in custom EV batteries and eBike battery packs, including their Winter-Ready series designed for cold temperatures. Utilizing premium certified cells and pure copper busbars, their U.S. Made products provide robust and reliable performance.
Based in Commerce, TX, BigBattery engineers and manufactures UL9540 and ISO 9001 certified LiFePO4 battery packs. They provide advanced battery solutions for various applications, including off-grid home energy storage systems, golf cart fleets, and 24V and 36V electric equipment.
Based in Reno, NV, Dragonfly Energy specializes in North American manufacturing of high-quality lithium-ion batteries. The company focuses on advanced cell manufacturing processes, sophisticated battery pack design, and full system integration. They produce LiFePO4 battery packs engineered for diverse deep cycle applications, ensuring reliability and performance.
BYD is a global manufacturer of electric vehicles, including battery-electric buses and trucks, with significant operations in the United States. The company designs and produces its own advanced EV battery packs, such as the innovative Blade Battery, for use in its diverse vehicle lineup.
Based in Bedford, MA, Epec specializes in designing and building custom battery packs, offering solutions for lithium-ion, NiCd, and alkaline chemistries. They provide reliable, high-performance power tailored for diverse applications, including potential EV battery pack manufacturing.
Based in San Marcos, CA, EV West specializes in providing EV battery packs and conversion components. The company offers turnkey battery pack solutions, including assembled Tesla modules and complete CATL LFP battery packs. They also supply essential EV parts such as drive units and Battery Management Systems (BMS).
Based in Provo, UT, Hypercraft designs, tests, and manufactures high-performance modular EV battery packs in the USA. They provide specialized battery solutions for electric vehicles, focusing on in-house production to ensure top-grade performance and quality.
Inventus Power specializes in designing and manufacturing highly engineered custom battery solutions and proprietary lithium-ion battery packs. The company provides power supplies and chargers for complex applications, serving diverse markets including xEV (electric vehicles), medical, military, commercial, and consumer electronics.
Based in Waterbury, VT, KORE Power specializes in manufacturing advanced LFP and NMC battery cells and scalable blocks for e-mobility and energy storage solutions. They provide comprehensive EV power components, catering to commercial, industrial, and grid-scale applications. The company leverages US-engineered technology to fuel the global clean energy transition.
Octillion designs and manufactures tailor-made EV battery systems and battery management systems for passenger cars, commercial vehicles, marine, off-highway, and industrial equipment. Based in Reno, NV, they provide customized, high-volume battery solutions for tier-1 clients, driving electrification across various sectors since 2009.
Based in Carson, CA, Stealth EV designs and manufactures HyperPacks, modular EV battery packs available in 400, 600, and 800 volts, with capacities up to 120kW. These versatile battery solutions are engineered for various projects requiring high-performance power.
Based in Joplin, MO, Vision Battery USA is an industrial manufacturer of safe lithium iron phosphate (LFP) battery solutions. They provide batteries for diverse motive power applications, including golf carts, wheelchairs, marine/RV, and industrial lifts. Vision Battery USA also serves telecom, UPS, and solar power systems.
Voltari Power, based in Fort Lauderdale, FL, manufactures high-performance electric propulsion systems, EV powertrains, and battery packs for heavy-duty, high-resistance marine applications. The company produces deep-V hulls, powertrains, and batteries in-house, focusing on zero-emission electric performance boats.
Ample designs and manufactures modular, swappable EV battery packs featuring a 'lego-like' architecture compatible with any electric vehicle. Their innovative technology facilitates battery swapping in under 5 minutes, offering a rapid alternative to charging. Ample also deploys lightweight stations that integrate renewable energy, providing a scalable and cost-effective energy delivery system for EVs.
Ford is establishing a dedicated EV battery cell plant in Michigan, known as BlueOval Battery Park, to produce high-quality batteries. The facility is designed with clean rooms to ensure the integrity and performance of the cells, which will be integrated into Ford's electric vehicle battery packs.
Based in Beltsville, MD, ION Storage Systems develops patented solid-state battery technology. Their 3D ceramic battery architecture eliminates liquid electrolytes, preventing thermal runaway and removing the need for external compression or cooling. This platform is designed for electric vehicles, consumer electronics, and aerospace, offering safety, high energy density, and fast-charging capabilities.
Mobile Power Solutions, based in Beaverton, OR, designs, evaluates, sources, and assembles custom lithium-ion battery packs. They provide battery pack assembly for low volume and mission-critical applications, serving OEMs in the autonomous vehicle, aerospace, and aviation markets. The company also offers extensive battery testing and regulatory qualification services.
Powerful Lithium specializes in manufacturing high-performance, long-range EV battery packs. They provide custom-designed 72V and 81V battery solutions tailored for specific applications, including the RZ electric motorcycle and e-bike market. Their offerings cater to the specialized needs of electric vehicle enthusiasts.
Toyota is a global automotive manufacturer actively engaged in the development and production of lithium-ion battery technology. The company operates a U.S. mega site designated as a hub for developing and producing these batteries, with an annual capacity of 30 GWh, supporting electrification and mobility advancements.
Based in Burlingame, CA, Proterra designs and manufactures high-energy lithium-ion battery systems for heavy-duty on- and off-road electric vehicles. They offer scalable, modular packs (40-200 kWh) prioritizing safety, durability, and high energy density. Proterra provides engineering expertise and seamless vehicle integration services.
QuantumScape specializes in developing and manufacturing solid-state lithium-metal battery technology for electric vehicles. Based in San Jose, CA, the company focuses on creating next-generation anode-less battery cells designed for greater energy density, faster charging, and enhanced safety. Their innovative technology aims to enable more efficient power for the transition to a lower carbon future.
Cummins Inc. is a global power technology leader specializing in diversified power solutions. Through its Accelera brand, the company manufactures advanced battery systems, including those designed for electric vehicles (EVs). Cummins provides a range of zero-emission solutions alongside its traditional power products.
Lithium Battery Company offers fully automated, American-made lithium battery pack manufacturing. They build custom packs for defense, medical, marine, and industrial OEMs, providing high-volume throughput up to 2,000 units daily. Their facility uses robotics, real-time monitoring, and in-line testing for precision, pursuing ISO 9001 and IATF 16949 certification.
Based in Verdi, NV, Power-Sonic provides innovative battery solutions, including custom battery pack design and assembly. They specialize in sealed lead acid and lithium batteries, modules, and cells for various applications, including electric vehicles (EVs), energy storage systems, and industrial uses. The company also manufactures EV chargers.
SK Battery America manufactures highly reliable battery solutions for electric vehicles (EVs) and energy storage systems (ESS). Based in Commerce, GA, the company develops advanced battery cell and module technologies, primarily serving the automotive industry with a focus on sustainable and ethical practices.
AESC US manufactures high-performance lithium-ion batteries and battery packs for zero-emission electric vehicles and energy storage systems. The company operates gigafactories featuring advanced robotics and smart systems, contributing to the lithium-ion battery revolution for a clean energy future.
Based in Columbus, IN, Accelera manufactures advanced NMC high-voltage EV battery packs. These integrated battery systems offer high energy efficiency, durability, and fast charging capabilities for zero-emissions technologies, providing reliable and sustainable power solutions.
Based in Bellingham, WA, APP EV Systems, LLC engineers and manufactures universal modular battery packs. The company provides complete, bolt-in EV conversion systems for classic cars, featuring no cutting or welding. They utilize new components and precision engineering, offering integrated cooling and charging capabilities.
Based in Kensington, PA, Re:Build Battery Solutions engineers and manufactures high-performance lithium-ion battery modules and packs, including BMS hardware/software. They also provide production automation systems. Serving aerospace, defense, automotive, and energy, their US-manufactured battery systems meet rigorous demands.
Based in North Logan, UT, Electric Power Systems manufactures modular energy storage systems, batteries, and battery chargers. The company provides smart, eco-friendly electric solutions primarily for commercial aerospace and defense industries, including electric airplanes. They also emphasize leading regulatory certifications for their high-power systems.
Based in Billerica, MA, Factorial Energy manufactures high-performing, safe, and scalable solid-state batteries. Their advanced technology is designed for eMobility, defense, and AI/robotics, offering next-generation solutions beyond conventional lithium-ion limits. Factorial employs a capital-efficient manufacturing strategy compatible with existing production lines.
GobelPower Inc. manufactures high-performance LiFePO4 battery packs in the USA, specializing in custom battery solutions for electric vehicles (EVs) and other energy storage needs. The company develops, tests, and produces robust and reliable battery packs, offering comprehensive services from design to production.
Based in Holland, MI, LG Energy Solution Michigan, Inc. manufactures and designs lithium-ion batteries for electric vehicles (EVs), mobility, IT, and energy storage systems. As part of LG Energy Solution’s global network, its Michigan facilities contribute to a sustainable future by providing advanced EV battery technologies.
LG Energy Solution and Honda's joint venture is establishing an EV battery plant in Fayette County, Ohio. This facility will produce lithium-ion batteries for Honda and Acura EV models destined for the North American market. Production is slated to begin by the end of 2025.
Lyten develops and manufactures advanced lithium-sulfur battery systems utilizing supermaterials for high energy density and lightweight solutions. Based in San Jose, CA, the company aims to enable mass-market EV adoption, offering battery products for electric vehicles and other industrial applications.
GM Powered Solutions manufactures commercial Lithium-ion battery packs, offering flexible power and installation for diverse applications. The company specializes in advanced powertrain and electrification solutions, providing pure electric or hybrid systems. They also engineer engines and transmissions to support comprehensive electrification projects.
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The BMS is the brain of the battery pack, crucial for safety, performance, and longevity. Look for suppliers with in-house software development capabilities, demonstrable experience with functional safety standards (e.g., ISO 26262), and a proven track record of integrating their BMS with various vehicle control units (VCUs) via robust communication protocols like CAN or Ethernet. Their ability to customize BMS algorithms for your specific cell chemistry and operational profile is also key.
Beyond standard electrical testing, essential capabilities include environmental chambers for thermal cycling and humidity, vibration and shock testing to simulate road conditions, ingress protection (IP) testing, abuse testing (e.g., nail penetration, crush, overcharge) to confirm safety limits, and UN 38.3 conformance testing for safe transport. For automotive applications, look for facilities capable of simulating vehicle-specific load profiles and validating thermal runaway propagation prevention.
While UN 38.3 is mandatory for transport, specific end-use applications require additional certifications. For on-road vehicles in Europe, ECE R100 is critical; for the US, compliance with Federal Motor Vehicle Safety Standards (FMVSS) is necessary. Industrial or off-highway EVs might require ISO 13849 for machine safety, while marine applications have their own specific maritime class society approvals. Functional safety (ISO 26262) for the BMS is also increasingly a requirement across many sectors.