On top of news from the Battery Show, 24M Technologies, Inc. revealed that its 24M ETOP™ (Electrode-to-Pack) technology is now available to U.S. manufacturers seeking to produce high-performance electric vehicle (EV), eVTOL, energy storage (ESS), and consumer electronic batteries domestically. The system, first launched in October 2023, has quickly become one of the most discussed innovations in battery design. Unlike traditional methods that rely on complex cell and module assembly, 24M ETOP eliminates those layers entirely, integrating electrodes directly into the battery pack. The result is a leaner, faster, and more efficient manufacturing process capable of producing compact, high-voltage batteries with exceptional energy density and flexible design options.
“The pressure to compete on price, design and performance is mounting for American industries that are heavily reliant on imported batteries,” said Naoki Ota, 24M’s president and CEO. “The U.S. must advance battery innovation, not just scale production to close the gap with competitors overseas. Our 24M ETOP offers U.S. manufacturers the technology they need to leapfrog Asian counterparts with industry-leading energy density, first-of-its-kind design flexibility, and lower manufacturing costs.”
A New Blueprint for the Battery Industry
Traditional battery production has long been hampered by inefficiency. Today’s packs are built from hundreds — sometimes thousands — of individual cells housed in metal and plastic, much of which adds weight and cost but not energy. This fragmented design has constrained innovation and driven up expenses. 24M ETOP confronts those limitations by removing cells entirely, replacing them with sealed anode and cathode pairs that are stacked and wired directly into the battery pack. This architecture transforms how batteries are built, enabling up to 80% of the battery’s volume to be composed of energy-carrying electrode materials — compared to just 30–60% in conventional packs. The payoff is a substantial boost in energy density, range, and performance without added cost.
For U.S. manufacturers, ETOP’s simplicity is also its strategic strength. The system can be deployed on compact, low-cost manufacturing lines that require minimal capital investment and infrastructure — a critical advantage for companies trying to compete with larger Asian producers. A single ETOP machine can fabricate sealed electrodes, assemble them into the pack, wire the system, and close it for final production. This streamlined process not only reduces labor and material costs but also qualifies manufacturers for federal production tax credits under Section 45X of the Inflation Reduction Act, further improving the economics of domestic battery manufacturing.
Powering the Future of eVTOL and Beyond
24M’s platform arrives as the U.S. looks to strengthen its foothold in the emerging electric aviation market, projected to exceed $1.75 billion by 2028. The ETOP technology is particularly well-suited for eVTOL aircraft, where lightweight, high-power designs are essential for efficiency and range. Beyond aviation, its flexibility allows it to be adapted for a wide spectrum of uses — from grid-scale energy storage and passenger EVs to electric bikes, robotics, and portable electronics.
To further enhance performance, ETOP can be paired with the company’s Impervio™ separator for improved safety and Eternalyte™ electrolyte, enabling rapid charging even in subzero conditions. Combined, these innovations could pave the way for the industry’s next milestone: a 1,000-mile-per-charge battery pack, a goal long viewed as the holy grail of electric mobility.
Founded in Cambridge, Massachusetts, and led by a team of battery pioneers and engineers, 24M Technologies has built its reputation on reinventing both the structure and economics of energy storage. With ETOP, the company aims to give U.S. manufacturers not just a competitive tool, but a new paradigm — one that replaces decades of incremental progress with a leap toward energy independence, sustainability, and innovation.