24M Launches ETOP Tech to Boost EV Energy Density

The 24M ETOP (Electrode-to-Pack) system eliminates traditional cells by integrating sealed, energy-storing electrodes directly into the battery pack.

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24M Technologies has introduced a breakthrough battery system called ETOP (Electrode-to-Pack) that significantly increases energy density for electric vehicles (EVs) and enables greater design flexibility. Unlike traditional lithium-ion batteries, which rely on bulky casings and modules that add weight and take up space, ETOP integrates sealed electrode pairs directly into the battery pack. This eliminates much of the inactive material found in conventional designs.

With ETOP, up to 80% of the pack’s volume can consist of active materials—far more than the typical 30–60%—allowing automakers to either boost EV driving range by as much as 50% or use lower-cost battery chemistries like LFP without sacrificing performance. For instance, a 75kWh NMC battery can be scaled to over 100kWh in the same space, or swapped for a cheaper chemistry like LFP while maintaining similar range.

Beyond performance gains, ETOP offers custom-shaped battery packs that can be tailored to a vehicle’s design, from oval to hexagonal layouts. It also improves manufacturing efficiency and safety, with fewer precision requirements and lower capital investment. The system supports a wide range of voltage configurations—from 48V to 800V—thanks to its simple series and parallel connections.

ETOP is designed to work seamlessly with 24M’s other advanced components like the Impervio separator, Eternalyte electrolyte, and LiForever electrode, all aimed at making batteries safer, longer-lasting, and more affordable. Together, these technologies could reshape the future of EV battery design by delivering greater range, flexibility, and cost-effectiveness.