IONCOR, an independent European battery systems supplier, has unveiled its Energy Pack Long, a high-density, modular battery solution aimed at streamlining the transition to zero-emission bus fleets. The new battery concept responds to both operational and economic demands faced by bus manufacturers and operators, offering greater reliability, flexibility, and cost efficiency.
Electric bus deployment has surged, with over 800,000 vehicles already in service worldwide. Public policy initiatives targeting zero-emission buses by 2030–2035, alongside subsidies and procurement incentives, are accelerating adoption. Technological advances—such as extended vehicle range and broader charging infrastructure—are further improving the viability of electric buses. Industry analysts predict that most new city buses will be zero-emission by the 2030s, highlighting the need for high-performance battery solutions.
Roberts Abele, CEO of IONCOR, noted that operators require battery systems capable of consistent performance across varied climates and routes while supporting diverse charging strategies. The Energy Pack Long delivers 79 kWh of capacity at 666 volts and achieves industry-leading energy density, making it compatible with a wide range of bus platforms. Its design prioritizes long cycle life and supports both depot and opportunity charging to maximize vehicle uptime.
Built on a cell-to-pack architecture, the system omits intermediate modules to boost energy density and reduce pack weight and footprint. The modular design enables configurations from 79 kWh up to 1,000 kWh in 79 kWh increments, with multiple chemistry options to suit different operational profiles. Cost efficiencies are realized through the use of high-volume cells, a streamlined pack architecture, and customizable warranty packages to align with fleet ownership models.
IONCOR specializes in battery systems for heavy-duty buses and trucks, off-highway machinery, and the automotive sector. The company provides modular products, tailored solutions, and contract manufacturing services to support electrification across commercial and industrial applications. With three high-volume plants in Finland and Germany and over three million battery systems produced, IONCOR continues to expand its technology and testing capabilities to meet growing market demand.
Source: IONCOR Batteries
