"At Busworld Europe 2025, Cummins showcased a technology portfolio that spans batteries, combustion engines, hydrogen and natural gas-reflecting the different speeds and needs of the global bus market. The company's strategy combines zero-emission development with continued investment in advanced combustion platforms, acknowledging that operators across regions are moving toward decarbonisation through multiple pathways. To explore these parallel tracks, we spoke with Mahendra Kumbhar, Battery Systems Customer Engineering Manager at Accelera by Cummins, the zero emission brand launched in 2023."
"These packs are modular and use advanced LFP technology to provide higher volumetric and gravimetric energy density. How does the energy density compare to older LFP or NMC batteries? M.K.: Older LFP batteries have around 145 Wh/kg. Our new packs achieve about 165 Wh/kg, approaching the levels of NMC batteries while retaining the advantages of LFP in terms of safety, cycle life, and total cost of ownership. They also support higher C-rates compared to NMC."
Cummins pursues multiple decarbonisation routes by developing next-generation LFP battery packs while continuing investment in advanced combustion, hydrogen, and natural gas platforms. The new modular LFP packs achieve about 165 Wh/kg, improving volumetric and gravimetric energy density and approaching NMC levels while preserving LFP advantages in safety, cycle life, and total cost of ownership. The packs support higher C-rates and will be produced regionally, with a 3T variant in North America in 2027 and one-tier transit packs from Europe in 2028. Product variants will be localized based on customer demand as markets transition at different speeds.
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