SoftBank partners with South Korea's Cosmos Lab and DeltaX to mass produce next-gen data center batteries in Japan at the scale of one GWh per year in FY 2027 (Min-Jeong Lee/Bloomberg)

<a href="https://www.bloomberg.com/news/articles/2026-05-11/softbank-plans-to-make-large-scale-batteries-for-ai-data-centers"><img align="RIGHT" border="0" hspace="4" src="http://www.techmeme.com/260511/i3.jpg" vspace="4" /></a> <p><a href="https://www.techmeme.com/260511/p3#a260511p3" title="Techmeme permalink"><img height="12" src="http://www.techmeme.com/img/pml.png" style="border: none; padding: 0; margin: 0;" width="11" /></a> Min-Jeong Lee / <a href="https://www.bloomberg.com/">Bloomberg</a>:<br /> <span style="font-size: 1.3em;"><b><a href="https://www.bloomberg.com/news/articles/2026-05-11/softbank-plans-to-make-large-scale-batteries-for-ai-data-centers">SoftBank partners with South Korea's Cosmos Lab and DeltaX to mass produce next-gen data center batteries in Japan at the scale of one GWh per year in FY 2027</a></b></span>&nbsp; &mdash;&nbsp; SoftBank Group Corp.'s mobile unit said it plans to begin large-scale battery cell manufacturing at its Sakai, Osaka plant to address growing power demand for AI services.</p>