EnergyTelecom ties up with two South Korean startups, targets annual sales of over $640mSoftBank plans to develop and manufacture battery cells and battery energy storage systems that will first be used for its own AI data centers.TSUBASA SURUGAMay 11, 2026 16:19 JSTTOKYO -- SoftBank Corp. has launched a battery business in Japan to help meet growing electricity demand from artificial intelligence data centers, with plans to eventually expand overseas.Read NextEnergySoftBank aims to make data center batteries without lithium, cobaltArtificial intelligenceSoftBank in talks with Nvidia to build made-in-Japan AI serversArtificial intelligenceHitachi, Advantest ride AI boom to lead Japan Inc. profit bonanzaSoftBankGoogle, Microsoft to be among bidders to lease SoftBank US data centerSoftBankSoftBank Group pivots to AI services with promotion of Arm CEO HaasArtificial intelligenceSoftBank to sell US startup Brain's AI smartphone in JapanLatest on EnergyEnergyDaiwa to invest $630m in Japan battery storage for chip, data center powerEnergyIndia raises regular fuel prices for 1st time in 4 years on Iran warEnergyThai oil group PTT's profit up 10% as Mideast crisis lifts revenue