The deal includes Sony Energy Devices, manufacturing plants in China and Singapore and key battery patents and researchers. It is expected to complete by the end of March 2017. The deal does not include Sony-branded USB batteries, button and coin cells or alkaline batteries.
The Sony battery business division was started in 1975 and commercialized the first lithium ion battery in 1991. It recently moved into lithium polymer and cylindrical lithium ion cells rather than pouches in a bid to improve profitability, and the move is part of the increasing consolidation in the power industry.
The new business will be part of the Murata group, but the financial terms of the deal were not disclosed.