Sanyo is the largest lithium-ion rechargeable battery producer and 11th-largest solar cell producer in the world with a quickly-growing solar panel manufacturing arm according to company statements.
Panasonic Electric Works makes a wide range of electrical products including temperature, lighting and motion sensors and controls.
Last year, Panasonic acquired a 50.27% stake in Sanyo for $4.4 billion.
The pair of acquisitions should help the company best known for its Panasonic plasma TV, camera and other consumer electronics expand into energy technology.
Panasonic aims to become the “No. 1 green innovation company in the electronics industry” by 2018.