FILE PHOTO: A man is seen next to Panasonic Corp's logo at Panasonic Center in Tokyo, Japan, February 2, 2017. REUTERS/Kim Kyung-Hoon
TOKYO (Reuters) - Panasonic's battery unit head on Monday unveiled a powerful prototype battery he said will deepen business ties with U.S. electric car maker Tesla Inc.
He also said the company had no plan to make cheaper lithium iron phosphate (LFP) batteries for electric vehicles.
