Panasonic unveils prototype battery for Tesla

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.

Kazuo Tadanobu, the head of Panasonic's energy business, spoke during a media roundtable.