Honda is readying its solid-state tech for mass production in the second half of the 2020s. The company’s CEO Toshihiro Mibe has eluded that solid-state batteries will also be the key to unlocking cheaper EVs.

Fresh off a successful launch of its Prologue electric SUV, Honda showcases its commitment to solid-state batteries, known as the ‘holy grail’ of EV batteries.

Honda Motor aims to double the driving range of its electric cars by the late 2020s when they start to adopt all-solid-state batteries, a new type of power source under development, the head of its research unit said on Wednesday.

Solid-state battery tech could double the range of Honda’s EVs by the late 2020s, its R&D chief claims. Keiji Otsu said it wants to reduce the size of batteries by 50 percent and reduce cost by 25 percent.