Mazda has identified those years as the second phase of a three-phase plan, saying in November it would introduce battery EV models in the latter half of that period.
The companies said their talks will focus on a partnership for the medium to long term.
In 2012, Mazda used 1865 battery cells supplied by Panasonic in its Demio EV in Japan, leasing out 100 units of the subcompact as a trial for boosting knowledge about electrification, the spokesperson said.
Japanese automakers are gearing up to compete for a bigger share of the global EV market.
The world’s top-selling automaker Toyota Motor Corp., which owns a 5 percent of Mazda, unveiled a sweeping plan last week to adopt solid-state batteries and other technologies to improve the driving range and cut costs of future EVs.
Japan said on Friday it would boost support for domestic battery production to up to $2.2 billion, pledging support to Toyota and other makers in a push for greater economic supply chain security.