The first was an upgraded version of its Shenxing battery designed to add more range when fast charging. CATL said the battery can now offer 520 kilometers (323 miles) of range from just five minutes of charging time — a marked improvement over BYD’s promise to add 400km (249 miles) of range in the same amount of time.

The manufacturer detailed how its new auxiliary EV battery doesn't require the use of graphite for its poles, allowing 60% more electricity to flow through each cubic inch.