Amperex Technology Ltd., the leading producer of lithium-ion batteries, convinced the Federal Circuit Thursday that a trio of Maxell Ltd. patents asserted against the battery maker are invalid.

This recent fire highlights not only the immediate environmental effects but also the long-term implications for the role of lithium-ion technology in renewable energy.

The Crown Signia, which is offered only as a gasoline-electric hybrid, replaces the Venza crossover hybrid, slotting tightly between the 13.2-inch shorter RAV4 and four-inch-longer Highlander ...