The 30-foot (12-meter) BYD K7M has 22 seats and can be charged in 2.5 to 3 hours. BYD says its range is 250 miles. The Chinese company offers a 12-year warranty on its batteries. The first ‘appearance’ of a BYD electric bus in Los Angeles dates back to 2014, when LADOT conducted a 90-day trial of a battery-electric bus. In January 2017, city officials introduced the first of four K9S battery-electric buses acquired by the LADOT with a grant from the California Energy Commission.