The first BYD battery electric K-series bus was manufactured on 30 September 2010 in Changsha city of Hunan province.

[2] The K-series bus has been bought to operators in Mainland China, India,[3] Japan,[4] Hong Kong, United States, Colombia, Chile, Spain, Netherlands, Denmark, Aruba, Malaysia and Singapore.

[5][6][7][8][9][10] The company extended its production base in Tianjin, China at the end of July, 2012[11] and may plan to manufacture in Brazil[12] and Windsor, Canada.

[38] Battery capacities range from approximately 100 to 600 kWh, depending on the fitted drive axle and bus size.

Safety features include unitary construction body, 4-wheel disc brakes, ABS+ASR, one-step easy-pass with special footplates for wheelchair access and non-step inside.

To meet these requirements, BYD has opened a bus production facility in Lancaster, California in 2013[49] and K7 (2017),[42] K8 (2021),[43] K9 (2014),[44] and K11 (2020)[45] buses have been tested at Altoona.

[50]: 3  In addition, the BEBs were less reliable, being taken out of service more often than the CNG buses[50]: 4  and requiring more frequent roadcalls over a shorter distance traveled; the mean distance between roadcalls for the Long Beach BYD evaluation fleet was 6,830 km (4,244 mi), compared to 24,169 km (15,018 mi) for the CNG comparison bus fleet.

[51]: 24 At a press conference in Beijing on 4 November 2012, BYD announced "Zero vehicle purchase price, Zero costs, Zero emissions", to promote the sale of its e6 and K9.

The initiative is supported financially by China Development Bank from a fund totalling over 30 Billion RMB ($4.6B USD), and allows buyers to finance 100% of the purchase price with no down payment, paying a lease rate that effectively costs less than regular monthly operational expenses.

BYD electric bus has been tested in European countries including Denmark,[5] Finland, Germany, Hungary, Italy, the Netherlands, Portugal and Spain[116] in cities such as Bremen and Bonn, Helsinki, Coimbra,[117] Amsterdam, Copenhagen, Milan, Madrid, Barcelona,[118] Athens[119] and Warsaw.