BYD K9 (Gemilang)

BYD K9 (Gemilang)
BYD K9 Rear (Photo: LTA)
Manufacturer Changsha BYD Coach
Bodywork Gemilang Coachworks Sdn Bhd
Years in operation 2020–
Operators SBS Transit
Technical Data
Length 12 metre
Motor AC synchronous motor
Battery LiFePO4 (310kWh capacity)
Accessibility Low floor
Emission Standard Zero tailpipe emissions

The BYD K9 (alternatively, the BYD electric bus or BYD ebus) is a fully electric, low-floor single-deck city bus manufactured by BYD in China. The Chinese manufacturer sells electric buses of different lengths and sizes for local and international markets.

20 units of the BYD K9 bus were procured by the Land Transport Authority in 2018 for S$17.25 million (inclusive of charging infrastructure) as part of efforts to build a more environmentally friendly public bus fleet. In total, 60 electric buses were procured from three separate manufacturers at a total sum of S$50.64 million. While primarily offered as an integral bus, these BYD K9 buses for Singapore were bodied by Gemilang Coachworks, based in Malaysia.

Bus operators in China are primary customers of the BYD K9, with units operating in multiple Chinese cities.  In addition to strong success in the domestic market, similar BYD electric city buses have been successfully exported overseas, with large-volume orders entering service in cities across Europe, North America, South America and Asia, in addition to small-scale trials in many other regions.


The 12-metre BYD K9 bus incorporates large-capacity Lithium-Iron-Phosphate batteries which allow the bus to travel 250km on a single charge, under urban road conditions. The actual operating range is expected to be much lower in Singapore, where air-conditioning consumes a large portion of battery reserves.

The first BYD K9 rolled off the production line in Changsha, China on 30 September 2010. An initial 200 units were delivered to the Shenzhen public transit system to serve the 2011 Summer Universiade, and subsequently remained in regular service with the local bus system. BYD has since expanded its production to other parts of China as well as overseas.

Singapore Trial History

Main Article: Go-Ahead Singapore BYD Electric Bus Trial

First BYD K9 Trial (Click to expand)

In June 2011, SMRT Corporation signed a Memorandum of Understanding (MoU) with BYD to enter discussions on a joint venture of distributing BYD K9 buses and e6 taxis in Singapore. SMRT Buses was concurrently running a trial of a Zhongtong diesel-electric hybrid bus, which was subsequently rejected.

The BYD electric vehicles did not materialise in Singapore for 4 years. Panorama Melaka of Malaysia received a trial unit of the BYD K9 in 2013 with the chassis number LC06S24S3D00000002. Its interior specifications were similar to that of SMRT’s buses, featuring Vogelsitze seats with purple and red PVC seat covers, as well as a foldable seat similar to that installed on MAN A22 buses. This led to suspicion that SMRT had rejected its BYD K9 electric buses.

In April 2015, Singapore saw its first BYD K9 bus, which was brought in by HDT Singapore Holding (the sole Singapore agent of BYD Co. Ltd back then). This bus was parked inside Nanyang Technological University’s campus for inspection (April to July 2015), and was later shipped to Jakarta for a while before returning.

Go-Ahead Singapore trialled the bus (registered SG4001J) on revenue service for a little more than six months from November 2016 to May 2017 to assess the suitability of e-buses for public transport. The e-bus trial was part of an electric vehicle (EV) testbed led by LTA and the Economic Development Board to trial fleet-based EV operations. Charging equipment and infrastructure was installed at Go-Ahead‘s depot in Loyang.

After the trial, it was re-registered as PC6264K. Owned by BYD Singapore, it was also leased out to Tong Tar Transport Service Pte Ltd. As of July 2019, the bus was regularly sighted on the Downtown East Lunchtime Shuttle Bus.

As an expansion of the trial, the Government later moved to procure 60 more electric buses as surfaced during the Committee of Supply Debate 2017.

The BYD K9 chassis has also been offered with bodywork by Alexander Dennis and marketed as the Enviro200 EV. The bus has seen service in London, Liverpool and Auckland.

Regions with volume orders of the BYD K9 include Ruhr (Germany), Copenhagen (Denmark), Eskilstuna (Sweeden), Amsterdam Schiphol Airport & Schiermonnikoog (Netherlands), Brussels Airport (Belgium), Beauvais (France), Milan, Turin, Novara & Padua (Italy), Madrid, Badalona & Badajoz (Spain), Warsaw (Poland), Haifa, Tel Aviv & Jerusalem (Israel), Alexandria (Egypt), Cape Town (South Africa), Anaheim & Los Angeles (USA), St. Albert (Canada), Santiago (Chile), Mendoza (Argentina), Guayaquil (Ecuador), Medellín (Columbia), Salgótarján (Hungary), Bangalore & New Delhi (India), Canberra, Sydney & Brisbane (Australia), Kaohsiung & other cities (Taiwan), Kyoto & Okinawa (Japan), Daejeon (South Korea), Kuala Lumpur (Malaysia), among other regions.

Powered solely by electrical energy, the bus produces zero tailpipe emissions, which improves air quality in cities. Its batteries are environmentally-friendly, non-toxic and can be recycled. It also claims considerable savings in running costs as compared to regular diesel-powered buses.

Find out more about Electric Buses in Singapore here.


The BYD K9 for the Singapore market is built on the BYD D9RA chassis (produced in Shenzhen, China) and bodied by Gemilang Coachworks in Malaysia. The bus is primarily offered as an integral bus built domestically in China, and is one of many electric vehicles offered by BYD.

At the heart of the electric bus are its high-capacity Iron phosphate batteries, which store the electric power needed to power the bus. A full charge provides sufficient energy for over 250 kilometres of usage—suitable for most urban bus routes. The bus is propelled by two wheel-hub motors, each driving one set of rear wheels (left and right)—thus not requiring a full-length rear axle, gearbox, driveshaft or differential componentry.

The 20 BYD K9 buses will be registered in 2020 as SG3050Z – SG3069X. All units are based at Seletar Bus Depot, where ten 150 kW overnight charging systems (supplied by ABB) have been installed. Up to two electric buses can be connected and charged sequentially while parked at the depot, enabling all 20 buses to be fully charged and ready to run through the day within 4.5 hours.

Basic Technical Specifications
Length: 12.00m | Width: 2.55m | Height 3.50m
Electric Motor 2x BYD-TYC90A Brushless AC synchronous in-wheel motors
(also known as Permanent Magnet Synchronous Motors)
Continuous power/torque of 110 kW/400 Nm (per motor); 220 kW/800 Nm (combined)
Maximum power/torque of 150 kW/550 Nm (per motor); 300 kW/1100 Nm (combined)
Regenerative braking capabilities + Front and rear disc brakes
Battery BYD Lithium Iron Phosphate battery (Capacity 310 kWh)
Depot charger: 150 kW overnight charging system (supplied by ABB)
Plug-in CCS2 socket charging capability
Bodywork Gemilang Coachworks bodywork
‘EcoRange’ aluminum bus body
EDS LECIP Electronic Display Sign
Orange LED Matrix; Mounted on Front, Left side and Rear
PIDS LECIP OBC-VISION Passenger Information Display System
LED text displays, LCD display screens and interior speakers
Passenger Capacity 28 Seated  + 52 Standing = 80 passengers
2 Wheelchair Bays
Additional Specifications Battery Thermal Management System (BTMS)
Smart Monitoring and Diagnosing System (SMDS)
Low-voltage electricity management system with self-diagnosis
Fire suppression system in battery compartments
Masats door systems
Valeo REVO-E electric air-conditioning system (Spheros SC 600 controller)
Vogelsitze System 750/3 seats
TNT Surveillance Forward and Side collision warning system (T-FA Front Alert Camera; T-SA Side Alert Cameras)
TNT Surveillance Golden Eye Anti-Fatigue System
Hella Aglaia APS-R-PoE
Automatic Passenger Counters (Entrance & Exit doors)
USB Charging Ports
Stroller Restraint System

Gemilang Coachworks of Malaysia has previously bodied BYD K9 buses for the Hong Kong market, with 14 ordered by Transport International Holdings. Entering service in 2017, ten units were delivered to Kowloon Motor Bus and four units were delivered to Long Win Bus. In addition, it bodied 15 BYD K9 buses for Rapid Bus in Kuala Lumpur, deployed on the BRT Sunway Line, and lent its expertise towards the development of the Carbridge TORO electric bus, which is built on a BYD K9 chassis.

The BYD D9RA chassis were initially spotted by Facebook page BusLanes in May 2019 at Hong Kong port, in transit from Shanghai (China) to Port Klang (Malaysia). [Link]

Bus Display at Ulu Pandan Bus Depot

On 11 November 2019, the Yutong E12, BYD K9 (SG3060U)ST Engineering Retrofitted Electric Bus were displayed at a press event at Ulu Pandan Bus Depot. These buses would be deployed for revenue service in early 2020.

As part of LTA’s efforts to build a more inclusive public transport system, the front door of the Electric Buses procured by LTA do not feature a centre pole, to allow easier access for parents with open strollers.


The 20 BYD K9 buses would be registered as SG3050Z – SG3069X.

These buses are leased to the following operators:

  • SG3050Z, SG3060U, SG3061S, SG3062P, SG3069X (Registered on 22 Jan 2020)
    SBS Transit Ltd

Charging Infrastructure

For the overnight charging of the BYD K9 buses, ten 150 kW overnight charging systems have been installed at Seletar Bus Depot, supplied by ABB. Up to two electric buses can be connected and charged sequentially while parked at the depot, enabling all 20 buses to be fully charged and ready to run through the day within 4.5 hours.

According to ABB, smart charging solutions from ABB incorporate a future-proof and modular design, safe and reliable operation and remote service and data management, and will pave the way for greener, more sustainable public transportation in Singapore.


External Links & References:

Back to Bus Models
Back to Bus Articles

Original publish date: 28 September 2019

10 thoughts on “BYD K9 (Gemilang)

  • 12 March 2020 at 7:58 PM

    Please Deploy another 5 BYD K9s to Go-Ahead beacuse they tested SG4001J in 2016-2017.

  • 23 February 2020 at 4:49 PM

    I hope that this bus service will be up as soon as possible

  • 23 February 2020 at 4:47 PM

    I hope this Yutong E12,BYDK9 Gemeliang, ST Engineering Bus Volvo B5 and the Mercerdes Benz Citaro Hybrid will be used as SBS Transit.

    • 3 April 2020 at 4:31 PM

      10 for smrt 5 for gas or tts

  • 28 January 2020 at 8:12 AM

    135, 138, 162 and 860 are possible routes they can deploy these buses to.


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