For years, the electric car industry has been trying to convince drivers that stopping for 20, 30 or even 40 minutes to recharge is not really an inconvenience.
BYD has decided to take a different approach.
Instead of asking people to change their expectations, the Chinese manufacturer is developing electric cars that could be charged in roughly the same time it takes to fill a petrol tank, visit the loo and buy a coffee.
Its new Flash Charging system can take a compatible electric car from 10% to 70% in around five minutes, or from 10% to 97% in just nine minutes.
More importantly, this is no longer a laboratory demonstration or an ambitious promise for some distant point in the future. BYD has now demonstrated the technology here in the UK and is preparing to build a network of Flash Charging stations across Britain and Europe.
This could be one of the most important developments in the electric car market so far.
BYD demonstrates five-minute charging in the UK
The first UK demonstration of BYD’s Flash Charging technology took place at the company’s headquarters in Uxbridge.
A Denza Z9GT, the flagship model from BYD’s new premium brand, was connected to a Flash Charger capable of delivering up to 1,500kW through a single connector.
During the independent demonstration witnessed by automotive journalists, the Z9GT’s enormous 122kWh battery charged from 10% to 97% in eight minutes and 58 seconds.
After five minutes, the battery had reached 66%. That was slightly below BYD’s headline target of 70%, but the car was already showing a predicted range of approximately 249 miles. By the end of the nine-minute session, its indicated range had risen to 363 miles.
To put that into perspective, five minutes of charging could provide enough range to travel from London to Manchester without another stop.
BYD says the production version of the system can add around 223 miles of range in five minutes or 323 miles in nine minutes, based on the Z9GT’s official 372-mile WLTP range.
That is not just faster than most electric cars currently on sale. It changes the entire experience of using a public charger.
Ready in five, full in nine
BYD has created the slogan “Ready in 5, Full in 9, Cold Add 3” to explain the technology.
In normal conditions, a compatible car can charge from 10% to 70% in approximately five minutes and from 10% to 97% in nine minutes.
Even at minus 30 degrees Celsius, BYD claims the battery can charge from 20% to 97% in 12 minutes. Cold weather normally has a significant effect on EV charging speeds, so this could be almost as important as the headline five-minute figure.
It is worth being clear that this is not a completely full battery in five minutes. However, reaching around 70% in the time it takes to refuel a petrol car is arguably more useful than waiting several more minutes to reach 100%.
Most drivers stopping during a long journey simply want enough energy to continue. They do not necessarily need to fill the battery completely.
The charger is only half of the story
Delivering 1,500kW is an impressive achievement, but the Flash Charger cannot perform this trick with every electric car.
The other crucial component is BYD’s second-generation Blade Battery.
The Blade Battery uses lithium iron phosphate chemistry, commonly known as LFP. For its second generation, BYD says it has improved the movement of lithium ions through the battery, helping it accept energy faster while producing less heat.
This matters because heat is one of the main factors limiting how quickly an electric car battery can charge.
For now, the Denza Z9GT will be the first model arriving in Britain capable of taking full advantage of Flash Charging. Other cars using the latest Blade Battery technology are expected to follow, including more affordable BYD models over time.
Other electric cars should still be able to use the Flash Charging stations through a standard CCS connection, but they will only draw the maximum charging speed supported by their own battery and electrical system.
Plugging an existing electric car into a 1,500kW charger will not suddenly make it charge at 1,500kW.
How can the electricity grid cope?
Installing chargers capable of delivering this much power presents an obvious problem.
A row of 1,500kW chargers connected directly to the electricity grid could require an enormous and expensive grid connection. In many parts of Britain, securing that connection can take years.
BYD’s solution is to install large batteries alongside the charging stations.
These stationary batteries can be replenished gradually from the grid, including overnight when electricity demand may be lower. They can then release that stored energy rapidly when a car arrives.
BYD says the supporting battery storage can be supplied by connections ranging from around 100kW to 560kW, depending on the site and expected demand.
This does not remove every infrastructure challenge, but it could make Flash Chargers much easier to install than their headline power output suggests.
Hundreds of Flash Chargers are planned for Britain
BYD says it plans to place Flash Chargers at Denza dealerships and other locations around the UK.
Its official UK announcement stated that 300 chargers were planned by the end of 2026. Other reports have suggested the initial British network may be completed during 2027, so the precise delivery schedule is something worth watching.
Across Europe, BYD is reportedly planning around 3,000 Flash Charging stations by 2027 as part of an investment approaching €2 billion.
Potential locations include BYD and Denza dealerships, motorway services, existing charging hubs, petrol stations, supermarkets and retail parks.
BYD is also understood to be targeting a charging price of around 50p per kWh for its own customers. That would be noticeably cheaper than many of today’s ultra-rapid public charging networks, where prices can approach or exceed 80p per kWh.
Delivering the network at the proposed scale and price will be every bit as important as the performance of the chargers themselves.
Dealers believe this could be a game changer
The motor trade appears to recognise the potential.
Research from the Startline Used Car Tracker found that 90% of the dealers questioned described BYD’s technology as a potential game changer for electric cars.
Around 78% said it could make charging an EV as easy as fuelling a petrol or diesel car, while 53% believed public chargers could begin operating more like traditional fuel pumps. Drivers would queue, charge quickly and move on.
Perhaps most significantly, 31% said Flash Charging could make electric cars more accessible to people who cannot install a charger at home. Meanwhile, 87% expected competing manufacturers to develop similar systems.
The research was based on responses from 60 dealers and 300 consumers, so it is a relatively small snapshot of the market. Even so, the strength of the response shows how significant charging time remains in the conversation around EV adoption.
The biggest benefit may be for people without driveways
As an electric car driver, most of my charging is completed while the car is parked rather than while I am waiting beside it.
For anyone with a driveway and a home charger, Flash Charging is unlikely to replace inexpensive overnight electricity. Charging at home will almost certainly remain cheaper and more convenient for everyday driving.
The real transformation could be for drivers living in flats, apartments and terraced houses.
Without access to home charging, owning an electric car can mean regularly visiting a public charger and waiting while the battery fills. Reducing that visit to five or ten minutes would make the experience much closer to running a petrol or diesel car.
It could also improve the capacity of charging locations. A charger serving several cars every hour is much more useful than one occupied by the same vehicle for 40 minutes.
The Denza Z9GT will introduce the technology
Flash Charging will make its UK debut alongside the Denza Z9GT, a large premium shooting brake designed to compete with cars such as the Porsche Taycan Sport Turismo.
The electric version uses a 122.49kWh battery and offers an official WLTP range of up to 372 miles in its initial three-motor specification.
With up to 1,156PS, it can accelerate from 0 to 62mph in 2.7 seconds and reach 168mph. A rear-wheel-drive version offering a longer range of up to 800 kilometres, or approximately 497 miles, is also expected to join the European line-up.
The Z9GT will be an expensive and relatively exclusive way to introduce the technology, but that is often how new automotive innovations begin.
Anti-lock brakes, airbags, adaptive cruise control and rapid charging all appeared on expensive cars before spreading into more affordable models.
The question is how quickly BYD can bring its second-generation Blade Battery and Flash Charging capability into mainstream cars.
Has BYD finally removed the biggest barrier to EV ownership?
Five-minute charging will not solve every electric car problem overnight.
The chargers still need to be built. Planning permission needs to be secured. Pricing must remain competitive, and drivers will need cars capable of accepting these extraordinary speeds.
There will also be legitimate questions about long-term battery health, maintenance costs and how the stations perform when several vehicles want to charge at the same time.
But the technology has now worked in a real British demonstration. It is being installed in production cars, and BYD appears prepared to invest heavily in the infrastructure needed to support it.
That makes this far more significant than another impressive charging statistic.
If BYD can deliver hundreds of reliable Flash Chargers across Britain, bring the technology into affordable cars and keep charging prices sensible, the conversation around electric vehicles could change very quickly.
Drivers may no longer ask why an electric car takes longer to recharge than a petrol car takes to refuel.
They may simply expect every manufacturer to catch up.
