Why a Five-Minute EV Charge Is Harder Than It Sounds
Aadhya Tibrewal, Jadetimes Staff
BYD says its latest charging system can take a compatible battery from 10% to 70% in five minutes. The bigger test is whether a driver can find that speed on an ordinary road trip.
Five minutes is about how long it takes to pull into a service station, buy a bottle of water and get back to the car. If an electric vehicle could gain enough range for the next leg of a trip in that time, charging would feel less like something you plan your day around. In March 2026, Chinese automaker BYD announced a battery and charger combination that it says can make that kind of stop possible.
The number is striking. The details behind it are more revealing. Five minutes takes the battery from 10% to 70%. BYD says reaching 97% from the same starting point takes nine minutes. Both figures are for its second-generation Blade Battery paired with its FLASH charging system. The five-minute claim describes a useful top-up under a specific setup. How far that top-up takes a driver depends on the car and how it’s driven.
What five minutes can buy you
Take a hypothetical electric car with 80 kilowatt-hours of usable battery capacity. Going from 10% to 70% adds 48 kilowatt-hours. If the car averages six kilometres per kilowatt-hour on that trip, the stop adds about 288 kilometres of driving range. Drive faster, climb into the hills or spend more energy heating the cabin, and the same top-up may take you a shorter distance. The example shows why charging time makes more sense when you ask what the driver can do with the energy afterwards.
It also shows the scale of the engineering. Adding 48 kilowatt-hours in five minutes would require an average of about 576 kilowatts going into the battery over that interval. BYD says its FLASH charger can supply up to 1,500 kilowatts through one connector. That peak figure describes the charger’s capability. The average over the session tells you how much energy actually makes it into the battery in the time you’re plugged in.
The car has a say in how fast it charges
A charger can offer more power than a car is ready to accept. The battery’s temperature, its existing level of charge and the vehicle’s design all affect the charging rate. Tesla, for example, says Supercharging speeds vary with factors including battery size and age, temperature and state of charge. Its route planner can estimate how much charge will remain when a driver reaches a station and how long a stop should take.
Temperature makes the difference easier to picture. A car that has spent the night outside in freezing weather may arrive at a charger with a cold battery. The station could be capable of delivering plenty of power while the car limits what it accepts. Some EVs prepare the battery on the way to a fast charger to help it charge more quickly on arrival. That makes the drive to the station part of the charging process, even though the driver hasn’t plugged in yet.
A busy charging station has its own problem
Imagine several drivers pulling off the highway at the same time. If four chargers each drew 1.5 megawatts directly from the grid at once, their combined draw would be six megawatts. The station has to handle that brief surge even if it spends the next hour almost empty.
BYD’s approach pairs its chargers with on-site energy storage. A station can store energy ahead of time and draw on it during a short burst of high demand. Think of it as filling a reservoir gradually so it can supply a lot of water at once. That helps explain how a station might deliver more power for a few minutes than its grid connection could supply on its own. It also raises a practical question for busy corridors. How well can the station keep up when the next wave of cars arrives before its stored energy has recovered?
The road trip is the real stopwatch
A driver counts the time from leaving the highway to getting back on it. Finding the station, waiting for a free bay, plugging in and starting the session all come before the battery adds a single kilometre. Then there’s the question of where the next reliable charger is. A five-minute stop can be enough when another station is within easy reach. On a route with few options, a driver might stay longer for the extra range.
That’s what makes the five-minute figure worth watching. A faster battery gives drivers the option to take a short stop. A well-placed, dependable charging network gives them the confidence to take it.
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