Swappable EV batteries let you “refuel” in just 100 seconds

Swappable EV batteries let you “refuel” in just 100 seconds

How CATL's Choco-SEB technology is making electric cars as fast to refuel as gasoline

by Kurt Knutsson
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Pulling into a station, swapping your electric car battery, and getting back on the road in under two minutes is now a reality. In China, CATL’s swappable EV batteries are making this possible. This innovation is transforming the way drivers think about electric vehicle charging by making it fast, easy, and as convenient as refueling with gasoline.

 

 

EV battery swapping station

Credit: CATL

 

What are swappable EV batteries?

Swappable EV batteries are modular battery packs that can be quickly exchanged instead of recharged. CATL, a global leader in battery technology, created a system called Choco-SEB that allows drivers to replace a drained battery in about 100 seconds. This makes battery swapping a realistic alternative to traditional EV charging.

Image of CATL swappable EV battery on screen at launch event

Credit: CATL

 

How CATL’s Choco-SEB battery system works

CATL’s Choco-SEB battery system is focused on speed and flexibility. It is designed to support a wide range of electric vehicles, from compact city cars to larger sedans. The system lets drivers swap batteries quickly and choose the setup that matches their needs best. With this technology, a single battery swap can deliver up to 373 miles of range, depending on the vehicle.

The Choco-SEB batteries are available in two sizes, making them adaptable for different car models. Drivers can install one, two, or even three battery blocks, depending on how much driving range they want. For compact cars, the system can provide up to 311 miles of range, while midsize vehicles can achieve as much as 373 miles per swap. This flexibility makes the Choco-SEB system a practical solution for a wide variety of drivers and travel needs.

Illustration of where swappable EV batteries are placed in a vehicle

Credit: CATL

 

CATL swappable EV batteries offer high-efficiency and safe chemistry

The battery uses a blend of lithium iron phosphate and nickel manganese cobalt. This mix offers a balance of performance and safety, with an energy density of more than 160 Wh/kg and 325 Wh/L. The first car to launch with a Choco-SEB swappable EV battery is the Changan Oshan 520. It starts at around 166,800 yuan, or roughly $23,100. The vehicle offers a 320-mile range and is already gaining traction. Changan has delivered over 1,000 units and has received more than 15,000 orders.

 

Battery swapping stations are expanding across China

CATL is actively building a network of battery swap stations across China. As of now, 34 stations are operating in Chongqing. More than 50 are expected by the end of the year.

By the end of 2025, CATL plans to have 1,000 stations across 31 cities. Each station is compact, requiring the space of just three parking spots, and can hold up to 48 swappable EV batteries.

CATL is working with major automakers including GAC, Chery, NIO, FAW, and BAIC. The company currently holds almost 29 percent of the global EV battery market. With the addition of swappable EV batteries, it is strengthening its position as a leader in the industry.

While CATL is a major force in battery technology, it is important to note that other companies, such as NIO, have established much larger battery swap networks and operational experience in China. CATL’s current swap station deployment is at an early stage compared to these established players, but its aggressive expansion plans signal a commitment to growing its footprint in this space.

EV battery swapping station

Credit: CATL

 

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Why swappable EV batteries could change the industry

Swappable EV batteries address one of the biggest challenges facing electric vehicles: long charging times. Instead of waiting 30 minutes or more, drivers can swap batteries in minutes and get back on the road with the ease of a gas-powered car.

The concept is gaining traction in Asian markets and holds promise for global expansion. In the U.S., however, challenges such as vehicle compatibility, automaker collaboration, infrastructure needs, and consumer acceptance remain significant.

Some U.S.-based pilots and partnerships, including Stellantis collaborating with Ample for a fleet in Spain, point to growing interest. Still, CATL’s Choco-SEB battery swap system has not been announced for rollout in the U.S.

While CATL is not yet the largest player in battery swapping, its technology and plans for rapid growth could help accelerate industry adoption and influence future EV strategies worldwide.

 

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Kurt’s key takeaways

CATL’s goal is to make electric vehicle ownership easier and more appealing. Swappable EV batteries give drivers the flexibility to power up without plugging in. With more stations on the way and compatibility across a wide range of cars, this system could redefine what it means to drive electric. While this technology isn’t coming to the U.S. just yet, American EV manufacturers may want to take note, as swappable battery tech could be the game-changer drivers have been waiting for.

If you could recharge your electric car in just 100 seconds, would you switch from gas to electric? What would it take to convince you to make the change? Let us know in the comments below. 

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2 comments

Rick July 13, 2025 - 6:29 am

yes but what’s the cost to change batteries. To fill a truck with 26 gals cost approximately 60$.

Reply
American Believer July 13, 2025 - 7:45 am

Toyota is building a new EV battery plant near Greensboro, NC. They shipped their first batch this month. The investment is worth $4 BILLION dollars. I hope they can adopt this same technology or they’re going to regret building this plant before they finish it.

Reply

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