Porsche Reveals Battery Secrets That Make The Taycan Go Further And Charge Faster

• Porsche usually under-promises and over-delivers when it comes to the driving range of its electric vehicles.
• The Taycan offers impressive real-world range and is among the fastest-charging EVs in the U.S.
• After issues on early model year Taycan batteries, the latest version packs some clever engineering.

If you’re a driving enthusiast and an electric vehicle-lover, there are few cars out there that match the panache of a Porsche Taycan. In addition to being one of the best driving EVs, the sedan also consistently outperforms its own EPA range estimates in independent tests and is one of the fastest-charging vehicles outside of China. 

For model year 2025, Porsche gave the Taycan a huge upgrade with more range and faster charging. Porsche attributed those improvements to a larger battery and efficiency gains, but it has now spilled some of the secrets as to how it made one of the nicest EVs out there even better.

For starters, the Taycan’s range increased from a maximum of 246 miles for model year 2024 to more than 300 miles for the current model year. Its peak charging rate also increased from 270 kilowatts to 320 kW, reducing the 10-80% charging time by roughly 3.5 minutes when plugged into a fast enough DC fast charger. Behind the scenes, Porsche made a raft of changes to make all of that possible.

The automaker said in a press release on Tuesday that it had improved the Taycan’s thermal management. The cell modules now use passive cooling, which is basically cooling that doesn’t rely on extra pumps or moving parts. Porsche also redesigned the cooling plate that can pull heat away much faster, from 6 kilowatts before to 10 kW now. That means the battery can handle high temperatures more reliably without overheating.

To boost charging speeds, Porsche added new bus bars—thick metal strips that move current through the pack—allowing more electricity to flow at once. As a result, the 10-80% fast-charging time dropped from 21.5 minutes to 18 minutes. The minimum battery temperature for fast charging also fell from 77 degrees Fahrenheit (25 degrees Celsius) to 59F (15C), which means drivers in colder regions can start fast charging sooner and save a few extra minutes while the battery preconditions.

That’s not it. In the 2025 Taycan, the gross battery capacity increased from 93.4 kilowatt-hours to 105 kWh for the Performance Battery Plus. Despite the increase in capacity, the weight of the pack actually dropped from 1,397 pounds (634 kilograms) to 1,377 pounds (625 kg). That’s generally the direction automakers and battery companies are headed in, trying to cram more energy into smaller batteries with innovations in cell chemistry and packaging.

Still, Porsche’s battery journey has not been smooth. Last year, Porsche recalled more than 27,000 Taycans because of a manufacturing issue at LG Energy Solution’s Poland factory, which could increase the risk of internal short circuits. At the time, owners of the affected vehicles were advised to limit charging to 80% and eventually got free replacements.

Porsche said more work went into improving the reliability and durability of its batteries. Even though its customers only fast charge only about 15% of the time, the carmaker conducted stress tests in 50% of all charging cycles, in temperatures up to 100C (212F) at simulated distances up to 300,000 kilometers (186,000 miles). It also conducted one-meter water immersion tests as well as violent side-impact tests, which the automaker claims did not result in any battery deformation. 

The real-world results of all this battery engineering are pretty impressive. The base rear-wheel-drive Taycan with the 105 kWh Performance Battery Plus went 367 miles in Out Of Spec’s 70 miles per hour highway range test, beating its 318-mile EPA estimate. And in InsideEVs’ charging test early this year, the Taycan Cross Turismo went from 15-70% in just 12 minutes, holding charging rates of over 200 kilowatts for most of the time.

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