The owner of a Porsche 911 GT3 Touring 992.2 made an unusual discovery while discussing the battery of this sports car online.
On the American forum Rennlist, the owner posted photos of a 12-volt battery that, according to him, was installed at the factory in his car. The label indicated that the component responsible for powering the sportscar's electrical systems was manufactured by BYD in China.
Porsche has not officially confirmed the supplier of this part, but the company stated that the new GT3 is equipped with a standard lithium-ion battery with a capacity of 40 Ah, which is approximately 4 kg lighter than the previous solution.
The images were published by the owner in a thread he created to ask if other owners had noticed a weak battery. He noted that this unit was manufactured on June 26, 2025.
In another forum discussion, the owner of the GT3 Touring mentioned that the battery label on his car bore the name FinDreams, a subsidiary of BYD. The Chinese manufacturer could be one of several contractors hired by Porsche to supply this component.
The 4 kg saving is significant for a car like the GT3, which is a more track-oriented version of the 911. This car is equipped with a 4.0-liter, 510 hp, and 45.9 kg·m torque atmospheric six-cylinder Boxer engine. The Touring variant lacks the large rear spoiler for a more restrained appearance, while retaining all the mechanics.
If confirmed, Chinese sourcing would not be new for this component. One forum participant mentioned that Porsche previously used lithium batteries with cells from A123 Systems, an American company controlled since 2013 by the Chinese concern Wanxiang.
In the case of BYD, the origin helps explain the choice. The company was founded in 1995 as a battery manufacturer and only began engaging in the automotive business in 2003. Today, it is the world's largest electric vehicle manufacturer.
This discovery comes during a challenging period for Porsche in the Chinese market. In the first half of 2026, the brand delivered 14,501 vehicles in the country, which is 32% less compared to the same period last year. The manufacturer attributes this result to a complex market situation and a strategy focused on prioritizing profitability over sales volume.
Globally, Porsche deliveries decreased by 16% in the first half, totaling 122,306 units. However, the 911 model was an exception: the line showed a growth of 19%, delivering 30,534 units, supported by versions such as the GTS, Turbo, and models from the GT division to which the GT3 belongs.