These solid-state batteries utilize a solid electrolyte, offering advantages such as increased energy density, reduced weight, and improved safety compared to traditional lithium-ion batteries.

Electric vehicles, including those equipped with solid-state batteries, are notably more efficient than traditional gas-powered vehicles, converting up to 91% of battery energy into motion.

The ongoing testing of the i7 prototype will assess battery performance under real-world conditions, focusing on aspects like cell expansion during charging and temperature management.

As of 2025, the BMW i7 is priced just over $100,000 and has garnered praise for its luxury features, reflecting the brand's commitment to high-quality electric vehicles.

In addition to developing new battery technology, BMW is also focusing on advanced battery recycling to conserve resources and reduce costs, while offering upgrades for older i3 models.

Martin Schuster, vice president of BMW Group, highlighted the company's dedication to innovation and collaboration in battery technology as a key driver of their electric vehicle strategy.

John Van Scoter, CEO of Solid Power, expressed pride in the partnership's achievement of demonstrating solid-state battery cells in an actual vehicle, showcasing the potential of this technology.

Despite the current high manufacturing costs associated with solid-state batteries, ongoing research aims to make production more efficient and cost-effective.

The i7 prototype's design allows it to store more power without increasing weight, thereby enhancing its overall range and efficiency.

Solid-state batteries promise not only higher energy density and lighter weight but also faster charging capabilities, significantly reducing the risk of short circuits and overheating.

BMW is making strides in electric vehicle development by testing solid-state battery technology in its i7 prototype, marking a significant advancement in the EV sector.

The collaboration between BMW and Solid Power, which began in 2016 and intensified in 2022, has led to the introduction of all-solid-state battery technology for real-world testing in the i7.