The role of batteries in the eletric vehicle (EV) revolution cannot be overstated. Early EVs relied on lead-acid batteries, which, despite being rechargeable, were heavy and inefficient. By the 1990s and 2000s, NiMH batteries powered hybrid vehicles like the Toyota Prius, but they lacked the energy density required for full EVs.
The breakthrough came with Li-ion batteries in the 2000s, which enabled lightweight, high-capacity energy storage. Tesla’s introduction of the Roadster in 2008 demonstrated that EVs could be both high-performance and long-range. Since then, battery technology has been at the centre of EV advancements, with manufacturers focusing on enhancing efficiency, range, and sustainability.
China has emerged as a leader in EV battery production, with companies like CATL pioneering lithium iron phosphate (LFP) batteries, known for their safety and cost-effectiveness. BYD has developed the Blade Battery, which enhances safety and longevity, while NIO has introduced battery swap technology, allowing for rapid battery replacement.
Other global developments include solid-state battery research by Toyota and QuantumScape, as well as Tesla’s 4680 battery cells, which promise improved efficiency and longevity.