CATL Unveils Revolutionary Electric Bus Batteries: Aiming for 1 Million Miles and Megawatt Charging

Chinese energy storage giant CATL has introduced a robust battery system for electric buses, engineered to withstand the demands of urban transportation.

At the IAA Transportation 2024 event in Germany, CATL unveiled their Tectrans Bus Edition battery pack, specifically crafted for long-haul passenger buses. This pack boasts an energy density of 175 Wh/kg, surpassing the energy density of other LFP bus batteries on the market.

CATL has unveiled an advanced Tectrans battery pack designed for trucks and buses, boasting an extended lifespan of 15 years, which is a 20% increase owing to technological advancements, or capable of covering 1.5 million kilometers (approximately one million miles). The announcement was made by Aleksej Krükov, CATL's lead engineer for international markets, during a Monday expo, highlighting that the warranty is comprehensive enough to span the entire lifespan of the vehicle. Additionally, a superior Long Life Edition is available, promising a 15-year lifespan or a remarkable 2.8 million kilometers (1.74 million miles), and includes the option for battery replacement.

At the same time, the ability to charge rapidly is also a crucial feature of these devices. In its Superfast Charging Edition, CATL boasts that its products can reach a 70% charge in merely 15 minutes—an achievement that would necessitate megawatt-level charging capabilities for fleet managers.

CATL's Tectrans Extended Lifespan Edition LFP Battery for Electric Buses

CATL's Tectrans Rapid-Charge Version LFP Battery for Electric Buses

At an exhibition, CATL revealed that discussions are ongoing with 13 automakers to potentially incorporate the Tectrans Bus Edition battery into as many as 80 different vehicle models, reports CnEVPost. However, it remains uncertain whether any of these models will be available for purchase beyond the Chinese market.

The latest battery packs have a capacity of up to 600 kilowatt-hours. They feature an advanced cathode design with high press density, which contributes to a 22% boost in the amount of energy stored per unit of volume. Additionally, in the Superfast charging version, CATL has made efforts to maintain consistent temperatures throughout the battery pack.

The company that produces batteries sees an extensive market opportunity, considering the numerous businesses globally that manufacture and market electric buses. Within the U.S., Chinese company BYD is known for its significant production of electric buses, alongside niche companies such as Proterra and traditional makers of vehicles with internal combustion engines. Even Mercedes-Benz has ventured into constructing buses equipped with solid-state batteries, pioneering the implementation of this technology in a commercially available vehicle.

Battery pack for buses by CATL Tectrans

CATL, a key force in the electric vehicle battery market for passenger cars, has innovated with its cell-to-pack technology, which it states can offer a boost in power compared to traditional battery packs. Currently, the company is shifting its attention to the commercial vehicle sector under its Tectrans line, introduced in July. This launch featured two battery types for commercial trucks: one designed for extended distance and another engineered for rapid charging, reportedly reaching 60% charge in just 12 minutes, as per CnEVPost.

Although electric vehicles often steal the spotlight, electric trucks and buses play a crucial role in cutting down emissions. Research from 2021 suggests that transitioning to electric trucks and buses could prevent 57,000 deaths by 2050 due to a decrease in air pollution and related health issues.

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