CATL unveiled three impressive EV battery products at its inaugural Super Tech Day on April 21: The Freevoy Dual-Power Battery; Naxtra, stated to be the world’s first mass-produced sodium-ion battery; and the second-generation Shenxing Superfast Charging Battery. The battery manufacturer also presented an integrated 24V start/stop Naxtra battery for heavy-duty trucks.
The Naxtra battery marks the start of mass production of sodium-ion batteries and includes two categories: the Naxtra passenger EV Battery and the Naxtra 24V Heavy-Duty Truck Integrated Start-Stop Battery. Both can perform across the full temperature range from -40°C to +70°C. The Naxtra passenger EV Battery retains 90% usable power at -40°C and in an extremely low state of charge with only 10% SOC remaining, it can still achieve no significant power degradation at a temperature of -40 ℃.
The passenger EV battery has an energy density of 175Wh/kg, comparable to LFP batteries. In terms of safety, the Naxtra Battery eliminates combustion-supporting factors at the material level, thus achieving a transformative breakthrough from what CATl calls “passive defense” to “intrinsic safety”.
The Naxtra 24V Heavy-Duty Truck integrated start-stop battery boasts over eight years of service life. It reduces total lifecycle costs by 61% compared to traditional lead-acid batteries and is stated to offer unique advantages including deep discharge across the entire capacity, one-click starting at -40°C, and the ability to start after being idle for a year. Compared to lead-acid batteries, it is more efficient, eco-friendly and economical, driving commercial vehicles into a lead-free era where vehicle and battery ages as one.
The Freevoy Dual-Power Battery
The Freevoy Dual-Power battery integrates CATL’s dual-power architecture and self-forming anode technology. The dual-power architecture means that the battery pack has two “independent energy zones,” which enables five dual functions – dual high-voltage, dual low-voltage, dual structure, dual thermal management and dual thermal runaway safety protection – ensuring the continuity, stability and safety of power output. This dual-power design and innovative integration of software will provide a more stable and reliable power supply for vehicles in the upcoming L3 and L4 autonomous driving era.
The “self-forming anode technology” represents a disruptive breakthrough at the atomic level, meaning the volumetric energy density of the battery can increase by 60% and the gravimetric energy density by 50%. This also means that more power can be engineered into the same battery pack space, supporting longer range. This technology can be flexibly paired with various material systems, and when combined with NCM systems, the energy density can be increased to over 1,000Wh/L. 
The “dual-electric range extension” technology pioneered by the Freevoy Dual-Power Battery can intuitively regulate the allocation strategy of two energy zones based on the vehicle’s driving status and user’s driving habits.
The main energy zone of the dual-power battery can use different chemical systems of battery cells according to the user’s driving habits and scenarios, meeting daily driving needs. The extended range energy zone can adopt high specific energy self-forming anode technology to provide greater capacity to meet users’ long-distance travel needs.
Three dual-power solutions across different chemical systems were released. A Sodium-LFP Dual-Power Battery combining Naxtra with a LFP self-forming anode battery, fully utilizing the low-temperature performance of sodium-ion technology to work well in cold conditions while delivering extended range.
An LFP-LFP Dual-Power Battery that pairs the second-generation Shenxing Superfast Charging Battery with the LFP self-forming anode battery, which is stated to achieve 1,000km of pure electric range in sedans with a 3m wheelbase.
And an NCM-LFP/NCM-NCM Dual-Power Battery, combining an NCM battery with an LFP self-forming anode battery, achieving a peak charging rate of 12C for the NCM battery in the main energy zone, providing over 1Mw of power. Even when SOC drops to 20%, it can still output over 600KW of power. The upgraded version of the product, consisting of an NCM battery and an NCM self-forming anode battery enables a capacity of over 180kWh in sedans with a 3m wheelbase, breaking through the 1,500km pure electric range barrier.
Second-generation Shenxing Superfast Charging Battery
CATL’s second-generation Shenxing Superfast Charging Battery is stated to be the world’s first LFP battery featuring both an 800km range and a 12C peak charging rate. With a peak charging power of 1.3MW, it achieves 2.5km of range per second of charging. In low-temperature environments of -10°C, it can charge from 5% to 80% SOC in just 15 minutes. Even in a low-charge state, it maintains an output power of 830kW. In the demanding environment of -10°C and with low charge, it can still easily meet the power requirements for 0-100km/h acceleration. 
