Yes, there are publicly available datasets that include battery cycle life data at subzero temperatures:

These datasets are instrumental for researchers and engineers aiming to analyze and model battery performance in cold environments.

• ResearchGate: This platform hosts many research papers, including some that focus on battery aging at low temperatures. You can search for specific keywords like "battery cycle life," "subzero temperature," or "lithium-ion battery aging."
• Google Scholar: This is another excellent resource for finding academic papers. You can use similar keywords to find relevant research.
• University Repositories: Many universities have online repositories where researchers share their datasets. You can try searching for specific universities or research groups known for battery research.

2. Battery Testing Laboratories and Manufacturers:

• Battery Testing Laboratories: These laboratories often conduct extensive testing on batteries under various conditions, including low temperatures. Some may have publicly available data or be willing to share data under specific agreements.
• Battery Manufacturers: Some manufacturers may release technical data sheets or white papers that include information on battery performance at low temperatures. However, this data is often proprietary and not publicly accessible.

3. Data from Electric Vehicle Owners:

• Third-Party Apps and Services: Some third-party apps and services track the performance of electric vehicles, including battery degradation. While this data may not be as precise as laboratory-controlled tests, it can provide real-world insights into battery performance at low temperatures.