How does Huawei mobile phone view battery health?

Brand model: Huawei mate40;; System: emui11.0;

1, first find the service on the desktop and click Open;

2, and then click I want to test in the service;

3. After entering a new page, click Start Detection;

After the test, you can see whether the battery is healthy. If it is healthy, there will be no optimization tips, and if it is unhealthy, it will be tested.