Checking Battery Life

1. First, get the "Battery Life" added to the Shortcuts App. On the iPhone, go to "Privacy – Analytics & Improvements" and enable "Share iPhone Analytics".2. Once enabled, the iPhone will store system logs about battery information. It takes a few days for logs to appear after the first time enabling this option.

3. Open the latest log file, click the "Share" button in the upper right corner, select "Save to file", then scroll down to find and click [Battery Life].