Follow the troubleshooting section in your tool and battery manual to try and diagnose the issue.
Lithium Ion Battery Issues
Q. How can you determine if any issues with the equipment are battery-related?
Q. Troubleshooting starting problems, short battery life issues, etc.
Follow the troubleshooting section in your tool and battery manual. Find your manual and download here. Ensure the battery is fully charged and connected to the tool.