Hi Mike S. Avelar,
Thank you for reaching Microsoft Community.
For us to better understand the issue and find what may have caused this, I’d like to ask a few questions:
- Whenever the pop up notification comes up, what was the battery level percentage of the device?
- Is the device always connected to its power supply?
- Is there a heart icon that appears over the battery icon when the notification comes up?
For the Smart Charging, this is a feature that helps protect your Surface battery against conditions that may accelerate battery deterioration or lead to expansion. It's always active and turns on automatically when it detects your device is plugged in for prolonged periods or used at elevated temperatures. See: Smart charging on Surface (microsoft.com) for more details.
Also, please try running these steps on your Surface Pro 8 then observe if the notification still comes up:
1: Run Surface Diagnostic Toolkit
See: Fix common Surface problems using the Surface Diagnostic Toolkit (microsoft.com)
2: Check for Windows Update
Go to Windows Settings > Update & Security and select Check for updates
Make sure all updates need are installed including Optional updates
3: Update drivers and firmware
Check what is the current OS Build of your Windows version by going to Settings > System > About.
Go to Download driver and firmware for Surface, choose Surface Pro
Then click the link next to Surface Pro 8 then click Download on the next page.
Choose the .msi file that matches your current OS Build and click Next.
After downloading, run and install the .msi then Restart.
4: Run System File Checker Tool
See: Using System File Checker in Windows (microsoft.com)
Kind regards,
Marrion