Hi,
Windows 10 may have detected your old battery, the reason why your computer kept of notifying you about the battery life. To help you disable this notification, we suggest that you follow the steps below to turn off the notifications from battery saver:
(Note: Make sure to unplug your laptop from the power source first before performing the steps below.)
- Open Settings app.
- Select System.
- Click on Notifications & actions tab.
- Scroll down and look for Battery Saver and turn off the slider.
Let us know the results.