- (Edited)
Here is a Battery Widget for Nothing Phones made using KWGT. You will need KWGT Pro for this widget to work. You can touch on the left side of the Graph to switch between line graph and battery level progress. While in Line graph, touch the right side to change the interval. Clicking on battery will trigger a tasker task which you may disable.
Download
You can download the Widget from Battery folder in my GitHub Page (https://github.com/rjwarrier/KWGT-Widgets). Look for Battery_Ver2 File.
How to Apply
Create a 2X2 KWGT Widget and then import the file. You may have to adjust size according to your display dimensions.