[Bug] Separate battery power draw/graph updates

The update interval is set to 2 seconds, and both the power draw metric and the graph adhere to the set update interval. However, they are not interconnected because they appear to start their updates at different times. 

For a better UX, I think it would be better to update them both at the same time.

For example:

https://github.com/user-attachments/assets/353a59c1-e239-41c7-8103-01aa07656b95