I just did this after dropping my Nexus 7 and experiencing the screen flicker.
Take the back cover off as described here
Nexus 7 Battery Replacement
Ensure the battery plug is connected well. Straighten the battery back up. Worked perfectly.
Once they have, you'll be able to view a graph of their reputation gained over time.
Here's a preview of what the graph will look like:
No reputation gained yet.