I found this funny, because hadn’t rebooted my system for more than a week (I always use Sleep) it recommended I restarted.
What a great user experience! (and not really true since the Windows 98 days).
I had a dig around to try and find out what was causing this popup so I could stop it, and found a setting to only charge the battery up to 100%
Interesting. Do any battery experts know how doing this improves battery life?