I've noticed over the past month or so that my batter doesn't last nearly as long as it originally did. I use it for light browsing, email and YouTube every so often. I'm using Safari. I checked the battery icon and saw that Dropbox was listed as an app using significant energy and have uninstalled it but the battery still drains really quickly. I keep the software updated and it is now on Big Sur 11.3. Is anyone else having these issues?