Here are some tips I use to optimize battery life on my MacBook Pro. Being aware of energy hogging apps (all browsers) and pausing them can extend your battery life to what Apple advertises.
- Open Activity Monitor and switch to the Energy pane. This will tell you who the big offenders are. Chrome is a notorious energy hog, but Safari would be #1 too if you're using it to do a lot of browsing. If there's anything else in there which isn't obvious (like video players, bitcoin miners ;) then you may want to shut them down while you're on battery power. You can also get a summary ...