If you have a MacBook Pro or a MacBook Air, running out of battery power is always an issue. You want to know how much power you have left, you wonder how long it will be before your laptop is charged. Given that, what would you rather see in the menu bar:
Of course you want to see the percentage. And it’s easy to do– just click on the battery and choose “Show Percentage” from the menu that drops down. (Yes, that’s a menu– not just an indictor. Who knew?)
Bonus: that’s a pretty handy menu. It shows you how long it will be before your laptop’s battery is completely charged, and it shows you which apps are draining it.