I have a MacBook that is a few years old. Bought it used, a couple years ago.
I use it for writing. Connect to the internet only when I need to. Works out great for this.
Lately it quit running on battery. I can run it with the charger/AC supply connected. I'm pretty sure it's the battery.
Now do I really have to open this thing up to determine what battery to buy?
MacBook, OS X Mavericks (10.9.5)