Another 24-hour cafe is Mr. Parks which can be located near Robinson’s Place Manila. There is free WiFi and the pleasant interior can really motivate you to be productive. There are also delicious pastries and drinks that you can buy ranging from P50 to P170.
Unfortunately, outlets are not available in this cafe so you’re gonna have to make the most of your battery. But if all you have is a book on hand, needing a good place to study then this might be perfect for you.