I used to be able to charge my iPhone 7 Plus more than twice using my Anker Astro powerbank. My 11 Pro Max, on the other hand, sucks the whole thing down almost completely with one charge during this test I just did.
Not only do the new phones have far larger batteries than before, but they draw more current charging, too; the powerbank and phone both got very warm during charging, much warmer than my 7 Plus used to. This might be a problem if you shove them both in your pocket.
So if you're a heavy user who relies on powerbanks, you may have to upgrade them. Battery life is a lot better so you may not have to rely on them as much, but I know people who burn power like crazy when traveling and also Pokemon Go players.
Not only do the new phones have far larger batteries than before, but they draw more current charging, too; the powerbank and phone both got very warm during charging, much warmer than my 7 Plus used to. This might be a problem if you shove them both in your pocket.
So if you're a heavy user who relies on powerbanks, you may have to upgrade them. Battery life is a lot better so you may not have to rely on them as much, but I know people who burn power like crazy when traveling and also Pokemon Go players.