LG G4 battery life test: nothing's changed since the G3

There is the inevitable weak spot, though, which, just as with its predecessor, appears to be the battery life. The LG G4 lasted a tad north of six hours of screen-on time in our standardized battery benchmark test, which falls a bit short of the LG G3 even, let alone battery life monsters like the Sony Xperia Z3. Granted, it is not that far off from the direct competitors, like the Galaxy S6, the iPhone 6 Plus, or the HTC One M9, but this only comes to show that we don't have any significant gains in battery life with the flagship crop so far.
On the charging time front, the G4 delivered a bit over two hours for a full top-up with the supplied LG charger. This puts it in line with most other flagships, save for the Galaxy S6, which charges blazingly fast. All in all, you will likely have to juice up the G4 at the end of each day with normal usage, as is typical. Thus, it is a wise decision to create it with a swappable battery, so you can carry a quick spare with you, if you are leaving for a weekend away from a charger.
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