Battery For Samsung J7
BATTERY Removable Li-Ion 3000 mAh battery
Talk time Up to 18 h (3G)
Music play Up to 76 h
The Samsung Galaxy J7 comes with a solid 3,000mAh battery, that's the same capacity as the Galaxy Note5. Of course, there's no high-resolution screen to worry about and the Cortex-A53 processor cores are quite efficient.
Note that we're testing the Exynos 7580 version of the Galaxy J7 rather than the Snapdragon 615. Also, this is a dual-SIM phone.
With just one SIM card active, the J7 lasted an impressive 91 hours, essentially matching the Galaxy Note 4 and Note5. It also improves the Galaxy E7 time by quite a bit. With a second SIM active the standby power draw increases, but you still get just over three days of standby.
The 18 and a half hours of talk time were not very impressive - with this battery it could have easily been 25+. Web browsing is pretty solid at 9 hours, a couple of hours behind the last two generation of Note flagships but excellent for a midrange phone.
Finally, the video playback is highly impressive, one of the best we've tested. The screen was set at 150nits (darker than usual).