The Samsung  Galaxy J7 Sky Pro  professional is meant to face up to long hours of use. aboard could be a long-lived 3300mAh battery. whereas most up-to-date smartphones square measure hold the non-removable battery stance, the battery on the Galaxy J7 Sky professional is definitely removable. this enables you to simply swap it with another full battery once it runs out. whereas that's the case, the massive battery won’t run out that simply. It will simply provide you with a full day of medium to intensive use. it's rated to offer a chat time of up to thirty one hours and a standby time of up to twenty two days. In our tests, it gave up once regarding half-dozen hours of enjoying a iteration video at full brightness. In traditional usage, I had regarding half-hour of juice left to use for the evening. Samsung has additionally enforced power optimisation mechanism to confirm the battery provides you additional onscreen time.