Battery cases safe for iPhones?

The iPhone 7's battery barely lasts a whole day so I am looking for a battery case to extend the juice just a little. The ones on Amazon look really nice and promise up to 4000mah.


Are non-Apple battery cases safe (i.e. not the case sold by Apple)? What is the difference between non-Apple and the Apple battery case? And will they potentially damage the phone?


Any technical or anecdotal answer is appreciated.


Thanks

iPhone 7, iOS 10.3.1

Posted on Jun 2, 2017 7:18 PM

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Battery cases safe for iPhones?

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