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No, the battery does not damage the battery in your iPhone 7. You can charge the case without the iPhone attached.
Sorry, there was a problem. Please try again later.1) It should not cause any issues or damage. 2) You can charge the case separately.
Sorry, there was a problem. Please try again later.I have not noticed it damages the battery to the phone itself. You can charge the case without the phone with a wireless charging pad or the cord that comes with the case. The heat is not very noticeable when you are charging the phone with the case on.
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