How do iphone charging cases work?

How do iphone charging cases work?

I believe that most of the cases have a connector to plug into your iPhone. You charge the case and then you can plug in the case to your iPhone and it allows the phone to access the charge.

You put the case on around the phone and it plugs into the phones 30-pin connector or Lightning connect depending on the model. Then once the iPhone runs out of battery the battery in the case will take over and charge the phone. There are some really good ones out there too that give like 2 or 3 more hours to the phone at least.

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