I’ve seen mixed reviews on how the Smart Battery Case works with your phone. One side says if the phones internal battery is at 100% then it will bypass the phones battery and just use the battery inside the case. This means theoretically if you always top off the battery in the case then the iPhone will never use the internal battery and will thus preserve it better long term. The other side says the case basically just tops off the internal battery, thus constantly “charging” the internal battery which will drain the battery faster. Which is it?!?!!!

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