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So I replaced my iPhone 6 Plus battery 3 days ago and the Battery health Maximum capacity shows still the 64% which I saw before and it also shows that it is significantly degraded now. I tried restoring through iTunes , draining the battery to 0 and then charging it to 100 but had no luck.
Because you do indeed have a computer capable of running macOS, let’s do some testing of the battery. Complete the guide below. Be sure to upload an image of the coconutBattery window to your existing question! How to test an iPhone’s Battery Adding images to an existing question
