This week Apple was granted a pair of patents that have to do with two-way charging. Owners of some Android devices will be familiar with the technology, which is also called reverse charging. For instance, some Android smartphones can charge other smartphones inductively to share battery power when needed.
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https://www.slashgear.com/new-apple-patents-show-future-macbooks-may-charge-iphones-wirelessly-06653676/
