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If I charge my iPhone using MacBook USB, while the Macbook is charging, will that affect battery life negatively?

If I charge my iPhone using a MacBook USB port while the MacBook is charging, will that affect battery life (of either the MacBook or the phone) negatively? I would think not, since the battery is ...
user1657391's user avatar
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1 answer
664 views

Will 14.5 v @ 2.0 Amps harm my MacBook 12

I'd like to charge my MacBook 12 using my PowerBank. I have a PowerBank with adjustable voltage control it has USB output too. Though when I use USB output it draws only 0.5A @ 4.75V on average and ...
Lu4's user avatar
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