4 USB-A to iMac

  • Amount Charged in 30 Minutes: 26%
  • Total Time to Charge: 2 hours, 15 minutes
  • Cost: Free

Plugging your included USB-A to Lightning charger into your iMac’s USB port might yield slightly increased charging times (assuming you have an iMac lying around). But the bump in charging speed is nominal, at best. At 30 minutes, an iPhone 8 plugged into an iMac hit 26 percent. It only reached a full charge after 2 hours and 15 minutes of charging — just 15 minutes shorter than the previous methods.

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