Do NOT Use These With Your iPhone

Photographed by Erin Yamagata.
Before you buy a random spare charger for your Apple device, consider this advice: Be cautious. According to a study conducted by UL and cited by Chartered Trading Standards Institute, a U.K.-based consumer protection organization, 99% of counterfeit Apple chargers bought online fail a basic safety test.
In the study, investigators bought 400 Apple chargers on the internet from different retailers around the world. Each charger was put through a basic test that would be required for the chargers if they were to be sold in brick-and-mortar shops.

In the test, high voltages were applied to the chargers. The authors wrote, "If the current is above the threshold, the unit is determined to have insufficient isolation with potential for electric shock."

Out of 400 chargers, 397 failed.

This study comes just a few weeks after Apple conducted its own study on third-party power accessories. That study estimated that 90% of Apple chargers and cables sold through Amazon were unsafe. This led to a lawsuit from Apple, which was filed in October.

The lesson here: Be careful where you get your chargers. They might be cheaper, but they may not be safer.
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