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Can I use a Samsung watch charger to charge my phone?

Published in Charging Compatibility 1 min read

No, you should not rely on a Samsung watch charger to charge your phone.

Here's why:

  • Battery Capacity Mismatch: The battery capacity of a Samsung smartwatch is significantly smaller than that of a smartphone. According to research, a watch battery is about 1/15th the size of a phone battery.
  • Inefficient Charging: Using a watch charger for your phone would be extremely inefficient. You might only get around 10 minutes of charge due to efficiency losses, as stated in the provided reference.
  • Low Power Output: Samsung watch chargers are designed to deliver a low amount of power, sufficient only for the small battery in the watch. Trying to charge a phone would result in "trickle charging," which is very slow and impractical.

In summary, while technically you might be able to get a tiny bit of charge into your phone from a Samsung watch charger, it's not a feasible or recommended solution. It's slow, inefficient, and not designed for that purpose.

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