Chargers: Amps and Wattage

Written By Angela Tayco

January 2023

If you're looking for a charger for your phone or other electronic device, you may have noticed that some chargers have a higher amp rating or wattage than others. But what do these terms mean, and why do they matter?

First, it's important to understand the difference between amps and wattage:

  • Amps (or amperes) measure the flow of electrical current. A higher amp rating means that the charger can deliver more current.

  • Wattage measures the amount of power being used. It's calculated by multiplying the voltage (in volts) by the current (in amps). A higher wattage rating means that the charger can deliver more power.

    • Standard wattages include:

      • Apple iPhone: 20W; fast charging compatible: 30W

      • Samsung Note: 15W; fast charging compatible: 25W

      • Google Pixel: 20W; fast charging compatible: 23W

So why does this matter when you're choosing a charger? A charger with a higher amp or wattage rating may be able to charge your device more quickly. However, it's important to make sure that the charger you choose is compatible with your device. Using a charger with a higher wattage rating than your device can handle may not charge your device at all, or may even damage it.

To ensure that you're using the right charger for your device, it's best to use the charger that came with your device or one that is specifically designed for that model type. This will help ensure that your device charges safely and efficiently.

So the next time you go shopping for a charger, you'll want to consider both the amp rating and wattage. While a higher rating may be able to charge your device more quickly, it's important to make sure that the charger is compatible with your exact device to avoid any problems.

When in doubt, reach out to Nick at Phone Guy Repairs for any of your phone and tablet needs!

Angela Tayco
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