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billy
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Begginer
Asked: 2024-08-23T16:25:17+00:00 In:

wall chargers and what to look for

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Not all chargers are the same, of course. Older usb chargers are not capable to charge newer items. Do you know the specs of a wall charger and how to determine what you are purchasing?

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  1. billy
    Begginer

    When reviewing an ad for a wall charger it was listed as:

    “Amazon Basics 36W 2-Port USB-C Wall Charger (White) $8 ”  But it’s really not 36 watt, it’s 2 ports each at 18w
    There are alot of differances in usb wall chargers, here are some spec’s so you can make a better decision

     

    Port Type

    • USB (Type-A): The standard rectangular USB port that has been around for years. It’s commonly found on older chargers and supports USB 2.0 and USB 3.0.
    • USB-C: A newer, smaller, and reversible connector that’s becoming the standard for many modern devices. It supports faster data transfer and power delivery.
    • USB (Type-A) wall chargers are suitable for older devices or when you only need to charge one or two devices at moderate speeds.
    • USB-C wall chargers offer faster charging, greater versatility, and are better suited for modern devices, especially those that require higher power levels or faster data transfer rates. If you have multiple devices or a device that supports USB Power Delivery, a USB-C charger is the better choice.

    Power Delivery (PD)

    • USB (Type-A): Typically delivers 5V at 1A to 2.4A, translating to 5W to 12W of power. Fast charging is possible with technologies like Qualcomm Quick Charge, but it’s limited compared to USB-C.
    • USB-C: Supports USB Power Delivery (PD), which allows for higher power levels. USB-C chargers can deliver up to 100W, which is enough to charge not only smartphones but also laptops. This makes USB-C more versatile for charging a wider range of devices.

    Compatibility

    • USB (Type-A): Compatible with a wide range of older devices. Many accessories and cables are available for Type-A ports, but it’s gradually being phased out.
    • USB-C: Compatible with newer devices, including smartphones, tablets, laptops, and other peripherals. USB-C is becoming the universal standard, with many manufacturers moving towards it.

    Charging Speed

    • USB (Type-A): Can support fast charging but is limited by the power delivery capabilities of the port (typically up to 12W or 18W with Quick Charge).
    • USB-C: With USB Power Delivery (PD), it can charge devices much faster, delivering up to 100W, which is sufficient for most modern smartphones, tablets, and even some laptops.