A USB‑C charging brick is a wall power adapter that converts AC outlet power into safe DC power for your devices via a USB‑C port. Pair it with a compatible USB‑C cable to charge phones, tablets, earbuds, and even some laptops.

• Wattage (W): Indicates potential charging speed. Higher W can support larger devices.
• Charging standards: Look for USB Power Delivery (PD) and, for some devices, PPS.
• Design & tech: Options include single or multi‑port, foldable plugs, and efficient GaN components.
• Certification: USB‑IF certification can signal standards compliance.

Note: It’s an adapter, not a battery pack, so it needs a wall outlet. Choosing specs that align with your device can help you get a smoother experience.

Size varies for a few practical reasons:

• Power output: Chargers that deliver higher wattage need larger components and thermal management, which can add bulk.
• More ports: Multi‑port bricks pack extra circuitry and share power across outputs, increasing space needs.
• Heat and safety: Venting and internal spacing help manage heat during fast charging.
• Technology used: Older silicon designs tend to be larger; newer GaN designs can be noticeably smaller at the same wattage.

If you want a travel‑friendly option, consider a GaN model with the wattage you need and a foldable plug. For desks or charging several devices, a larger multi‑port brick can be practical. Actual size and performance vary by design.

“USB” covers several connector types. USB‑C is the newer, reversible connector that supports modern fast‑charging standards and is widely adopted on newer devices. USB‑A is still common on many cables and accessories, and plenty of chargers include both port types.

• Today’s landscape: You’ll find chargers with USB‑C only, USB‑A only, or a mix of both.
• What to choose: Match the brick’s ports to the cables you use now, and consider a dual‑port (USB‑C + USB‑A) if you’re transitioning.
• Future‑ready: Selecting a PD‑capable USB‑C port can offer broader compatibility as your devices evolve.

Connector availability changes over time, so flexibility can be helpful during the transition.

Pricing varies by features rather than a single standard. Factors that commonly influence cost include:

• Wattage and performance: Higher‑output bricks (e.g., 45W–100W) typically cost more than basic 20W options.
• Number of ports: Multi‑port models add convenience and complexity.
• Technology and build: GaN components, compact designs, and USB‑IF certification may affect price.
• What’s in the box: Some include a cable; others don’t.

To shop smart on Walmart.com, compare specs, read customer reviews, and use filters for wattage, port count, and features. Multipacks or bundles can offer value. Availability, delivery, and pickup options vary by location, so check the product page for current details.

The right wattage depends on your device’s charging needs.

• Phones and earbuds: Many work well with 18–30W PD.
• Tablets and handhelds: Often benefit from 20–45W.
• Laptops: Commonly need 45–65W or more; higher‑performance models may require 90W+.
• Multi‑device use: On multi‑port bricks, total output is shared; allow headroom if charging two or more devices at once.

Using a higher‑wattage PD charger typically doesn’t force extra power—the device negotiates what it can accept. If your device supports PPS, a PPS‑capable brick can improve efficiency. Pair the charger with a cable rated for the wattage you need. Checking your device’s specifications can help you dial in the best fit.