A power brick is a compact wall adapter that plugs into a standard outlet and supplies low-voltage DC power through USB ports to charge your devices. On this page, you’ll see single- and multi‑port options for phones, tablets, earbuds, and even some lightweight laptops.

• Ports: USB‑C and/or USB‑A for different cables.
• Wattage: Power ratings (e.g., 20W, 40W, 65W, 100W) indicate how much power it can deliver.
• Fast charging: Look for standards like PD, PPS, or QC for compatible devices.
• Design: Some use GaN components for a smaller, cooler-running build, and may include foldable plugs.

People use “power brick” as a casual way to describe plug‑in charging blocks or external AC adapters. On this page, it typically refers to USB wall chargers—those small cubes or multi‑port blocks that power phones, tablets, and accessories.

• Not a battery: It doesn’t store energy; it works while plugged into the wall.
• Different from a power bank: Power banks are portable batteries, not wall chargers.
• Variety: Options range from simple single‑port cubes to high‑wattage, multi‑port models.
• How to choose: Consider port type (USB‑C/USB‑A), total wattage, and fast‑charge support that fits your devices.

Inside, a power brick changes high‑voltage AC from your outlet into low‑voltage DC that devices can use. Many models negotiate with your device to provide an appropriate voltage and current.

• AC to DC: Internal components rectify and regulate the output for safe charging.
• Negotiation: USB‑C PD offers common levels (like 5V, 9V, 15V, 20V, where supported). PPS can fine‑tune voltage for compatible phones.
• Cables matter: Using a quality, compatible cable can help maintain stable charging.
• Safe use: Keep the brick ventilated, avoid moisture, and use it with devices within the listed specs. A slight warmth during use can be normal.

Match the charger’s wattage to what your device can accept, then add headroom if you’ll power multiple devices at once.

• Phones: Many fast‑charge at around 20W or higher with compatible standards.
• Tablets: Often benefit from 20–45W, depending on the model.
• Light laptops: Commonly need 45–65W or more; check the device’s guidance.
• Multi‑port bricks: Total wattage is shared across ports, and per‑port limits vary by model.
• Good to know: Higher‑wattage chargers can typically power smaller devices because they negotiate the needed amount, but results can vary by device and cable.

Fast charging depends on the charger, the port, your cable, and your phone’s compatibility. A few checks can help.

• Port compatibility: Use a port that supports your phone’s fast‑charge standard (e.g., PD or PPS).
• Cable quality: Try a high‑quality cable rated for fast charging; swap in another to test.
• Wattage and sharing: On multi‑port bricks, power is shared. Plug high‑draw devices into a primary USB‑C port.
• Heat and battery level: Devices may slow charging if hot or near full.
• Device settings/updates: Some phones manage charging speed in software. Results can vary with device and conditions.