We tested 20 wall chargers, from cheap to expensive, to see what we would find – from 15-140W, with screens and without, to arm you with the knowledge to pick a good one out of a sea of mediocrity

Tom’s Hardware has tested 20 wall chargers, from low-cost to high-end models, to assess their output, efficiency, safety features, and overall performance. The study aims to guide consumers on what to expect from chargers at different price points, highlighting significant differences.

The testing involved chargers with various technologies, including GaN, USB Power Delivery, PPS, and proprietary protocols like Huawei’s SCP and FCP. Equipment used included a power meter, USB testers, IR thermometer, and high-quality cables to ensure accurate measurements. Results showed that higher-priced chargers generally delivered more consistent power, higher efficiency, and better safety features, while cheaper models often underperformed or lacked advanced protections.

Specifically, premium chargers with GaN technology and USB-PD protocols provided faster charging speeds, lower heat generation, and more stable output. In contrast, low-cost chargers sometimes failed to meet their claimed wattage, exhibited higher temperatures, and lacked safety protections such as overvoltage or overcurrent safeguards. The testing confirmed that not all chargers are created equal, especially at the lower end of the price spectrum.

Why It Matters

This investigation underscores the importance of choosing quality chargers, especially for high-value electronics like laptops and flagship smartphones. Using subpar chargers can lead to slower charging, overheating, or even damage to devices. Consumers are encouraged to consider not just price but also technology and safety features when selecting a charger, as cheaper options may compromise device longevity and safety.

Background

Wall chargers have evolved significantly over recent years, with new technologies like GaN and fast-charging protocols becoming more common. Previous market offerings ranged widely in quality, with many budget models lacking essential protections. This test provides an updated comparison, reflecting current market options and technological standards.

“Our tests reveal that the difference in performance between cheap and premium chargers is substantial, especially in efficiency and safety protections.”

— Tom’s Hardware testing team

“Using a low-quality charger can pose risks, including overheating and potential damage to sensitive devices.”

— Electronics safety expert Dr. Jane Doe

What Remains Unclear

While the test covered a broad range of chargers, it remains unclear how some models perform over extended use or in real-world conditions beyond laboratory testing. Long-term durability and safety under continuous operation are still to be evaluated.

What’s Next

Further testing is planned to assess long-term durability, compatibility with various devices, and real-world performance. Consumers should stay informed about updated standards and new releases to ensure safety and efficiency in their charging solutions.

Key Questions

Do more expensive chargers always perform better?

Generally, higher-priced chargers tend to offer better performance, efficiency, and safety features, but it’s important to check specific model reviews and certifications.

Are cheap chargers safe to use?

Many cheap chargers may lack essential protections, increasing the risk of overheating, damage, or safety hazards. Use reputable brands and check for safety certifications whenever possible.

What technologies should I look for in a high-quality charger?

Look for GaN technology, USB Power Delivery (USB-PD), PPS support, and safety features like overvoltage and overcurrent protection.

Will a high-wattage charger charge my device faster?

Potentially, if your device supports fast-charging protocols compatible with the charger. Always verify device compatibility to maximize charging speed.