TL;DR
Tom’s Hardware evaluated 20 wall chargers across price ranges to analyze output, efficiency, and safety. The findings reveal significant performance differences, informing consumer choices.
Tom’s Hardware tested 20 wall chargers, spanning low-cost options to high-end models, to assess their output, efficiency, and safety features. The results show notable differences that impact consumer choices and device safety.
The testing involved chargers with various technologies, including GaN, USB Power Delivery (USB-PD), PPS, and proprietary protocols like Huawei’s SCP and FCP. Using specialized equipment such as USB testers, wall power meters, and IR thermometers, the team measured voltage, current, wattage, temperature, and protocol adherence.
The results confirmed that higher-priced chargers generally delivered more consistent and higher power outputs, with some budget chargers failing to meet their claimed specifications or overheating during extended use. For example, premium GaN chargers showed better efficiency, less heat generation, and faster charging speeds, while cheaper models often exhibited lower efficiency and higher temperatures.
Specific performance metrics varied: some chargers supported up to 240W, aligning with their claims, whereas others fell short or lacked protocol support, limiting compatibility and speed. Safety features like overcurrent and overvoltage protections were present in most tested chargers, but their effectiveness varied.
Why It Matters
This testing highlights the importance of choosing a charger with proper safety features, efficient technology, and reliable output, especially for high-power devices like laptops. Consumers can avoid potential damage to their devices or safety hazards by understanding these differences. The findings also underscore that higher cost often correlates with better performance and safety, although some mid-range models perform well.
Anker Prime Charger, 100W 3-Port GaN USB C Charger Block, Fast Charging wall Charger, Foldable and Compact for MacBook, iPad, iPhone 17 Series, Galaxy S24/S23, and More
100W Multi-Device Fast Charger: Power up three devices simultaneously with a total of 100W output through two USB-C…
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Background
Wall chargers have evolved significantly over recent years, integrating GaN technology and fast-charging protocols to improve speed, size, and heat management. Previously, cheap chargers often lacked safety features or did not deliver their advertised power levels, leading to potential device damage. This test builds on ongoing industry assessments aimed at helping consumers identify reliable chargers amidst a growing market of varied quality and features.
“Higher-end chargers consistently delivered more stable power with less heat, confirming their suitability for demanding devices.”
— Tom’s Hardware testing lead
“Not all chargers that claim high wattage are safe or effective; proper protections are essential for device longevity.”
— Industry safety expert
Anker Phone Charger, 65W 3-Port Fast Compact Foldable USB C Charger Block, Type C Charger Fast Charging for MacBook Pro/Air, iPad Pro, Galaxy S20, Dell XPS 13, Note 20/10+, iPhone 17 Series, and More
The Only Charger You Need: Say goodbye to your old chargers. Anker 735 Charger (Nano II 65W) has…
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What Remains Unclear
It is not yet clear how long-term use affects the durability of different chargers, or how real-world conditions like temperature and usage patterns influence performance and safety.
BIYTC 240W Laptop Charger Compatible with Dell Precision 7780 7770 7680 7670 Alienware 15 17 M15 M17 X15 X16 X17 Power Supply Cord 240W Watt Barrel 7.4mm tip AC Power Adapter
Input: 100-240V 50-60Hz 1.8A; Max Output: 19.5V-12.3A 240W (Compatible with 180W ); Connector size: 7.4mm*5.0mm
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What’s Next
Further testing is planned to evaluate long-term durability and performance under various environmental conditions. Consumers are advised to consider chargers with verified safety standards and protocols, especially for high-power applications.
(UL Certified Safety) 240W Charger Fit for Alienware Laptop M17 M15 R3 R4 R2 R5 R6 R7,Fit for Dell G15 5530 5510 5520 5525 5515 5511 G16 7620 G5 G7 15 17 R2 R3 X15 M17X M14X Laptop Charger Power Cord
SAFETY:Nicpower chargers manufactured with the highest quality materials small and lightweight fine workmanship and include OVP,OCP,SCP Protection (OVP:…
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Key Questions
Are expensive chargers always better?
While higher-priced chargers tend to offer better performance, efficiency, and safety features, some mid-range options also perform well. It’s important to check for certified safety features and protocol support.
Can cheap chargers damage my device?
Potentially, especially if they lack proper protections or deliver inconsistent power. Using certified chargers from reputable brands reduces this risk.
What technologies should I look for in a charger?
Look for support of USB Power Delivery (USB-PD), GaN technology for efficiency, and safety features like overcurrent and overvoltage protection.
Does higher wattage mean faster charging?
Generally, yes, but only if your device supports the higher wattage and the charger is compatible. Compatibility and protocol support are key factors.
