十几块和上百块的充电头 到底有啥区别？

Core Viewpoint - The article emphasizes the significant differences in quality and safety between low-cost and certified mobile phone chargers, highlighting the importance of choosing products with proper certifications to ensure user safety [11]. Group 1: Weight Comparison - Experimental data shows that qualified chargers are generally heavier than cheap chargers, indicating the use of more robust components in compliant products [3]. Group 2: Internal Disassembly - The disassembly of chargers reveals stark contrasts in construction quality; cheap chargers exhibit rough workmanship, sparse component layout, and inadequate soldering, while qualified chargers have a compact and organized internal structure with high-quality electronic components [5][8]. Group 3: Shell Flame Retardant Testing - Chargers can reach temperatures between 30°C to 80°C during operation, with higher temperatures during fast charging; the outer shell serves as the first line of defense against short circuits and overheating [7]. - Qualified chargers typically use high-temperature resistant and flame-retardant materials, whereas inferior chargers may not only lack these materials but can also exacerbate fire risks [11]. Group 4: Recommendations - The article advises consumers to prioritize chargers with "3C certification" and to avoid purchasing unbranded or uncertified products, as these often compromise safety and stability for cost savings [11].