Advertisements for fast chargers, boasting slogans like "9.9 yuan with free shipping, fully charged in 30 minutes," are a common sight on major e-commerce platforms, enticing a vast array of consumers. During late-night browsing sessions, such inexpensive offerings are ubiquitous, tempting many to make a purchase. Given the high original prices and susceptibility to overheating of genuine chargers, consumers are often tempted to test out these seemingly "affordable and high-quality" alternatives. Nonetheless, the quality of these low-priced fast chargers warrants close scrutiny.