央视报道了多地因手机充电器长期不拔引发的火灾事故。1福建泉州一处民房火灾是由住户将手机充电器长时间插在客厅沙发下方插座上，充电器故障产生电火花引燃周边可燃物所致。1湖南益阳沅江市也发生过类似的民房火灾事件。1
消防部门通过一系列实验验证了长期不拔充电器的危害。1用测电笔靠近充电器时灯亮且长时间不灭，说明充电器内始终存在感应电流。1检测显示，充电器空载后表面温度比周围环境高出约5℃。1在模拟破损短路实验中，两根线路接触时瞬间产生电火花并冒出白烟，足以引燃周边可燃物。1
消防部门建议公众养成及时拔下充电器的习惯，并强调使用原装充电器，避免在枕头附近或高温环境下充电。1
China's state broadcaster CCTV reported on fire hazards caused by leaving mobile phone chargers continuously plugged into wall outlets, citing multiple incidents across the country 1. Fire departments have documented cases in Fujian's Quanzhou and Hunan's Yueyang where residential fires were triggered by chargers left unattended for extended periods 1. In one Quanzhou incident, a homeowner had inserted a phone charger into a socket beneath their living room sofa for a prolonged duration, and the charger malfunctioned, generating electrical sparks that ignited surrounding combustible materials 1.
Through experimental testing, firefighters have validated the dangers of leaving chargers connected to power supplies without active use 1. When a test pen was brought near an idle charger, its indicator light illuminated and remained lit for an extended period, demonstrating that a residual induction current continuously flows through the charger even when not charging a device 1. Temperature measurements showed that an unused charger's surface temperature exceeded ambient room temperature by approximately five degrees Celsius 1. In a simulation of short-circuit conditions, when two wires inside the charger made contact, an electrical spark instantly ignited, producing visible white smoke 1.
Fire safety officials recommend that the public develop the habit of unplugging chargers after use, use original-equipment chargers, avoid charging devices on or near pillows, and refrain from charging in high-temperature environments 1.
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