Is It Normal for a Phone to Get Hot During BMW Wireless Charging?
2 Answers
It is normal for a phone to get hot during BMW wireless charging as long as the temperature does not exceed 60 degrees Celsius. Most BMW models have a wireless charging pad located in front of the gear shift lever. After powering on the car, simply place a phone that supports wireless charging on the pad to charge it. Reasons why the battery heats up during charging: During the charging process, the power circuit generates resistance when operating. The interaction between resistance and current inevitably produces heat, which is mainly concentrated in the battery and the internal PCB motherboard. In winter, when the ambient temperature is low, phone charging may not cause significant heating. However, in hot summer, as the ambient temperature rises and the internal heat generated during charging increases, the reduced temperature difference between the internal and external environments leads to lower heat dissipation efficiency, naturally causing the phone to get hotter. High ambient temperatures can also cause the internal hardware temperature to rise, potentially reducing operational efficiency. Additionally, for every 10-degree increase in lithium battery temperature, the chemical reaction rate doubles, accelerating battery drain. Therefore, controlling temperature is key to solving the issues of phone overheating and rapid battery drain. Suggestions to reduce phone heating: Close background apps to reduce the phone's workload and thus lower heat generation; disable automatic downloads and updates to minimize unnecessary installations; avoid using phone cases that hinder heat dissipation or remove them when the phone gets hot; place the phone in well-ventilated areas at home during summer; avoid prolonged use of high-power-consumption apps; and when charging in high ambient temperatures, place the phone in a ventilated location.
As someone particularly passionate about in-car technology, I've found that slight heating of the phone during BMW wireless charging is normal, primarily due to energy conversion losses in the electromagnetic induction process; any wireless charger releases some heat. However, if the phone becomes uncomfortably hot, it's necessary to investigate the cause. Possible factors include misalignment between the charging pad and phone, excessively high ambient temperatures, or additional heat generation caused by the phone's aging battery. For safety, I ensure my phone is compatible with BMW's Qi-standard charger and avoid direct sunlight exposure; using a thin phone case helps reduce heat buildup. Prolonged overheating may affect battery lifespan, so I rely on wireless charging only for short trips, switching to wired charging for long journeys. If abnormalities are detected, I visit the 4S store promptly to diagnose whether the charging module is faulty or has poor heat dissipation.
