In an interview with the agency, experts warned about a risky habit: charging a smartphone overnight and tucking it under a pillow. This common practice can have serious outcomes including overheating, which may lead to a fire or an explosion. The warning comes from Sergey Kuzmenko, a senior specialist for testing digital products at the Roskachestvo Center for Digital Expertise. He stressed that while overnight charging itself does not automatically damage a device, it becomes hazardous if any component ceases to work properly.
Kuzmenko explained that when a phone stays on charge for extended periods, there is a real chance the charge controller could fail. If no limit is maintained on the current flowing into the battery, the risk of overheating rises significantly. This is not a theoretical concern; it is a practical safety issue that many users overlook, especially in the bedroom where a phone is often placed close to fabric or bedding.
To reduce the chance of overheating, experts recommend charging in a room that maintains a comfortable ambient temperature, ideally around 20 degrees Celsius. It is also important to watch humidity levels, as excessive moisture can affect electronic components and charging efficiency.
An effective strategy suggested by Kuzmenko is to keep the battery charge within a moderate range, such as 50 to 70 percent. This practice can help extend the overall lifespan of the battery and minimize stress on the power management system. By avoiding full charges or deep discharges, the device experiences gentler, steadier current flow, which contributes to longer-term reliability.
There is a broader context to these recommendations. Roskachestvo has previously commented on how heat exposure can cause a smartphone battery to swell or leak when left in direct sunlight or in hot environments. The takeaway is clear: protect the device from heat sources, let it breathe in safe surroundings, and use proper charging habits. By paying attention to temperature, humidity, and charging levels, users can reduce the risk of damage and preserve battery health over time. [Roskachestvo]