Is Wireless Charging Safe Overnight – Guide to Wireless Charging

No more tangled cables and cluttered charging stations. Wireless charging is taking the world by storm and the technology is growing greatly.

Even though more and more manufacturers support wireless charging, there is still a long way to go before this technology replaces the “old way” of charging.

With the iPhone 8, iPhone 8 Plus and iPhone X, the tech giant Apple launched its first phones with the option of wireless charging. In addition, a separate charging surface was designed to charge several devices simultaneously.

Before that, it was mainly Nokia and Samsung that embraced this technology, and they already have more models on the market that are compatible with wireless chargers.

This is how wireless charging works

Wireless: Induction charging works with the help of two metal coils, one in the mobile and one in the charger. Illustration: VG Partnerstudio

A wireless charger, or induction charger as they are also called, charges the device using two metal coils. There is a metal coil in the charging station and one in the mobile phone. When the coil in the charging station receives power, a magnetic field is created which transfers energy from one coil to the other – and then the mobile phone is charged.

However, the technology that Apple uses in its new phones is not new – several of us already use it daily. For example, both electric toothbrushes and induction hobs on the stove use the same technology. However, this does not mean that you can charge the new Apple phone on a plate. Apple, like several other mobile phone manufacturers, has chosen to use the Qi standard (pronounced “chi”).

Not harmful with wireless charging

New technology brings new worries – at least for some. But there is no major reason to worry. It is well-known technology where the metal coils create a small magnetic field.

Although it is safe, it is not safer than regular wireless chargers, and therefore it is recommended not to leave the phone at night.

Wireless future

The technology is not good completelet developed yet. We have to accept that there will be wall charging for phones for a while, because they charge the battery faster. Only on the day when wireless chargers charge as fast, or faster, can they become standard.

It is becoming more common with fires in battery-powered electronics products. Both the rechargeable batteries and the charger itself may start to burn.

Why can it start to burn when you charge your mobile phone, computer or tablet?

It has been shown that overheating can occur in the USB charger itself. Even the modern lithium-ion batteries have proven to be unstable at various operating modes. In such situations, a thermal effect can occur which causes the battery cells to explode or start to burn.

What can be done to reduce the risk of charger fire?

  • Use original chargers and CE marked products.
  • Charge on hard surfaces – not in the bed or sofa.
  • Make sure the charger and cord are intact. Discard the product as soon as it breaks!
  • There are good quality charging cables on the market today that are extra reinforced and have an increased service life.
  • Unplug when fully charged.
  • Some phones can be charged wirelessly.
  • There are wall sockets on the market today with integrated USB. (Note: Hire the installation professional).
  • Have working smoke alarms.
  • If possible, avoid charging at night. Charge under supervision – either that you yourself are in the room or that you have a working smoke alarm there.
  • Charge the device before the battery reaches 0% and do not charge more than 80%. Charge far between the aisles. Avoid fast chargers as long charging times are gentler. Avoid having the phone in too hot an environment, such as in the car on a hot summer day, by the fireplace or on the beach.


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