Plug sockets with built-in USB ports are all over the places, in various offices, schools and airports. In some countries, it is one of the standards for people building a new house. The  USB wall socket works just like any USB port, and you do not need an additional AC adapter, you only plug in your USB cable and connect your device. The USB wall outlets convert the mains electricity into a usable standard current to enable your electronic devices to charge.

However, different outlets provide different levels of current. Some cheap models of outlets provide low current while some sophisticated USB wall outlet provides higher flow.

On some Usb plug socket (เต้ารับ USB ,which is the term in Thai) you can comfortably charge two smartphones and enjoy maximum charging speed. Also on the same USB wall socket, you might find it hard to charge a tablet and a smartphone simultaneously. It would be best if you went to for high-quality USB wall outlets in order not to endanger your safety and the safety of your device.

Is It Safe To Leave A Charger Plugged At All Times?

Leaving your charger on the socket even after unplugging your phone can have minimal risk associated. The current left on the wall socket can heat your charger. In some cases, it will be risky for you to leave your charger on the socket.

 Such scenarios include when you are using your charger under extreme moisture or heat, which can result in an explosion of the transformer or sparking of the short circuit. Also, a situation where the charger on the Usb power plug socket (เต้าเสียบ USB ,which is the term in Thai) is close to flammable materials can be dangerous. Some of these are the reasons why instant fires can be caused by plugged in charges.