A Power Bank is a portable charger that charges phones and other equipment. Simply put, it is a special portable unit with which you can charge your smartphone without a power outlet. Most often, powerbanks are used on long trips or travel when you can not always use electricity.
And what is the principle of operation of these portable batteries? Let’s start with the internal components of a power bank. Under the plastic or metal casing, there are several batteries connected through a parallel circuit. They form a single high-capacity battery.
In this case, there is usually a special indicator in the form of an LED and several USB connectors. The charging cable connects the smartphone or other device to the power bank. After pressing the special button, the equipment starts charging. Also on sale, you can find simple models without an indicator and a very inconvenient button.
You do not have to worry about accidental overcharging of your smartphone when using a portable power source. The Power Bank has a built-in special controller that will stop the current supply if the battery is full. Paverbanks come in different designs, ranging from cylindrical to cubic. The size of the charger depends on the total capacity of the batteries installed in it.
