Power banks with voltage switch

Voltage switch

— a regulator that allows to change the voltage at the output of the power bank manually. Most often, such a switch is used to set parameters at the DC output. This is due to the fact that this type of output does not have a strictly defined standard voltage, and different devices may need a different number of volts. So, if you plan to use a power bank with several DC-charged gadgets at once (for example, laptops), most likely, a model with this function will be the best choice.

Note that models without DC connectors may have a manual regulator to change the maximum current on the USB outputs; for such devices, the presence of a voltage switch is also indicated, but the notes specify that it is about a current.