The form of the portable power charger resembles that of a drinking vessel for out and about. Accordingly, it can be carried, for instance, in the side pocket of a rucksack or a bicycle cup holder. The device has various ports for USB, USB-C and a few electrical sockets. The various sizes of batteries can be changed according to charging requirements. Due to its particular form, there is no need for a ventilator, allowing the device to have reduced dimensions and to work quietly.