To charge your battery with a USB port, connect your device's charging cable to the USB port and the other end to your device. Ensure the USB port is connected to a power source, like a power bank or wall outlet. A backpack with a USB charging port is more than just a bag.
Technically the standard USB port on your battery pack (aka power bank) will fit any standard USB cable. However, the amount of power it can provide may vary. A 1 amp USB port will charge your smartphone or tablet but may charge slowly, even if the battery is big enough to charge your smartphone more than once.
A USB charging port in a backpack works by connecting an external power source, like a power bank, to an internal USB port that you can use to charge your devices. Can you take a backpack with a USB charger on a plane?
When you connect your phone or any other device to the external USB port, it draws power from the power source via this internal wiring. The power flows from the power source, through the wires, into your device’s battery—allowing it to charge. Most backpacks with USB charging ports don’t come with a power bank included.
Even this keeps you away from the problem of running out your mobile phone battery. Besides, it leads you to safe traveling without having fear of losing your valuables. Because a USB charging port backpack acts as an anti-theft backpack and keeps your gear organized.
The power pack charger is a portable power source to charge a battery or other electronic items that have a USB interface. This is actually a wireless power bank which provides a quite handy and easy way to charge your fine while traveling. What is the USB port in my backpack for?