How Does a Power Bank Work?

A power bank is a wireless battery that can receive and produce charge. For a power bank to work, it must be charged to store energy. First, an adapter cable provided with the power bank is used to charge it with a wall outlet. Once the indicator light on the power bank shows the accessory is charged, it can be used to charge electronic devices.

The energy stored inside of a power bank is then transferred through a charging cable from the USB port to the device.

How to Make a Power Bank

If you’ve ever wondered what’s inside your power bank, we have the answers. A power bank is made through 10 simple steps!

Here’s how a power bank is made:

• Step 1: Terminals are attached to the lithium-ion battery.
• Step 2: The circuit board is assembled.
• Step 3: The batteries are soldered to the circuit board.
• Step 4: Each power bank is tested to determine current and voltage.
• Step 5: The batteries are encased in a protective housing.
• Step 6: Electrical connections are tested again to ensure working order.
• Step 7: A burn-in test is performed to check the battery capacity.
• Step 8 (Optional): The brand name or a design is printed or engraved onto the protective housing.
• Step 9: Finished power banks are given one last visual inspection before shipping.
• Step 10: The power banks are ready to charge your electronic devices.