To make your own power bank, you need the following materials and steps:
Material:
1.18650 lithium battery (recommended capacity above 2000mAh)
2. Charge management IC (for example, TP4056)
3. USB conversion port (using Micro USB as an example)
4. Battery strip (for connecting battery to charge management IC)
5. Battery box (for protecting battery and circuit)
Steps:
1. Solder the battery sheet and the battery management IC together. Make sure the positive and negative terminals of the battery are properly connected to the circuit.
2. Weld the positive and negative terminals of the USB adapter to the corresponding pins of the battery management IC. Make sure the connection is secure.
3. Place the battery and circuit in the battery box and close the box to ensure that the circuit and battery are protected.
4. Connect the USB cable of the mobile phone or other device to the charging bank to start charging.
Please note that making and using a homemade power bank requires care and caution. If you are not familiar with electronic circuits, be sure to consult a professional or purchase a ready-made power bank product. The wrong operation can cause the battery to explode or other dangerous conditions.
Self-made charging treasure requires the purchase of some batteries, circuit boards, chargers and other materials. Then connect the circuit board and battery according to the circuit diagram, install the charger and USB interface. In order to ensure the safety and stability of the charging bank, it is necessary to conduct some testing and debugging.
Finally, put the assembled power bank into the shell and use it. In the process of production, it is necessary to pay attention to safety issues to avoid overheating and short circuit of the battery.
Materials such as batteries, charging modules, shells, switches, and wires need to be prepared for self-made charging banks.
First, connect the battery to the charging module, and then connect the switch to the charging module, and test whether the charging module works normally after connecting the power supply.
Then the wire is welded to the charging module, the shell is drilled to facilitate the passage of the wire, and finally all the components are installed inside the shell to complete the production of the charging bank. It should be noted that safety must be paid attention to during the production process to avoid battery short circuit or other unexpected situations.