Creating your own portable charger may seem like a complex task, but with the right materials and a little patience, it’s entirely possible to do it in just five minutes. This project is ideal for those who enjoy electronic DIY, want to save money and take advantage of recycled materials. Below, we explain step by step how to do it and share tips to make it work safely and effectively. We have helped ourselves with the information in the following video:
Materials needed:
- 1 x 3.7V rechargeable lithium battery (type 18650)
- 1 TP4056 module with protection and USB output
- 1 small switch
- 1 plastic casing (can be from an old charger or a recycled box)
- 1 x USB cable for power output
- Electrical or heat shrink tape
- Soldering iron, tin and basic tools
Step by step:
- Prepare the battery: Check that the battery is in good condition, without bumps or leaks. Wear gloves and eye protection.
- Connect the charging module: Solder the positive and negative terminals of the battery to the corresponding input on the TP4056 module. Make sure to respect polarity.
- Add the switch: Install the switch between the module and the USB output port so you can turn the charger on and off whenever you want.
- Assembling the case: Place all the components inside a plastic box that protects them. Leave it firmly fixed and ensure space to access the USB connector.
- Final Test: Before closing the device, connect an old cell phone to verify that it charges correctly.
Tips and recommendations:
- Do not use dented batteries or batteries with signs of swelling. They could be dangerous.
- Use duct tape or heat shrink sleeve to cover connections and prevent short circuits.
- Label the device so that it is not confused with a commercial charger, since it is a homemade product.
- Don’t charge expensive devices until you’re completely sure the charger is working properly.
- Monitor the load. Since it does not have advanced regulators, it is ideal not to leave it charging for many hours.
Benefits of the project
- Saving money by avoiding buying a commercial charger.
- You reuse materials that would otherwise go to the trash.
- Learn about the basics of electricity and energy.
- Ideal as a school or weekend project.
Conclusion
With a little creativity and responsibility, you can make a functional portable charger using simple materials. These types of projects are not only useful, but also encourage hands-on learning and ecological awareness. Dare to try it and discover what you can do with your own hands.