20.04.2025

I couldn’t believe it myself! Old phone batteries can do this!

By Vitia

Many throw away old cell phone batteries without knowing that they can be reused in a creative and functional way. This video demonstrates practical ideas for giving them a second life, using simple DIY techniques that are accessible to everyone. We have helped ourselves with the information in the following video:


Battery reuse: hidden potential

Old cell phone batteries still hold a charge and can be used as a power source for small projects. From powering LED lights to functioning as portable power banks, these batteries can be of great use if handled correctly.


Ideas proposed in the video:

  • Battery status check by multimeter.
  • Safe removal of the protection circuit.
  • Creating an LED flashlight with a switch.
  • Connection to USB ports to charge other devices.
  • Use of recycled modules for solar energy projects.

Tips and recommendations:

  • Always handle batteries with care and wear gloves and eye protection.
  • Do not use swollen or damaged batteries.
  • Make sure the battery is completely discharged before handling it.
  • Use a multimeter to check the voltage and general condition.
  • Keep them out of the reach of children and pets.

Possible applications:

  • Power low-power sensors or devices.
  • School projects of electronics or renewable energy.
  • Portable lighting systems for camping or emergency.
  • Power sources for small motors or fans.

Conclusion:

Older cell phone batteries can have a second life if they are reused carefully. With a little creativity and caution, they can be transformed into energy sources for useful small projects. It’s a great way to reduce tech waste and encourage innovation from home.