Step 1: Hardware Requirement

  • A 5v Solar Cell (make sure it is 5v and not anything less than that)
  • A general purpose circuit board
  • A 1N4007 High Voltage, High Current Rated Diode (for reverse voltage protection). This diode is rated at forward current of 1A with peak reverse voltage rating of 1000V.
  • Copper Wire
  • 2x PCB Screw Terminal Blocks
  • A 18650 Battery Holder
  • A 3.7V 18650 Battery
  • A TP4056 battery protection board (with or without the protection IC)
  • A 5 V power booster
  • Some connecting cables
  • and general soldering equipments

Step 2: How the TP4056 Work

Step 3: Copper Legs

Step 4: Assembly

Step 5: Testing



Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store