How to Build a NiCd Battery Charger

You can use a NiCd battery charger to charge the batteries used in devices such as motors and laptops. These batteries are quite popular because of their ability to provide a considerable amount of power, and they are also easily rechargeable. It can sometimes prove to be expensive to manufacture such a NiCd charger, but you can follow the instructions below to make your own.

Tools and Materials

  • Lamp
  • Glue
  • Battery holder
  • Flat surface
  • Drill
  • USB Cable Charger
  • Batteries (2 AA)
  • Circuit board of the appropriate kind
  • Circuit diagram (available online)
  • Appropriate components for circuit board
  • Soldering gun
  • Solder wire

Step 1 – Safety and Precautions

Given the various tools and materials that you use during this project, it is best to keep in mind a number of safety measures. Since you will be using a soldering gun, keep on hand a pair of rubber gloves and eye goggles. You must work in a well-ventilated area as the smoke from soldering can prove to be irritating. Thoroughly wash your hands once you have finished the soldering work as the gun contains lead, which is poisonous and can be fatal. It is also useful to work in a well-lit room and on a flat surface.

Step 2 – Purchase Suitable Circuit Board

It is time to assemble the circuit board to make the battery. All sorts of electrical components can be added onto such boards. It is slightly difficult to prepare your own circuit board, so you can purchase one that has already been assembled. You can find one at a hardware store. Consult with a professional electrician before you buy.

Step 3 – Assemble Components on Circuit Board

Solder the pieces of the circuit board into place with the help of a soldering gun and wire. Use a circuit diagram—available online or from a textbook—to determine where exactly each component needs to go. Consider the resistor, transistor, battery holder with two AA batteries, and USB cable port and so forth.

Lay out the circuit board on a flat surface. Attach each component with a soldering gun and glue, ensuring that excess metal does not get melted during this process.

Step 4 – Wrap Up

By this point in time, the entire circuit board should be complete and ready to charge. Simply connect the USB wire with the NiCd battery, which should now be ready to start charging. Test it to make sure it is functioning properly.