This is a power bank and a charger circuit project to back up energy when needed. Batteries normally ran out and many people choose to carry a backed up battery. Another alternative is having a portable power pack in order to solve such problems.

However, the price is reasonably high. As engineering students, we sat and thought of how we could solve this problem. That’s how we came up with this project utilizing the minimum parts required to make up a simple yet powerful power bank and a charger. This can charge any other phone that can be charged through the USB port.

The power bank is assembled by a college student with AA batteries and control circuits and exhibited in 2001and the charger is a device used to put energy into a secondary cell or rechargeable battery by forcing an electric current through it

. The power bank and charger is to provide additional means to charge mobile devices such as smartphones and laptops. The project’s specific objectives are to design and come up with a cost-effective power bank to design a power bank and mobile charger to store and charger respectively.

The power bank and the charger are very important to every individual using a mobile phone and a charge for power supply, with or without power. Without a power bank and charger learning can be a problem for students and their lecturers in terms of research with mobile phones.

Testing is the act of subjecting to experimental test in order to determine how well something works. In this case, testing is done in two distinct stages using a Digital Multimeter. In the first stage, we used assimilation on a circuit wizard to test whether the design would give us the required output.

In the second stage, we designed our circuit on a breadboard to confirm if the circuit was working properly as in the assimilation stage. In the final stage, we tested the overall system by checking the output of the USB plug with a Multimeter before connecting the phone to it and also checked the circuit for shorts. This project mainly focused on voltage regulation from AC 230V to DC 5v.

We encountered many challenges while designing and soldering the circuits. In the design, it was difficult to get the proper design that would meet our requirements and be capable of achieving our objectives. The soldering was a challenge since we had little experience.

We recommend you to check the output of the USB plug with a Multimeter before connecting your phone to it.  Also, check the circuit for shorts and take care of the capacitors because they are so dangerous and can cause fatal injury once you come in contact when they are fully charged.

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