Abstract: Power banks are very important for increasing the operating period of portable electronic gadgets, laptops batteries are capable of providing power for few hours and then dries out with time. Therefore, the external charger is required to extend the operation of the laptop battery operation. This paper presents the design and simulation of a microcontroller based laptop power bank. The design involves the use of a battery management system to monitor and control the state of charge /discharge of the battery bank and voltage levels. The simulations were performed using PROTEUS and MATLAB software. Different operation scenarios were presented, and it was discovered that the BMS performed optimally. The results obtained indicate an optimal performance of the design.
Key words: battery management system, lithium ion batteries and power bank.
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