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INTRODUCTION In my country, Nigeria, we do not have adequate power supply. The national grid supplies power to homes on the average of six hours per day. We do use petrol or diesel power generators as alternative to supplying power to homes. However, these fuels are expensive and is extremely difficult for an average income earner like me to burn daily for ten hours or above. Also, running this kind of generators generates noise and toxic fumes into the air and all these represent health hazards. As a way to curb these challenges namely: power outages, financial and health issues, I decided to install the battery and inverter system in my house to augment power supply for my domestic use. SYSTEM OVERVIEW Depending on the battery capacity and the inverter rating, the system can power air conditioners, electric iron, bulbs, electronic gadgets etc. For my installation as you can see in the video, I use it to power my electronic gadgets eg Television, Satellite television decoder and DVD Player. I also use it to charge my mobile phone and camera batteries. HOW IT WORKS The battery capacity is 150Amps and 12Volts DC (Direct current) while the inverter rating is 1.2KVA. When the national grid supplies power or when I put on my petrol power generator, the battery is charged. When both of these power supply means are off, the charged battery is used to power the electronic gadgets. As the battery is DC, the inverter is connected to it to convert DC to alternating current (AC … [...]