Hi, think about using a step down transformer. The buck converter I posted I am using for a wind turbine. Then you have to consider what happens when the battery reaches full charge. One method is to use a diversion load circuit. Why do you want to fabricate the charger?
The discussion focuses on designing a 12V, 3A battery charger powered from a 220V AC input. Key considerations include whether to implement a simple automotive-style trickle charger or a more advanced smart charger with a three-stage charging profile. Suggestions include using a step-down transformer or a buck converter for voltage regulation. Managing the battery's full charge state is critical, with options such as diversion load circuits to prevent overcharging. A reference circuit link is provided for practical guidance. The project is intended as an educational exercise in battery charger fabrication. Summary generated by the language model.