So, I'm a High school student, and for engineering, our project requires chargine a semi-large array of UPS batteries. The batteries need to output 36v and 4.5A max, and I plan on getting a transformer capable of putting out enough power to charge them.
What my issue is, is finding a way to disconnect the battery bank from the transformer when they are charged.
I have asked my father, who has forgotten more than I know, and he's said that there were likely IC's out there to do what I need. I found this IC, which is kinda similar to what I need to do, but this thing can't handle anywhere near the wattage I need.
Is there an IC to do what I need, or will I need to design my own? If I have to design my own, how would I go about doing it. What components would I need to use, and what are their functions. I want to understand why they're doing what they do.
TL;DR: Need a 36v 4.5A lead acid smart charger, and want to understand how it works.