I was wondering if anyone could help me with a charging circuit. I want to use a usb-c to charge a 3.7v li-ion battery and power an arduino nano, it should have protection from under/over charging, the circuit need to provide 5v at about 1-2amps to the 5v rail that will be powering 5 servos an arduino and a led. I want it so that when you unplug the usb-c the circuit will still power the project. I think powering the nano from the 5v rail would be easiest. Go easy on me I'm still in the process of learning and was wondering if someone would help me design this.

thanks