Here is a tried and tested sample circuit of a Li–Ion battery charger that can be used to charge any 3.7V Li–Ion battery using a 5VDC (USB, Solar.
detail circuit diagram and its operation principle are proposed and some experimental results are also given.. Keywords: battery charger, lithium ion, battery .
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Dec 21, 2018- In this article we study a simple usb 3.7V li–ion battery charger circuit with auto-cut off, current control features. How the Circuit Works The circuit