Author Topic: Double Lithium-Ion/Lithium-Polymer USB Type-C Charger  (Read 1088 times)

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Offline hesam.moshiriTopic starter

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Double Lithium-Ion/Lithium-Polymer USB Type-C Charger
« on: February 25, 2022, 10:07:06 am »
Nowadays, Lithium batteries are used extensively in portable devices, such as cellphones, laptop computers, electronic gadgets, … etc. There is a standard industry-defined procedure (cycle) for charging the lithium-ion/lithium-polymer batteries, otherwise, the lifetime of the batteries is reduced significantly or even they might explode and catch fire. As a basic rule of thumb, a lithium battery should be charged at the rate of 0.5C to 1C. In this article/video, I have introduced a universal double lithium battery charger that the charging current (C rate) can be adjusted simply by changing a resistor value. You just need a 5V power source (such as a mobile charger) and a USB Type-C cable.

To design the schematic and PC, I used Altium Designer 22 and the SamacSys component libraries (Altium Plugin). To get high-quality PCB boards, I sent the Gerbers to PCBWay and purchased original components using componentsearchengine.com. To examine the charging current/voltage, I used the Siglent SDM3045X multimeter. Isn’t cool?!, So let’s get started!



Offline hesam.moshiriTopic starter

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Re: Double Lithium-Ion/Lithium-Polymer USB Type-C Charger
« Reply #1 on: February 28, 2022, 03:49:30 pm »


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