Great idea Single Circuit 3.7 V 1S and 2S Battery Charger Circuit /LM358 High Precision Auto Cut-Off
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Hello, using this circuit, you can use 1S and 2S 3.7 volt batteries.You can charge it easily and safely The only thing you need to pay attention to is to set the calibration correctly. Set it to cut off 4.2 volts output for 1S so 8.4 volts output for 2S. and that's all then you can start using it If you haven't subscribed yet, you should subscribe now.

A list of materials___________________:
1X LM358 integrated - https://bit.ly/3jCrED1
1X BD140 Transistor - https://bit.ly/3mcUATJ
1X BC547 Transistor - https://bit.ly/2XKiah6
1X 3.3 V Zener Diode - https://bit.ly/3vKXCBG
1X 1N4007 Diode - https://bit.ly/3pF2R54
1X 16V / 1 uF capacitor - https://bit.ly/3Ckq1AY
1X 220R Resistance - https://bit.ly/3EkYlfR
2X LED (Red / Green ) - https://bit.ly/3vJf7Cq
6X 1K Resistance - https://bit.ly/2ZxMQTN
1X 10K Multipot - https://bit.ly/3no606s


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👉Circuit Diagram :
https://drive.google.com/file/d/1KZKZ...