Smart 18650 Li-İon Charger Circuit With Battery Full Led İndicator

Smart 18650 Li-İon Charger Circuit With Battery Full Led İndicator
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Hello friends, today in this video I've shown how to make a precision li-ion charger circuit. The heart of this circuit is the tl431 regulator. You can easily adjust the current by changing the 47ohm resistor, decreasing the resistor value will increase the current. you can use any online tl431 calculator to get your desired voltage. Before connecting to the battery, please check the output voltage first.
1. TL431 Regulator
2.D882 Transistor
3.1k ohm Resistor
4.680 ohm Resistance
5.47 ohm Resistance
6.LED