Li-Ion battery charger using LM317&LM358


Li-Ion battery charger using LM317&LM358
Red light flashing there is charging, green light flashing is soon to be full of ,green light is fully charged
Li Ion battery charger using LM317&LM358

First, do not install the battery, adjust the lower right corner of the adjustable resistor, let the battery output is 4.2V, and then transferred to the lower left corner of the adjustable resistance LM358 third pin is 0.16V, the charging current is 380mA,LM317 need to increase the heat sink.


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