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Simple and practical Li-ion battery charger

2016-05-11 17:27  
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Simple and practical Li-ion battery charger
Brief descriptions: You can home make a simple and pracitcal Li-ion battery charger. It can change the charge current by changing 4Ω resistor. D1 is power supply indication. D2 is charging indication and current limitting.Simple and practical Li-ion battery charger When debugging, 6.8K resistor can replace by a 10K trimming resistor. It is Using digital meter to monitor the battery voltage. When the battery voltage is 4.2V, you can adjust the 10K trimming resistor.