Gift bow

Many probably have a problem with charging a Li-Ion battery without a controller, I had this situation. I got a dead laptop, in the battery 4 banks SANYO UR18650A were alive. I decided to replace the LED flashlight, instead of three AAA batteries. The question arose about charging them. Having rummaged in the Internet I found a bunch of sketches, but with details in our city it’s a little tight. Read More