3.7v LiPo VU-meter

@Karlberg

11 years ago

https://everycircuit.com/circuit/6179697101635584

Displays charge state of a lithium battery. Change voltage on power supply 4.2v - fully charged, all LED's stay lit 3.0v - below nominal charge, red & yellow stay lit 2.0v - battery drained, only red is on