This is a simple charger for Lithium–ion (Li–Ion) and lithium polymer (Li-Pol) cells with well-known integrated circuit LM317. Charging characteristic is shown in .
Li–ion Battery Charger: When I bought a 7.4 V Li–Ion battery, little did I know that it. circuit by Scott Henion that makes use of an LM317 Adjustable Regulator.
LiIon charger with LM317 and Cutoff circuit – Part I. Very often I need to charge one or two series LiIon cell for my experiments. I do have a sophisticated battery .