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.
Lithium–ion rechargeable battery, charging in a constant voltage constant current system. Charger No-load voltage is a deep discharge battery check if below 2.