The charging with a constant current of 60 mA for AA batteries for a sequestration of 2.4 V per cell, when the charge should be terminated. The charging system is indicated for the battery to several cells of 2-6 cells connected series or series / parallel arrangements. It is important that all cells are assembled in the package is in the same state-of charge (voltage) before loading. upper cut-off voltage is 15.6 V (6 x 2.6 V). ICL7665 is a voltage monitor with dualover / under voltage detection.
Battery Charger circuit for Lithium Battery