Hi, im desiging a PWM(boost converter) battery charger for lithuim ion battery cell. Im assuming that the battery will never get to a complete discharge level. so the battery voltage will never have that suddent drop in voltage across its terminals. I want to use the "constant current constant voltage" method. But since the battery will never be discharged fully, i dont have to worry about the constant current part. Now what is it exactly am i sensing to see when the battery is fully charged to eventually stop the charging, the battery voltage terminals wil be constant, so what is it thats gona tell me that the battery is fully charged. keeping in mind that i dont want to get into tempreture sensing.