Battery Level Indicator IC KA2284 9-Pin

From the shop's description

Features: High gain rectifying amplifier included(Gv=26dB) Low radiation noise when LED turns on logarithmic indicator for 5-dot LED of bar type. Constant current output( 15mA) Wide operating supply voltage(3.5V~16V) Not necessary diode or transistor for ALC Minimum number of external parts required Block Diagrams: Circuit Diagrams: if the LED1 is ON (IC Pin 1) – the battery charge is 100% full else if LED2 is ON (IC Pin 2)- the battery charge is 75% full else if LED3 isON (IC Pin 3)- the battery charge is 50% full else if LED4 is ON (IC Pin 4)- the battery charge is 25% full else LED5 is ON (IC Pin 6)- the battery charge start from 0% Note: will use 12V battery and calibrate using this potentiometer…next will use 9v battery and again calibrate using this potentiometer. Application: Audio level Indicator Battery level indicator