Self-powered Fast Battery-Tester

Parts:

R1______________2K2 1/4W Resistor
R2______________3R3 1/4W Resistor
R3_____________10R 1/4W Resistor
R4______________4K7 1/4W Resistor
R5_____________33K 1/4W Resistor
R6,R7_________100K 1/4W Resistors
R8____________220K 1/4W Resistor
R9____________330K 1/4W Resistor
R10___________500K Trimmer Cermet

C1,C2__________10nF 63V Polyester Capacitors
C3-C7_________100nF 63V Polyester Capacitors
C8____________220µF 35V Electrolytic Capacitor

D1,D7___________LEDs Red 5mm. (see Notes)
D2-D6________1N4148 75V 150mA Diodes

Q1___________2N3819 General purpose FET
Q2,Q3_________BC337 45V 800mA NPN Transistors

IC1,IC2________7555 or TS555CN CMos Timer ICs

P1_____________SPST Pushbutton

SW1____________DPDT Switch

BUT____________Battery under test

Holder or clips to connect the Battery under test to the circuit