Patent ID: 6304087
Filing Date: 2001-10-16
Classification: G01R,H01M,Y02E

Abstract:
An apparatus for calibrating an electronic battery tester, the battery tester of the type having first and second battery tester Kelvin connections configured to couple to terminals of a battery, the apparatus comprising:a first Kelvin connection having an A' terminal and a C' terminal configured to couple to the first battery tester Kelvin connection;a second Kelvin connection having a B' terminal and a D' terminal configured to couple to the second battery tester Kelvin connection;a calibrated shunt in series with a power supply connected between the A' terminal of the first Kelvin connection and the B' terminal of the second Kelvin connection, the calibrated shunt having a calibrated resistance value; andan active shunt in series connected between the C' terminal of the first Kelvin connection and the D' terminal of the second Kelvin connection, the active shunt providing a calibrated apparent resistance between the C' and D' terminals which is a function of the calibrated resistance value of the calibrated shunt.