The parameter LED numeral demonstrated that,direct-viewing understands,attaches the multi-purpose test jig,the test pattern may Omega and 2 Omega between cuts in 200m;The fast value,stable is reliable,The economy is practical;The contour is dexterous,is advantageous for carries.It suitable in the cadmium nickel,the metal hydride nickel battery (group),the lithium ion battery,as well as the leadacid battery and exempts maintains the accumulator cell the interface resistance,the voltage test, also the suitable each kind of battery experiments the scientific research unit and produces the factory experiment to measure the test.