A tester for nickel cadmium defibrillator batteries

A microprocessor-controlled tester for nickel cadmium batteries is described. This versatile instrument allows up to three cycles of charge and discharge to be performed automatically, with results presented in hard-copy form. The tester determines whether defective cells are present in a battery by comparing the discharge characteristics with previously established values. Batteries can also be discharged in a way which simulates their use in defibrillators.