1. 8095-1. Which of the following best describes the operat ing principal in a nickel-cadmium battery installed in an aircraft? A. At full charge, the electrolyte will be at its lowest level and should be filled. B. To completely charge a nickel-cadmium battery, some gassing must take place; thus, some water will be used. C. When positive plates slowly give up oxygen, which is regained by the negative plates, the battery is charging.