When a nickel-cadmium battery begins gassing while connected to the battery charging circuit, what should be done?

Correct Answer: Option B — do nothing as this is a normal condition when charging

Gassing in a nickel-cadmium battery during the final stages of charging represents the normal electrolysis of water into hydrogen and oxygen as the cells reach full capacity. No corrective action is required beyond maintaining proper ventilation in accordance with IEEE 45.