A battery constructed from three 3V, 20 Ah cells in series what is nominal voltage? All Questions › Category: Electric Vehicle › A battery constructed from three 3V, 20 Ah cells in series what is nominal voltage? 0 Vote Up Vote Down chetan shidling asked 4 years ago Options: 6 V 12 V 8 V 9 V 1 Answers 0 Vote Up Vote Down chetan shidling answered 4 years ago The nominal voltage is 9 volts.