A battery constructed from three 3V, 20 Ah cells in series what is nominal capacity? All Questions › Category: Electric Vehicle › A battery constructed from three 3V, 20 Ah cells in series what is nominal capacity? 0 Vote Up Vote Down chetan shidling asked 5 years ago 10 Ah 20 Ah 40 Ah 60 Ah 1 Answers 0 Vote Up Vote Down chetan shidling answered 5 years ago The correct answer is 20 Ah. Because cells are connected in series.