The BMW i3 120 Ah is an upgraded version of the i3 with a higher battery capacity. Twice the capacity of the previous i3 which of course has an impact with roughly doubling the range. All this is done by increasing the capacity of the battery, without increasing its size or weight.
With the high voltage battery cell capacity increased to 120 ampere hours (Ah) and a gross energy content of 42.2 kilowatt hours (kWh), the new generation of high-voltage batteries enables the BMW i3 120 Ah to achieve a range of up to 153 miles, nearly a 30% improvement from the 94 Ah model and almost double its original range.