“…Firstly, we must carry on the definition of scope, choose model B2B and calculate CF of li-ion-battery, at the same time, we will research the consumption of material and energy and the emissions of greenhouse gas in the processes of raw materials acquisition, processing, manufacturing, transportation and using [14]; Secondly, we should collect plenty of data, the data include primary activity level data and secondary data, it mainly is raw material consumption, energy consumption in the processes of production and transportation and carbon emissions factor, and we should also show a clear statement of account; Finally, we will calculate the CF of li-ion-battery in the life cycle, in the process of calculation, on the basis of carbon dioxide, we change the emissions of other greenhouse gas into the emissions of carbon dioxide by using GWP, and show it with CO2 eq.…”