We've updated out @CarbonBrief analysis of the climate impacts of electric vehicles in light of rapidly falling carbon intensity of electricity in countries like the UK and a large revision downward of battery manufacturing emissions by IVL: carbonbrief.org/factcheck-how-… 1/3 
Our previous version of the article used the 2017 IVL review of battery manufacturing emissions, which estimated them at 150-200 kg/kWh battery capacity. The 2019 revision uses data from commercial scale manufacturing plants and find only 61-106 kg/kWh (upper bound of 146): 2/3
More broadly, recent studies of lifecycle battery emissions all suggest around 100 kg/kWh or below, though there are still differences based on how electricity used in manufacturing is produced. If 100% renewables are used, this number drops as low as 60 kg/kWh. 3/3
