Batteries can be good or bad for the environment. They are great because they give you the ability to store energy and use it when you need it.

So electric cars can do what they can. They are terrible because making batteries emits a lot of CO2 and mining lithium destroys the atmosphere.

According to Deutsche Welle, 125 kilograms of CO2 emissions are associated with the production of 1 kilowatt-hour of battery capacity.

This means that a 22kWh battery (onboard the BMW i3) emits about 3 tonnes of CO2 into the atmosphere. Some studies have shown higher CO2 emissions (150 kg to 300 kg).

The Swedish Institute for Environmental Studies IVL, quoted by Deutsche Welle, 

reports that 350-650 megajoules of energy are used per kWh to produce batteries using current methods.

In addition, it should be noted that mining operations that produce the materials used for batteries are often a hotbed of human rights abuses.

They are commonly found in countries like China and the Democratic Republic of the Congo. 

These mines also completely destroy the environment, including problems such as deforestation, river pollution and soil pollution.

"Today, the manufacture of electric vehicles consumes more energy than the manufacture of traditional motor vehicles," said Yoan Le Petit, 

an e-mobility expert at the Brussels campaign group Transport and Environment, in an article by Deutsche Welle.