CATL & BMW Johnt venture, producing high quality lithium battery in North of China. CATL-120 CATL Battery Cell is one of most popular LiFePO4 Battery cell with capacity of 120AH. hundreds of batteries in stock. CATL NCM 50AH Lithium Battery At this moment, the CATL NCM 50AH Lithium battery is very popular. a lot of gaint auto company like BMW Tesla . Elon Musk's Tesla is the most obvious beneficiary of investor interest in batteries. The electric-vehicle maker led my list of top battery stocks to buy in 2017 (and its stock rose 48% As of 2019, Panasonic is the largest producer of Lithium-ion batteries for electric mobility at 23GWh, followed by Contemporary Amperex Technology (CATL) with a capacity of 12 GWh, and BYD. [failed verification]CATL produced 11.8 GWh of battery capacity in 2017, an increase of over 74% from 2016. Japan’s Panasonic was the second largest manufacturer with 10 GWh, and BYD was third with 7.2 GWh.