LG Chem was the world's top seller of electric vehicle (EV) batteries from January to August and CATL, China's largest automotive lithium-ion battery maker, was second, a South Korean market research firm said Monday.

According to SNE Research, LG Chem has a 25 percent share of the global EV battery market; Chinese battery maker CATL ranks second with a 24 percent market share; Japan's Panasonic ranks third with a 19 percent share.

From January to August this year, LG Chem's global EV battery usage was 15.9GWh, accounting for 24.6% of the total EV battery volume (64.7GWh) in the same period, the highest share.

CATL ranked second with 15.5GWh (24.0%). Panasonic follows with a share of 12.4GWh (19.2%). It is followed by manufacturers such as Samsung SDI, SK Innovation, and BYD.

China, one of the largest markets in the world for new energy vehicles, has made significant progress in terms of on-board power batteries.

As of August this year, China's installed capacity of power batteries was 5.1 GWh, up 48.3% year-on-year.

The first ranked power battery in terms of cumulative installed capacity this year is CATL, with 13.63GWh installed in January-August, accounting for nearly 50% of the market share.

BYD is second, with an installed capacity of 3.79 GWh from January to August, accounting for 13.7% of the market.

LG Chem is third, with a cumulative installed capacity of 2.72 GWh for January-August and a 9.9% share of the market.

With CATL starting to supply Tesla, Tesla's market share will increase further with its trend of selling more than 10,000 units per month.