BEIJING -- China's installed capacity of power batteries saw steady growth in May amid the boom of the country's new energy vehicle (NEV) market, industry data showed.

Last month, the installed capacity of power batteries for NEVs rose by 90.3 percent, year-on-year, to a total of 18.6 gigawatt-hours (GWh), according to the China Association of Automobile Manufacturers.

Specifically, about 10.2 GWh of the lithium-ion batteries were installed in NEVs, up 126.5 percent from a year earlier, accounting for 55.1 percent of the monthly total.

According to the association, China's NEV market maintained rapid growth momentum in May, with sales skyrocketing by 105.2 percent year-on-year to 447,000 units.