Voltage:12V Capacity:21Ah Dimension:66*71*155mm Charging current:2A Working Temprature:-40°C to 80°C Meet the requirements of :CE\RoHs\UL\FCC\KC\MSDS\UN38.3 Application:solar street lamp,energy storage equipment,etc Features: 1、Brand new A class Cell. 2、New Smart Lithium Battery Protector. 3、Free of harmful substances such as mercury, cadmium, lead, recycling, green safety. 4、Strict safety performance testing.