... &D and advanced producing machine.Factory large lithium-ion battery 12v 6ah Coming with 2A~3A 14.6V matching charger under ... , uninterrupted power source (UPS)3.Power transmission and transformer station, switch-control, and accident lighting4.Fire fighting, safety device, and alarm ... ! Warmly welcome to visit TOPBAND! Factory large lithium-ion battery 12v 6ah