The SKY THREE offers you 48V high power output for big LED lights. You can either use four 14.8V batteries to get a maximum output of 48V/750W or four 26V batteries to get a maximum output of 48V/1000W. The SKY THREE auto-identifies the incoming voltage. Please note, you cannot mix 14.8V & 26V batteries with this device. The maximum output allows you to use the SKY THREE with all LED lights up to a 1000W. If you are using two 14.8V or two 26V batteries alone, you will get a maximum output of 48V/480W. This device has protecting rubber corners and offers an incredibly compact design. The package includes a steel wire rope to hang the SKY THREE on a stand or mount it directly to a light fixture.