From Manufacturer
Power your camera, laptop, smartphone, lighting kit, and other on-set gear with this V-mount Tether Tools ONSite D-Tap Battery Kit with AC Power Supply put together by B&H. This kit includes a 150Wh ONSite V-mount battery with two 14.8V D-Tap outputs, and an AC power supply that features four USB and two 3-prong AC outputs.
This versatile kit allows you to directly power your V-mount camera while also providing 10A power to other accessories through two D-Tap outputs. The AC power supply can plug into one of the D-Tap ports to draw power to four 2.1A USB Type-A ports to power smartphones or tablets, and it features two 3-prong 110 VAC outlets to power a laptop, LED light, or other accessory with an AC plug, all from the same battery.