Assuming the camera(s) you are using are the type that only use less than 10 watts each, then yes. I have a power hungry desktop PC, 2 monitors, a router, and 2 network storage systems plugged in. At least 4 of those, including the PC are plugged into the battery backup ports, and the digital display tells me I have A LOT of time available on battery power should the need ever arise. So your camera(s) should do just fine. I hope that helps!