Not to bring back a dead thread but the ez-b v4 Setup im using would be 3 ping sensors, and a heavy duty servo (on separate voltage). If the ez-b is getting 2 Amps, and the heavy duty servo is separate power will it work?

Well technical it's still an unresolved question - don't forget to mark it as resolved once it is.

Check the datasheet for the ping sensors, they are 15mA each. 3 x 15mA = 45mA. So yes, it should work off of a 2A supply.

Min voltage for the V4?

You need a steady 5v for the ping sensors. I expect the EZ-B will run on 5v (it has been posted previously).

Thanks rich.