This Agilent (9V) Battery powered ion pump High Voltage power supply is used to power ion pumps during transportation phases in order to prevent air entering the pump. Comes with 9V battery, velcro and power supply. The power supply runs on an input from a standard 9V battery and outputs a non-regulated voltage between 3.0 and 1.5kV, with a factory set negative output polarity. Utilizes Fischer Connection. For instructions on how to use this battery powered ion pump power supply see user manual .pdf below.