I have an EGO battery that's not working. When I press the button the light comes on but get no vapor off of any of my assorted clearos and atomizers.Metered battery with button pushed and get 4.0 volts. Since egos have known issue of center pin being pushed down I tried lifting it with jewellers screw driver and was no go.
Any suggestions on what issue may be would be appreciated. Thanks in advance.

