OK Here is the story... I used Amazon to buy this
RNB Rechargeable Battery Pack for Minelab Vanquish ... $74 shipped
Return policy: This item is non-returnable

They sent ...
NB ML-3400 Battery Pack for Minelab Metal Detectors E-Trac Explorer Safari Quattro ... $114 shipped

I can not get past the Robot Assistance Chat .. I think I sent a request refund / exchange

So here is the deal send me a battery pack for the Vanquish plus $11 to ship the ML-3400

If I had a FBS Detector I would just keep the battery