I hypothesized that Nikon brought about 5000 D800's into the US in the initial month's shipment (seems like so long ago now ;~). Information just published in Canada via their recall process gives us a new data point to consider: the EN-EL15 battery recall affected 5100 units in the US. Since this lot of batteries was pretty much isolated to the D800 at the time, the only question is whether that D800 shipment batch all had affected batteries or not. Don't know the answer to that question, as I don't have enough sample points. Update: it appears my first update was incorrect; I now see batteries from three different shipments of the D800 models into the states, most centered on the second big shipment.