Ok - due to the peculiarities of YouShop and shipping (perfectly safe alkaline non-lithium ) batteries, I have a 4.5v Mac Plus battery in limbo which I can forward to one of our US based people. If no takers, I'll ask Youshop to bin it.
Now I know how the wife felt when NZ Couriers wouldn't deliver her Dior "dangerous goods" from StrawberryNet.
Bah!