Hi Edouard and Lithium battery changers worldwide
Well I thought about things a lot the batteries are not hard to change, but their not exhausted and they are expensive, so would cost about ?20 - $35 ? a year, annoying if there is nothing wrong with them.
I've contacted Amazon.co.uk this morning, no hassles, full refund will be forthcoming, returns label is printed.
It will cost a bit more but I'll probably buy a basic wireless Vantage Pro 2, will give me the option of having the Anemometer sited better for wind measurements with the rest at a good height for rainfall.
I've been very impressed with JohnD of Prodata weather systems over here in Cambridge, he contacted Brett Lane about the Vue battery problems for me, looks like he might get some business from me soon.

JC