I stopped paying the lease. They stopped guaranteeing to replace the batteries.
Bear in mind though that Citroen had stopped making the electric berlingo so it was a legacy issue for them. And they was no mileage limit....so I regularly drove 100 miles in a day in a vehicle with a range od 60 by opportunity charging. And by this point had lost all faith in Citroen, and was looking at putting in Lithium at some point. The Nicads though robust were wet batteries....you had to rig up ionised water dispensers to service them regularly (if not paying citroen prices).
So there was a saving to me from the lease costs and to Citroen from the battery replacement costs
What you tell may go some way to explaining this. During my thorough EV research I went in to Banbury Citroen to ask about the Citroen I Miev clone. They had never heard of it, 3 salesmen apparently with not much to do were all interested to know a bit about it from their interested customer though so gathered round and I gave them a 5 minute entertaining brief. The head salesman took my details and said he would find out more and let me know about the price/delivery etc that was last summer June/July.
At about the same time I also felt obliged to vist Banbury Renault to ask about the Zoe and the same thing happened, no salesman were specialist EV trained but were keen to hear what I already knew. They started off well by saying they were having a charge point installed and had a Kango ZE hidden round the back and which I had a look in. They couldn't offer anyone a test drive as the battery was flat and they had no way to charge it

. I made sure they took my details and asked them to let me know when there was a Zoe to test drive. I have heard absolutely nothing from Banbury Citroen or Renault garages since! Still no EVs out front and still no chargepoint AFAIK. Nissan do have a Leaf sales presence in town but with uncompetetive sales pricing. How many lost EV sales opportunities must there be accross Britain if my experience is common? They are effectively pocketing the 5 grand extra on every sale now too if ever they needed incentives! How effective will they be when that stops

?