Does anyone know if there is a battery, of the same size and spec. for another mobile that would fit this. Unfortunately as yet, here in the UK, they are not available. This is apart from one supplier that I have found who quotes a very expensive price, probably because of their rarity at the moment.
It is a great pity that makers and suppliers of these kinds of things do not follow through with more adequate accessories and support. Even my enquiries direct to GoClever seem to have been ignored, which is most disappointing.