Ipod Touch 5G
Thank you very much for your answer. But for other new apple ipod I already bought, Batteries were empty before initial use. This was already 50% full battery . So I think it is in fact nor an exchange for a new product, but a refurbished product. Indeed, the seller took the ipod from a carton box looking like refurbished. If it is the case, it would have been more honnest to tell that it was refurbished. Furthermore, I've asked him and he confirmed "no it's new..As it was one minute before store closing, I signed on the ipad without switching on the new Ipod touch for checking...
As number of battery cycles is limited, my doubt is mainly about how was used the battery before refurbichment : carefully that is following battery optimisation advises , or not. I don't know whether baterries are tested during refurbishment process.
I hope what I wrote could be understood, because I'm French and not used at all to speak english about such a subject...and also not very good for grammar.