where is TB48 ...?  since 3 months on website, impossible to buy .? why ?

That's because you are in Europe and there are restrictions when shipping that size battery by air.
Change the country to US in the DJI shop and you will see it there.
Local dealers can probably supply it to you.

Hi Johan, as paul mentioned, it´s a restriction of the country. If i visit dji.com, i can not buy the tb48 either.

But, if you need some TB48, try droneparts.de. They have some in stock right now and they ship worldwide. Great service, fast shipping.
It´s my local dealer and i am very happy with it.

Cheers, Christian