Dear @morten_olsen,
I’m sorry to see this. I can’t speak to your particular situation, so I’ll let our customer support write you when we’re back in the office (tomorrow, 24 Nov).
The batteries are specific to each phone model from a sub-supplier separate from our Changhong/Guohong manufacturer and may not be the same batteries used for another phone. Including similar models made in the same manufacturer. But our support team will tell you more via email.
Best,
Joe