I had ordered a battery for my Playstation controller. I wanted to send this back only because he had the wrong plug. So I started the return on ebay and waited. An hour after the request for return, I noticed that both batteries (age broken and new) have the same volt number and therefore from the old battery the plug with the cable made and attached to the new battery somehow. So I have not damaged or changed the new one. Everything was rebuilt and it worked. So I searched the internet for canceling a return. I read on the internet that I should just press return to close. I did that too. But now I notice that the battery is not charging. Now my question is how can I send him back / refund?
Just start again if it is still within the normal time limit. Are you just "accidentally" gone to close…
That will not do:
Case closed once = closed forever.
Now my question is how can I send him back / refund?
Now you have to agree with your UK without eBay:
Closed cases remain closed and can't be opened again, for eBay, the matter is closed.
Sounds to me as if the ebay support could help you there, if you do not have the buttons anymore.
A return resp. A revocation is legally different from a complaint. If I understand you correctly, the battery is defective. This is not a withdrawal, because the seller could send you a non-defective battery in exchange, and you both are satisfied.
New case, not old open again.
That too is not possible:
You can only open one case per article, for eBay, the drops are sucked.
The eBay support can, may and will definitely not help here, as eBay is not involved in complaints; the questioner must be able to cope without eBay, without ifs and buts.
I admit, I last sold something on ebay for ages. Previously there was a button where you could choose: "The article is broken" btw. Then "The article deviates significantly from the article description", and thus one has opened a buyer protection case. I assumed that it still exists and the questioner is no longer displayed only because of a system problem.
That still exists and the asker has also used it:
Case opened, closed again, that's it.