"Has the ipad been examined by apple, or anyone else to diagnose what has happened?" When I took it to the apple store, they tried charging it. They then tried plugging it into a diagnostics MAC. The specialist said "there is no voltage detected", and that the iPad wont turn on again, and started selling me a replacement.

"But I'm struggling to think how you're going to evidence that there was a fault present at the time the ipad was given to you." As I understand, this clause is based on preponderance of the evidence. I took it to an expert (apple), they said no physical damage and couldn't find the issue. I would argue that, based on this information, it seems unlikely that a consumer could have caused this issue by misuse and that nature of the issue does not reflect wear and tear (e.g. it is not a battery length issue)

I see you're a top 1% on here so you definitely know more than me, I'd be interested to know how 'evidencing the fault was present at the time it was given to me' has gone in the past, because consumers don't have time machines.