I switched it on at 7.30am this morning when unwrapping it. Played non-stop till posting this up and it had 30mins left on the battery. This was only on a 75% charged battery as it came out of the box. So I would suggest that the rumoured battery issue is not all that.
I personally think Nintendo may of had their day tbh.
Everything thought the big N and Sega had the console market stiched up until Sony released the PS..... and even then they thought it would never last. lol
I'm no Sony/PS fanatic by any stretch of the imagination, just facing a possible fact.