My optimate's been PAT tested!

[Fazerider]

[quote author=Fazerider link=topic=2150.msg16216#msg16216 date=1331829568]
50V and above is regarded as potentially lethal, anything lower doesn't require testing

I thought PAT testing checked the state of the plug and leads as well.  Okay, it only outputs 12V, but if the plug, lead or case is knackered you could get a 240V jolt. 
I'd have thought the 50V rule applied to the supply voltage?
[/quote]
Exactly. The Optimate is mains powered so requires regular testing if it's to be used in the workplace (or happens to be there when the contractors come round). The OP was suggesting the bare 12V terminals of the battery meant it should have failed.