DOH! Are my batteries okay?

[gogglespaesano]

I was building my 5s2p A123 pack tonight and just as I finished wiring and getting ready to insulate everything, I shorted the packs for a split second.

How do I know if I ruined my battery, or one of the packs in parallel? I put the whole thing on my voltmeter and it reads 16.5v. I don't have any way of running the pack right now, waiting for the MMM to come out for my E-aftershock. I don't have a charger yet for A123 either, as I'm just piecing this thing together.

Is there any other way of checking both packs that are in parallel without splitting them up and testing them individually? What exactly happens when batteries short?

Any info is greatly appreciated.