Would just like to say that I don't like FAST chargers.

A big problem with the 1/2hour chargers is that the battery gets very warm, and the heat drastically shortens its lifetime re charging cycles, but does, in my experience seem to effect the length of each actual charge as well.

I find 6-8 (12 if necessary) hours depending on capacity adequate.

Lets face it, if you need a battery NOW, it would make little difference if it was an hour away or 12 hours away, you still wouldn't have it NOW.