I have a pair of A123 packs, both, I believe, are 1800 mah (but I could be wrong, and it doesn't matter), but have not run them through the Voltwatch. I am not quite sure if the voltwatch is spec'ed for the slightly higher voltage or not, althogh it isn't that much higher.

I've not used Voltmagic but it sounds interesting. Where did you get them, Tom?

CGr.