I tried a 80 watt and a 120 watt with 12vDC. The 80watt was spec'ed at 16v and the 120 at 24v. The pelt that came with the V-10 was rated at 70watts at 21v. I wasn't expecting a miracle but I was expecting a couple of extra degrees in heat reduction. I was wrong
To get any real performance out of a tec you need to use a monster like the 400 watt 52x52mm tec popular with tec chillers. It needs some serious juice though... And the hot side really *needs* to be water cooled.