I love my PartyQ, but like so many others, I wished it has an alternate power supply built in.
I borrowed this idea from someone else, so I can't take full credit, but here's the process for anyone interested. It's really simple and inexpensive.
The fan runs on half an amp, so I purchased a 6V, 1 amp power adapter (Amazon link below) and modified it.
http://www.amazon.com/exec/obidos/ASIN/B00COCGL8M/tvwb-20
I cut the tip off, stripped the wire and attached the exposed wires to a couple screws I had laying around, and screwed them into 1/2" wooden dowels, then taped the wires down with electrical tape.
Sorry this picture is a little blurry.
The red wire goes to the positive terminal, and the black wire to the negative.
I cut a small notch in the plastic base and battery cover to allow the wire through.
And here she is plugged in and running. I haven't cooked with it yet, but I let it run on my counter for a while and everything seemed to work great. Nothing shorted out or got hot, so that's good.
One word of advice would be to install the wood "batteries" before plugging it in. You wouldn't want to touch the screws when the adapter is plugged in.
I can't wait to use this the next time I cook and really be worry free. Having the batteries crap out half way through a brisket really stinks.