Looking for a 12V powerpack?

[snowyskiesau]

If you're in the market for a 12v powerpack (battery), I've just seen some for sale at GraysOnline auctions.
The powerpacks are 18AH units and also have a compressor built in (can't think of an astronomical use for a compressor but then I'm only a beginner )

Here's the link: http://www.graysonline.com.au/catalo...ALE_TYPE=THUMB