Thanks for your replies.
I have an Air Shield Pro, which I bought when the Aussie dollar was real good from the UK, at the time I was suffering from neck shoulder injuries, I tried it a few times and put it back in the box on the shelf, where it staid till last year when I had to remove all the render from the inside of the house. When the old render is removed it breaks into ultra fine dust.
For those that don't know what render is,
Find out how easy it is to freshen up an old brick wall with render. Learn how to render with this instructional guide from Bunnings.
www.bunnings.com.au
Of course when I got the Air Shield of the shelf the battery was dead, and wouldn't hold a charge, researching on the internet I found how to repack them but the smart charger the recommended not available in Aust. I repacked the original battery and bought a new battery and filters just in case, which was lucky 8 -10+ hours a day I needed both.
I bought a ubeat smart charger that charger that will charge Li-ion, NiCd, NiMH, etc etc.
Yesterday I was thinking there cant be too much inside the cradle just a Female Connector DC Plug connected to a couple of contact points that the sits against..