http://www.air-2.com/
Air2 are the company behind the vapir range of vaporisers. They're mid-level products ($150 - $300) and include a range of portable, battery powered as well as table top vaporizers.
http://www.volatizer.com/
The volatizer is a sophisticated handheld, portable, battery powered vaporising unit. It uses a lithium polymer battery and costs $500 USD.
