I have an all new mobile key-board with integrated battery for the Dell Location 11 pro. It provides an added 10 hour electric battery life to your ipad. I got this as a gift, but i do not require a keyboard for my tablet computer.
http://accessories.dell.com/sna/products/Tablet_PC/productdetail.aspx?c=ca&l=en&s=dhs&cs=cadhs1&sku=332-2365.
I desire $140 COMPANY.