Need a portable work station for your iPad or laptop? Take a look at the only iPad backup battery lap desk, it may be a suitable solution.
This is a multi functional lap desk that measures 22 x 12-1/2 x 11 inches and weights 4-3/4 lbs. The lap desk sports a built-in 10000mAh backup battery, and comes with two USB ports on the lap desk surface in order to provide a convenient way to charge your iPhone and iPad or power its included gooseneck LED lamp. Moreover, the surface of the lap desk is able to tilt to nine different angles, allowing you to position devices at an optimal angle for typing or viewing, and its sturdy legs also adjust to three different heights. Apart from that, when not in use, the lap desk folds to the size of a laptop for easy to store or travel.
The only iPad backup battery lap desk is priced at $99.95 USD. If you like it, jump to Hammacher Schlemmer for more details.