Hi everyone, I've got a Uninterrupted power supply battery back up for sale that is brand new and still in its package. Here is a link to the make and model: APS 750VA 450watt UPS<http://www.amazon.com/APC-BE750G-Saving-Battery-Back-UPS/dp/B000Z80ICM/ref=sr_1_1?ie=UTF8&qid=1331245943&sr=8-1> Use this to keep your computer running during power outages or to run business critical systems. Brand new UPS retails for 79.99, I'm willing to sell for mine for 50.00!