This is a as found back UPS system by the company Tripp Lite. we do not know too much about it, but it is heavy, and you are definitely free to make a offer, items like this are usually more valuable to someone who knows what it is, that being said, this item is undiagnosed, because like us, we don't want to goof something up, that is likely very fixable for a veteran. Any questions or concerns, we are happy to help, power cord present, plugged in, nothing happens. Thanks for looking.