I have many APC battery backup units leftover from Y2K supplies. Purchased a rackmount and no longer need as many. These are not the cheapie power-strip types at office supply stores. These are the heavy duty lawnmower battery ones used in server rooms. 650s are about 5" wide, the 400s and 500s are about 3.5" wide, all about 15" deep and about 6" tall.

Very heavy. Local pick up only. $10-65 each.

Batteries tested and work fine. Purchased in most in January 2000. A few units have weak batteries and I can let them go for a discount ($10-15) if you're gonna put in new batteries. I used these often during hurricanes and floods for neighbors who lost power. Have powered 36" tv's off these suckas.