mine has light that indicates "Grounded". when it is initially plugged in
and the light is out, the thing doesnt run.

even with full battery charge.

"Michael Kennedy" wrote in message
...

i am surprised the APC even works without a proper ground circuit! most
will fail to start when ungrounded.

Sorry but you are incorrect. I have used various APC UPS models from a
smart-ups 300 to a 1500, an old APC power cell model, and also APC
Back-UPS
1200 and a Back-ups pro 500 without a ground. All of these models will
function without a ground.