On Thu, 12 May 2016 16:16:38 -0500, Mark Lloyd
wrote:

On 05/12/2016 11:39 AM, wrote:

[snip

A battery will usually fix those "Bad" UPSs. They are not horribly
expensive online. That is why I have so many units around here. They
all came with bad batteries for free. I still have a few dead soldiers
back in my shop but I am UPSed out here. ;-)
There only seems to be 2 basic sizes with either 1 or 2 in each UPS
(APC).

This UPS is one of those APC units that look like a fat power strip. It
could be a bad battery, that drops the voltage too much with more than a
little load. It's something to consider when I need a new UPS for a
computer.

The 550-600 type? They have one battery and you don't even have to
take it apart to get the battery out, There is a door in the back.
Those are fairly cheap but be aware there are lots of model numbers
for essentially the same battery. Watch the size and amp hour rating.