For what it's worth, I have several UPS (Uninterruptible Power
Supplies) since each computer gets its own. They are simple to open &
replace batteries. Complete Battery franchises have them. Get them
off the back of the shelf & ask how to interpret the date marks to buy
freshest batteries. I keep a 100 watt incandescent bulb in a clip on
flood light fixture to plug into the UPS. If I can't pull the AC plug
and keep the light brightly lit, the battery gets replaced. I usually
keep a spare battery for that purpose of each size. The best are
about 3 inches wide, four inches high and six inches long
(approximately). When power goes out, shut down the system.
Batteries are made to allow safe shut down, not keep a computer
running several hours. If you leave the computer turned on over
night, close everything so you don't lose data if power goes out.
Whenever a UPS is intermittently beeping and is plugged in with power
on nearby items, suspect the battery. Don't ever use a UPS on a
printer, which draws too much power and is not critical like data.
Mike Bauchan
On Mar 26, 2011, at 2:20 PM, Clark Martin wrote:
On Mar 26, 2011, at 6:44 AM, Bruce Johnson wrote:
On Mar 25, 2011, at 11:21 PM, Jane, (Portland, OR) wrote:
This may be related to the LogMeIn ------- or not. I have one of
those large rectangular UPS back ups that the iMac is plugged into.
Also in the past few days, the alarm has gone off several times. I
am
not sure exactly what that alarm means.
The alarm means that the UPS has switched to battery power, or that
the battery is failing. if this isn't accompanied by a general
power failure, it's usually the battery alarm. Check the UPS manual.
You can also get an alarm on low mains voltage. Best answer is to
RTFM.
Clark Martin
Redwood City, CA, USA
Macintosh / Internet Consulting
"I'm a designated driver on the Information Super Highway"
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