[3551] in RedHat Linux List
Re: UPS reccomendations
daemon@ATHENA.MIT.EDU (Paul J. Mech)
Sat Nov 9 03:31:56 1996
Date: Sat, 09 Nov 1996 03:34:30 -0500
From: "Paul J. Mech" <paul@coil.com>
To: redhat-list@redhat.com
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
jrd@jrd.com wrote:
>
> Is it possible to wire car batteries to a UPS in parallel
> to increase runtime? Somewhere I once heard that
> it was possible. I have a BACK-UPS 900 and I'd like
> to add some muscle to it.
The answer is yes and no. I have used UPS's that had a deep cycle marine
battery in them. The manufacturer explicitly encouraged attaching other
such batteries by meand of jumper cables. This was, however, something like
a 3000 Watt powersupply that drove a small network. I would have great
caution attaching a car battery to a small power supply. There are several
potential mismatches that may occure. Not the least of which is the ability
of the car battery to deliver far more amperage than a small UPS can handle.
In case of a short, your inverter might blow before the fuse does. At the
least, I'ld council discussing the matter with the manufacturer first.
pjm
-----------------------------+------------------------------------------------
Paul J. Mech | Remember!
paul@coil.com ... or ... | ;-) for the humor impaired
pmech@freenet.columbus.oh.us |
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