Would there be a local retailer of AGM batteries or would I order them
online?
-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
----- Original Message -----
From: "Travis Johnson" <[EMAIL PROTECTED]>
To: "WISPA General List" <[email protected]>
Sent: Monday, November 12, 2007 6:17 PM
Subject: Re: [WISPA] Which UPS to use?
Hi,
There are MANY, MANY considerations here... as we have done the same thing
at many tower sites:
First, make sure you fuse the cable coming out of the UPS to the battery
bank. We use 60A and 100A fuses depending on if we use two or four
batteries.
Second, I HIGHLY recommend sealed AGM type batteries. The ones at Walmart,
etc. are not the same quality as the AGM batteries for UPS systems, and
they have to be refilled with water about every 2-3 months (depending on
how often they cycle, etc.). The AGM are completely sealed and designed
for this type of use (thus that is the type in large UPS systems). They
also do not leak even if broken, and are designed to operate in cold and
hot environments.
And, with a 1000 UPS and two external AGM (110Ah) batteries, we can run 4
AP's, a large HP switch and a backhaul radio for about 30 hours.
The type of battery (size, style, quality) can make a HUGE difference.
Spend the extra money and get good batteries. :)
Travis
Microserv
John Valenti wrote:
Mark,
How much effort is involved in changing it over to the RV batteries?
You need to use two of them because that is what the SU700 is setup for,
right?
It seems to do OK charging these batteries that are considerably larger
than it was designed for?
Is the SU700NET the cheapest APC that accepts the smartslot cards?
I looked on EBay and only saw one listed, it was a buy-it-now for $25.
(George, RV batteries used to be about $60 at Costco / WalMart. )
thanks!
On November 12, at 2:42 PM November 12, Mark Nash wrote:
I buy used APC Smart-UPS SU700NET from ebay, without batteries. Then I
buy
a couple RV batteries and hook them up (outside the enclosure, of
course).
I put in a AP9617 SNMP device and it gives me a little remote control
w/e-mail notification. Doesn't do everything I want (PDU-ability to
power
off each receptacle individually, watchdog).
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