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).
--------------------------------------------------------------------------------
WISPA Wants You! Join today!
http://signup.wispa.org/
--------------------------------------------------------------------------------
WISPA Wireless List: [email protected]
Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless
Archives: http://lists.wispa.org/pipermail/wireless/
--------------------------------------------------------------------------------
WISPA Wants You! Join today!
http://signup.wispa.org/
--------------------------------------------------------------------------------
WISPA Wireless List: [email protected]
Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless
Archives: http://lists.wispa.org/pipermail/wireless/
