Look for a POWERVAR model ABCE150-11M2. It has an IEC plug and
connector for 120 Volt in and out along with a yellow SB-50 connector
for the 12 VDC battery connector. Compatible with LiFePO4 and SLA
battery chemistries
On 9/15/2016 6:21 PM, Mark Spencer wrote:
They do exist. I've seen them in service at Telecom sites outside of the U.S.
and Canada. I believe there was a thread re this a few years ago ?
Sent from my iPhone
On Sep 15, 2016, at 3:13 PM, Jeremy Nichols <jn6...@gmail.com> wrote:
Since I have a 12V 100 A-H gelled electrolyte battery as a
short-term backup (for those outages not worth firing up the generator),
I'd like to find a UPS that uses an external battery. So far I don't see
such a thing--do they exist?
Jeremy
On Thursday, September 15, 2016, Bob Camp <kb...@n1k.org> wrote:
Hi
It’s been quite a while since I bought anything other than a pure sine
UPS. They really aren’t as expensive
as they once were. You may find them a bit cheaper from outfits like
CyberPower than from APC. Sometimes
it s a bit tough to work out exactly what is or is not a pure sine wave
unit. If you want a full “always on” pure
sine device, they are still a bit expensive.
Bob
On Sep 15, 2016, at 2:13 PM, Jeremy Nichols <jn6...@gmail.com
<javascript:;>> wrote:
Your point is well made. My question is: what happens to the quality of
the output sine wave if I use anything other than a true sine-wave (i.e.,
expensive) UPS? Most of them these days produce a semi-sine wave (aka
modified square wave) that may or may not play well with the 105B. Anyone
have experience?
A external battery and appropriate chargers and cabling does sound like
another good alternative. Harder to move around but I don't (yet) have such
a need, only that the 105B stay "on" regardless of power failures.
Jeremy
On 9/15/2016 10:15 AM, Bob Camp wrote:
Hi
A bigger question becomes:
Do batteries inside equipment make much sense anymore?
These days, a UPS is often a standard part of a rack in an outage prone
area. Powering
the “whatever” instrument off of the same UPS as the rest of the stuff
is one obvious
answer.
The other answer is an even older approach. Use a battery bank that is
external to all
the gear in the rack and tend it independently of each box in the rack.
That way you have
a few very large cells to worry about rather than a whole bunch
scattered about. Things like
lead acid that are impractical in a piece of gear are more of an option
in an independent
battery box. A single charger / line supply makes it easier to invest
in something with real
smarts in it. The advent of dirt cheap isolated switchers makes the
conversion to instrument
voltages a lot easier than it once was. Pick a common voltage like 12,
24, or 48V and run with it.
My answer to the frequency standard battery pack question has become
“don’t do it”. It makes
them a *lot* lighter weight !!!
Bob
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