Yep, thats a good solution for 300w load. But we are looking for handling much larger loads.
We use the C&D 150AH 12V batteries, which are about $330 each, which we usually stack 4 in series for 48V. In theory our PC routers don't draw much current, for average basic operation, but they are powerful boxes that are spec'd with High watt power supplies. (QUAD CPU). So 500W power supplies each. Feasibly, we could imagine two of these PC routers. If we had different routing policies or wanted redundancy. Then if we add 4 or 5 Licensed Links, the Wattage grows significantly on these units compared to low power unlicensed radios.(forget exactly how much). Then another 10 or so unlicensed, but they'll only draw about 10 watts. Then add a GB switch or two (100watts each). We really want to handle atleast 2000watts per unit, and then want minimum of 12 hour run-time. Do you know how many AmpHours (Ah) the APC XL Ultra Battery pack is spec'd at? Tom DeReggi RapidDSL & Wireless, Inc IntAirNet- Fixed Wireless Broadband ----- Original Message ----- From: "can...@believewireless.net" <p...@believewireless.net> To: "WISPA General List" <wireless@wispa.org> Sent: Wednesday, January 21, 2009 7:14 PM Subject: Re: [WISPA] We're being DDOS'd by DC! > Here's what we just started using: > APC Smart-UPS 1000 XL - $500 > APC XL Ultra Battery Pack 24V - UXBP24 - $500 > APC Management Card - $200 > > The downside to this is that it isn't a rackmount solution. The external > battery pack is BIG as it houses four "car" battery-sized batteries. > These > are chainable too which is nice. > > Based on a 300W load, here is the uptime you'll see with the battery > packs: > > SUA1000XL + (1)UXBP2411 hrs 57 minsSUA1000XL + (2)UXBP2424 hrs 31 > minsSUA1000XL > + (3)UXBP2435 hrs 43 minsSUA1000XL + (4)UXBP2446 hrs 55 mins > > So, for $1,200 you'll get a UPS w/monitoring and nearly 12 hours of > uptime. > Drop in > another UXBP24 for every additional 12 hours of uptime you need. > > > On Wed, Jan 21, 2009 at 6:27 PM, Tom DeReggi > <wirelessn...@rapiddsl.net>wrote: > >> Thats why we liked the triplite inverters. They had a 33amp charging >> circuit >> (required 40 amp breaker), and the charge voltage varied based on the >> type >> of battery. >> This was my fear with using Smart Ups. They were designed for lead acid >> batteries, which have different characteristics than Gel batteries, or >> the >> other type (VLRA?). >> >> One thing we didn't like about the Triplite Smart UP XL series at high >> VA, >> was they were deep as hech, to accommodate a lot of internal batteries. >> I >> preferred a unit that had a shorter depth. The Triplites also have >> different Voltage requirements for its batteries. I found one of the >> models >> that did support 48V. >> >> Although I did not look into APC's XL series yet, as Patrick suggested. >> >> Its tough getting the facts out of APC and trriplite, because oif course >> they all want to sell you theirown battery packs, which are way over >> priced >> by a factor of 6X minimum. >> >> >> Tom DeReggi >> RapidDSL & Wireless, Inc >> IntAirNet- Fixed Wireless Broadband >> >> >> ----- Original Message ----- >> From: "jp" <j...@saucer.midcoast.com> >> To: "WISPA General List" <wireless@wispa.org> >> Sent: Wednesday, January 21, 2009 2:35 PM >> Subject: Re: [WISPA] We're being DDOS'd by DC! >> >> >> > We were having trouble with the APC rackmount UPSs getting flaky, so >> > that's why we went elsewhere. The 2U smartups tended to fail by >> > overcharging the batteries causing them to bulge to the extent the >> > batteries could not be removed except by complete disassembly of the >> > UPS. We had 3-4 UPSs taken out of service for this reason. I had a 3U >> > smartups start to pulse the output power and it killed a computer in >> > the >> > process, and I've had the 3u fail to take advantage of a new battery >> > pack. >> > >> > That said, the APC units work mostly flawlessly within a datacenter >> > with >> > proper cooling. However, out in the field in cold barns, basements, >> > outdoor cabinets or warm closets, they haven't been sufficiently >> reliable. >> > >> > The tripplites have different charging rates, the 700hf is 6amp, the >> > 750 >> > is 20amp I think, the 1250 perhaps more. This lets me recharge quickly >> > and be ready for another outage. If it's on generator power, it means >> > the batteries can be fully recharged before we run out of gas. >> > >> > On Wed, Jan 21, 2009 at 10:49:15AM -0800, Marlon K. Schafer wrote: >> >> I wondered about just swapping out the batteries on my APC units and >> >> instead >> >> hooking the units to bigger batteries. My fear is that the chargers >> >> won't >> >> hold up to long charge times that would be needed for a big marine >> >> battery >> >> instead of a little exit light battery.... >> >> >> >> Thoughts? Anyone already tried this? >> >> marlon >> >> >> >> ----- Original Message ----- >> >> From: "jp" <j...@saucer.midcoast.com> >> >> To: "WISPA General List" <wireless@wispa.org> >> >> Sent: Wednesday, January 21, 2009 8:36 AM >> >> Subject: Re: [WISPA] We're being DDOS'd by DC! >> >> >> >> >> >> >I like the tripplite APS 700hf/750/1250 gear. >> >> > >> >> > We've got sites with 2 big batteries that should be good for 24 >> >> > hours >> >> > with these. >> >> > >> >> > I put one at my house after going through 2 APC UPSs in 8 years. >> >> > >> >> > We put them everywhere we need long run time, and add batteries for >> >> > places where it's impractical to take a generator. >> >> > >> >> > I don't mind freely recommending them. My competition has already >> >> > seen >> >> > how well they work at a mountaintop site where we are both located >> >> > and >> >> > has since followed that route in the interest of long runtime. >> >> > >> >> > On Wed, Jan 21, 2009 at 07:07:19AM -0800, Marlon K. Schafer wrote: >> >> >> Yeah. But they don't last forever. >> >> >> >> >> >> I've also found that they drain faster than they charge too. >> >> >> >> >> >> Right now I have rolling power outages in at least 4 towns spread >> >> >> out >> >> >> by >> >> >> a >> >> >> good 80 miles via road. The power is on, then off then on then >> >> >> off. >> >> >> It's >> >> >> not like I can just got to town A and fire up a generator. >> >> >> >> >> >> Plus, these towns combine for a total of 11 sites! I don't have >> >> >> that >> >> >> many >> >> >> generators. >> >> >> >> >> >> Wanna know the funny part? In Wilbur, AT&T's cell tower has been >> down >> >> >> more >> >> >> than I have! grin >> >> >> >> >> >> People still had phone service most of the time. One of the cell >> >> >> phone >> >> >> companies stayed up. If there was NO communications infrastructure >> in >> >> >> place >> >> >> I'd have worked harder to keep things running. Without help and a >> lot >> >> >> more >> >> >> generators/gas cans it just wasn't possible though. >> >> >> >> >> >> The weather is supposed to break today or tomorrow. I don't know >> how >> >> >> long >> >> >> it'll take to clean up all of the broken limbs etc. though. >> >> >> >> >> >> laters, >> >> >> marlon >> >> >> >> >> >> ----- Original Message ----- >> >> >> From: "George Rogato" <wi...@oregonfast.net> >> >> >> To: "WISPA General List" <wireless@wispa.org> >> >> >> Sent: Tuesday, January 20, 2009 9:22 PM >> >> >> Subject: Re: [WISPA] We're being DDOS'd by DC! >> >> >> >> >> >> >> >> >> > Don't you have battery back ups? >> >> >> > >> >> >> > >> >> >> > Marlon K. Schafer wrote: >> >> >> >> Looks pretty normal around here. But some of our towers are >> >> >> >> offline >> >> >> >> again >> >> >> >> due to all of the power outages. >> >> >> >> marlon >> >> >> >> >> >> >> >> ----- Original Message ----- >> >> >> >> From: "Eric Tykwinski" <eric-l...@truenet.com> >> >> >> >> To: "'WISPA General List'" <wireless@wispa.org> >> >> >> >> Sent: Tuesday, January 20, 2009 9:52 AM >> >> >> >> Subject: Re: [WISPA] We're being DDOS'd by DC! >> >> >> >> >> >> >> >> >> >> >> >>> Everyone on NANOG has been saying the same. We're actually >> seeing >> >> >> >>> close >> >> >> >>> to >> >> >> >>> triple on downloading today, starting about 9AM EST. >> >> >> >>> Thankfully no issues on capacity at all on our end... >> >> >> >>> >> >> >> >>> I'm actually surprised the sites serving the videos aren't >> >> >> >>> having >> >> >> >>> any >> >> >> >>> issues >> >> >> >>> yet. >> >> >> >>> >> >> >> >>> -----Original Message----- >> >> >> >>> From: wireless-boun...@wispa.org >> >> >> >>> [mailto:wireless-boun...@wispa.org] >> >> >> >>> On >> >> >> >>> Behalf Of David E. Smith >> >> >> >>> Sent: Tuesday, January 20, 2009 12:46 PM >> >> >> >>> To: WISPA General List >> >> >> >>> Subject: [WISPA] We're being DDOS'd by DC! >> >> >> >>> >> >> >> >>> Not really, but is everyone else seeing lots of extra traffic >> from >> >> >> >>> people >> >> >> >>> streaming inauguration-related events in DC? My network is >> pulling >> >> >> >>> basically >> >> >> >>> double the traffic of a "normal" Tuesday. >> >> >> >>> >> >> >> >>> (There's a lesson about capacity planning in here somewhere...) >> >> >> >>> >> >> >> >>> David Smith >> >> >> >>> MVN.net >> >> >> >>> >> >> >> >>> >> >> >> >>> >> >> >> >>> >> ---------------------------------------------------------------------------- >> >> >> >>> ---- >> >> >> >>> WISPA Wants You! 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