It sounds to me like Pat's issue is the power is bad enough there that the UPS is going to invert often and it's killing his batteries because the UPS charges a lot more slowly than it discharges the batteries when it's inverting. There's a ratio of invert to charge time that if you exceed it can't keep up. I suspect if he just added a battery charger to what he's presently got he would find his batteries would last as they should. That would explain the battery issue, but why are the UPS going bad?
Greg On Sep 20, 2011, at 3:53 PM, Josh Luthman wrote: > If you are NOT worried about uptime, you could get an APC 1500 or 2200 with > an AP9617. Those units are quite good, but they're AC/DC/AC/DC from utility > to your radios. I think 80 watts gets you an hour of uptime? > > I've never had a unit go bad, I always buy refurb'ed units and new batteries. > Running three of them for a couple of years now. > > Josh Luthman > Office: 937-552-2340 > Direct: 937-552-2343 > 1100 Wayne St > Suite 1337 > Troy, OH 45373 > > > On Tue, Sep 20, 2011 at 4:16 PM, Patrick D. Nix, Jr > <[email protected]> wrote: > I thought like +/- $200.00 > > > > > > From: [email protected] [mailto:[email protected]] On > Behalf Of Greg Ihnen > Sent: Tuesday, September 20, 2011 2:40 PM > > > To: WISPA General List > Subject: Re: [WISPA] Power for tower sites > > > > How much do you want to spend? > > > > Greg > > > > On Sep 20, 2011, at 2:17 PM, Patrick D. Nix, Jr wrote: > > > > > What’s a good model to look for? They seem kind of pricey. > > > > > > From: [email protected] [mailto:[email protected]] On > Behalf Of Greg Ihnen > Sent: Tuesday, September 20, 2011 12:11 PM > To: WISPA General List > Subject: Re: [WISPA] Power for tower sites > > > > I was going to mention Xantrex as a contender. They used to be Trace > Engineering. They make a decent inverter. Tripp Lite makes some special high > quality high reliability inverters for things like ambulances if you need > something a cut above. The cream of the crop is the Outback. > > > > Greg > > On Sep 20, 2011, at 12:36 PM, Dorn Hetzel wrote: > > > > > > I have had good luck with some of my servers using a xantrex inverter/charger > and a pile of wal-mart car batteries. It's not pretty but I have had no > power drops in a couple of years. Since the unit is designed for RVs etc, it > will keep the 12v pile charged even in the face of 12v drain, so you can > drive both 120vac and 12vdc loads off the same setup. It will charge the > batteries when they need it and ac is available, and float them after they > are charged, and use the batteries to provide ac if the mains ac disappears. > You decide how big a pile of batteries to attach... > > On Tue, Sep 20, 2011 at 12:59 PM, Patrick D. Nix, Jr > <[email protected]> wrote: > > Whatever works best for reasonable $ :-) it's been a nightmare so far. > Starting to upset customers. > > Sent from my iPhone > > > On Sep 20, 2011, at 11:55 AM, "Chris Hudson" <[email protected]> wrote: > > Is this just while using the Jack? Via POE, 24V is the way to go.. IMO. > > > > Do you want to make a full conversion to DC? Or just replace the typical UPS > setup? > > > > Chris > > > > > > From: [email protected] [mailto:[email protected]] On > Behalf Of Justin Wilson > Sent: Tuesday, September 20, 2011 11:52 AM > To: WISPA General List > Subject: Re: [WISPA] Power for tower sites > > > > Careful on powering most Mikrotiks with 24 volt. We have found, > and verified with roc-noc and some others, that many of the MT boards will > get hot with 24 volts to the DC jack and lockup and other weirdness. > > > > Justin > > > > -- > > Justin Wilson <[email protected]> > Aol & Yahoo IM: j2sw > http://www.mtin.net/blog – xISP News > http://www.twitter.com/j2sw – Follow me on Twitter > > > > From: "Patrick D. Nix, Jr" <[email protected]> > Reply-To: WISPA General List <[email protected]> > Date: Tue, 20 Sep 2011 11:45:49 -0500 > To: WISPA General List <[email protected]> > Subject: [WISPA] Power for tower sites > > > > Currently we are having some horrible issues with power at our tower sites. > Our current configuration is that we have tripplite smart 500VA rackmout UPS > connected to deep cycle marine battery. This seems to work OK for a month or > so and then kills either the battery or the UPS or both. We then notice that > the equipment at the tower will power off (battery shuts down for about 10 > min) and then powers back on. This happens almost daily and in some cases > multiple times in a day. I think it may have to do with the output volts of > the battery not being high enough for the UPS to operate. We are desperately > looking for other alternatives to what we are doing to resolve this issue. > Most equipment will operate at 12/24 volt. 1x Mikrotik, 2x Trango AP, 2x > Trango Link45, 4x UBNT Rocket. Any suggestions are appreciated. > > > > Pat > > Csweb.net > > -------------------------------------------------------------------------------- > WISPA Wants You! 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