stupid question. Normally, power supplies convert from AC to DC.
If you wire DC into an outlet, and plug an AC power supply into it, will it just cut down the DC to whatever that P/S is supposed to provide to the POE unit, and pass the rest ? i.e. Solar 48V -> 24V Batteries -> 24VDC -> Outlets w/"normal" AC P/Ss plugged into them outputting 5vdc to an AP or the like - will it work ? I imagine it will, albeit terribly inefficient... -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Hendry Sent: Saturday, November 25, 2006 7:32 AM To: 'WISPA General List' Subject: RE: [WISPA] External battery on UPS Looking for the most efficient use of the battery power and the kit to achieve it. Old APC's are easy enough to track down on ebay but normally only have standard AC outputs so I'm guessing you would connect both an APC and Ethernet direct to the batteries? -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mario Pommier Sent: 24 November 2006 19:04 To: WISPA General List Subject: Re: [WISPA] External battery on UPS Yes, Paul. What are you looking for? Mario Paul Hendry wrote: >Just out of interest, does anyone run batteries (via fuses) directly >into >cat5 instead of converting back to AC just to run standard 48v PoE up >the tower? > >-----Original Message----- >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On >Behalf Of Ron Wallace >Sent: 17 November 2006 21:19 >To: WISPA General List >Subject: Re: [WISPA] External battery on UPS > >Thanks Brian > > > >>-----Original Message----- >>From: Brian Rohrbacher [mailto:[EMAIL PROTECTED] >>Sent: Wednesday, November 15, 2006 09:41 PM >>To: 'WISPA General List' >>Subject: Re: [WISPA] External battery on UPS >> >>I'm pasting Gino's link to the right thread. >>Then I can search me email in a year and find the correct thread.... >> >>Connectors: >> >>http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=263-110 >> >>Batteries: >> >>http://www.donrowe.com/batteries/8a31dt.html >> >> >> >>Brian Rohrbacher wrote: >> >> >> >>>Can we get some links to these batteries that work well? >>>Gino, >>>Got a link to the DC block connectors you were talking about? >>> >>>Brian >>> >>> >>>Travis Johnson wrote: >>> >>> >>> >>>>Hi, >>>> >>>>We run two 4 gauge power wires out the front of the case, connect >>>>the positive to a 60A fuse, and then to the batteries. >>>> >>>>We are using AGM type (same thing used in UPS systems) big batteries >>>>(a little bigger than a car battery, but each battery is 110 pounds). >>>>We wire them in series (to get 24VDC). >>>> >>>>This setup has only been installed for 12-18 months at various >>>>locations, so I don't have an estimate on battery life. >>>> >>>>Travis >>>>Microserv >>>> >>>>Brian Rohrbacher wrote: >>>> >>>> >>>> >>>>>You got any pics of this or similar Travis....anyone? >>>>> >>>>>Travis, >>>>>What APC do you use and what batteries are added? What do you draw >>>>>and what is th run time? Do you know how many times the one with >>>>>the most cycles has been drawn down? How long do the batteries last? >>>>> >>>>>Brian >>>>> >>>>>Travis Johnson wrote: >>>>> >>>>> >>>>> >>>>>>You can't use just 1 battery. The APC units want to see 24vdc, so >>>>>>you need two batteries running in series. >>>>>> >>>>>>It works perfectly, as I have 20+ remote locations running off two >>>>>>gel type batteries. Make sure you install some type of a fuse on >>>>>>the positive side of the connection. >>>>>> >>>>>>Travis >>>>>>Microserv >>>>>> >>>>>>Mark Nash - Lists wrote: >>>>>> >>>>>> >>>>>> >>>>>>>I believe I remember some discussion on this list on connecting >>>>>>>an external battery to an APC UPS. I'm in the middle of doing it >>>>>>>right now and am having problems. The UPS just beep continuously >>>>>>>with the 'bad battery' light on. I'm using a Lifeline deep cycle >>>>>>>battery. Any ideas? >>>>>>> >>>>>>>Mark Nash >>>>>>>Network Engineer >>>>>>>UnwiredOnline.Net >>>>>>>350 Holly Street >>>>>>>Junction City, OR 97448 >>>>>>>http://www.uwol.net >>>>>>>541-998-5555 >>>>>>>541-998-5599 fax >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>-- >>WISPA Wireless List: wireless@wispa.org >> >>Subscribe/Unsubscribe: >>http://lists.wispa.org/mailman/listinfo/wireless >> >>Archives: http://lists.wispa.org/pipermail/wireless/ >> >> >> > > > -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.409 / Virus Database: 268.14.14/548 - Release Date: 23/11/2006 -- No virus found in this outgoing message. Checked by AVG Free Edition. 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