Barry, That same battery would probably run your system for weeks if it were 12 or 24 volts and hooked directly to the appropriate battery backup point on a repeater. Lot of inefficiency when you have to chop up battery and convert it to 120 volts AC. Just the nature of the beast. Sometimes size matters, I would not let that size battery in my tower building but I have some marine batteries located there now.
Paul -----Original Message----- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Barry C' Sent: Thursday, May 24, 2007 10:03 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: UPS I am surprised no one has suggested the simple answer with a ups , find one that does the job and fit a huge external battery , I have a 2kw unit here with storage which will run for days (140 kg of cells), used ups and used traction batteries Locally I can buy an 750 watt ups for under $100.00 from china and a used traction battery ( fork lift) is the cost of removal and the lead .Its very possible seeing traction batteries like mine are single cells to build whats required , maybe the local phone company can help with single cells ?. >From: "Gary Schafer" <[EMAIL PROTECTED]> >Reply-To: Repeater-Builder@yahoogroups.com >To: <Repeater-Builder@yahoogroups.com> >Subject: RE: [Repeater-Builder] Re: UPS >Date: Thu, 24 May 2007 20:30:08 -0500 > >The problem is. Using a battery on a power supply is that unless you run >the >power supply output at around 13.3 to 13.6 volts you are not properly >"floating the battery. 13.8 volts is too high for most batteries and it >will >eventually cook the battery. > > > >The other problem is, even at 13.8 volts, that is not high enough to >properly recharge the battery after it has been discharged. It will never >get back the proper charge at those voltages. To properly charge the charge >voltage needs to be run up to around 14.3 volts. > > > >A 3 stage charger is required to do the job. Yes a couple of tenths of a >volt does make a big difference in battery maintenance. > > > >73 > >Gary K4FMX > > > > _____ > >From: Repeater-Builder@yahoogroups.com >[mailto:[EMAIL PROTECTED] On Behalf Of Don KA9QJG >Sent: Thursday, May 24, 2007 12:25 PM >To: Repeater-Builder@yahoogroups.com >Subject: RE: [Repeater-Builder] Re: UPS > > > > ><http://geo.yahoo.com/serv?s=97359714/grpId=104168/grpspId=1705063108/msgId = >72211/stime=1180018089/nc1=3848542/nc2=4025377/nc3=4609192> > >Tom I use a ASTRON RM 60M-BB (Battery Back Up} and a Optima Battery on My >440 Micor it switches Immediately when You get a Power Failure . You >still use the same device that is used on the Micor for the 9.6, which in >my >case is a Little Regulator Board I do have a Panel mount Bird Wattmeter, >and >I do notice on Battery power the Wattage drops about 8 Watts. This is >probably Normal with the Difference from 13.8 to 12 Volts no one will >notice >anyway. So the answer is Unless You are using something else other then >the >13.8 Supply Voltage then a Reg for the 9.6 You don't need to change >Anything. > > > >PS As Much as I like Motorola the Old Motorola Micor Power Supply as you >know is Very Very Heavy and Parts were getting Harder to Find. Never had a >Problem with any Astron > > > >Happy Repeater Building > > > >Don KA9QJG > > > _________________________________________________________________ Advertisement: Missy Higgins new album On A Clear Night – stream full tracks now! http://ninemsn.com.au/share/redir/adTrack.asp?mode=click&clientID=781&referr al=hotmailtaglineMay&URL=http://music.ninemsn.com.au/playlist.aspx?sectionid =2465§ionname=artistfeature&subsectionid=9150&subsectionname=missyhiggin s&categoryid=2577 Yahoo! Groups Links No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.467 / Virus Database: 269.7.7/816 - Release Date: 5/23/2007 3:59 PM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.467 / Virus Database: 269.7.7/816 - Release Date: 5/23/2007 3:59 PM Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
