on the repeater builder website there is a mod for the astron rs35 where you go into it and cut a trace then add a resistor then adjust the power supply's output voltage to what the float charge rate of the battery I have done this to an rs35 and have not had any problems I am just wondering if it is okay to do it to the rs50
----- Original Message ----- From: "Dave VanHorn" <[EMAIL PROTECTED]> To: <[email protected]>; <[email protected]> Sent: Friday, April 08, 2005 1:26 PM Subject: Re: [Repeater-Builder] astron rs50 > > At 12:08 PM 4/8/2005, David wrote: > > >no you can buy it build it and hook up external to the rs50 it can be built > >into the rm50 > >but I don't have the rm 50 I have the rs50 and am wondering if I should > >spend the $45 for the battery backup kit or if the mod for the rs35 on the > >repeater builder website will be acceptable since I do plan on fusing both > >positive and negative lines from the rs50 to the batteries > >and again from the batteries to the load > > What does this mod do exactly? > > What we've done, and I've used this at home for years, is to set the > power supply to 14.4V, and connect the backup batteries directly in parallel. > Mechanically, the power supply leads (both of them!) run direct to > the battery, and in through a 30A fuse, then back out from the > battery through another 30A, to a distribution panel with fuses sized > for each device. Everything's powerpoled of course. > > I've run batteries this way for >8 years with no problems, the trick > is to adjust the float voltage for your particular battery. > SLA isn't the same as Gell, and so on. They are pretty close, and > slightly under is better than slightly over. > Reduced charge state as opposed to electrolyzing the water and loosing it. > > > > > > > > Yahoo! Groups Links > > > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> 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/

