500 AH would be large. --- David <[EMAIL PROTECTED]> wrote: > > what do you consider large??? > I have 3 25ah gel cells > > ----- Original Message ----- > From: "Joe Montierth" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Friday, April 08, 2005 1:45 PM > Subject: Re: [Repeater-Builder] astron rs50 > > > > > > Yes, that will work just fine. Make sure you put > in > > fuses, and set the current limit down somewhat if > you > > are feeding a big battery bank. > > > > Joe > > > > > > --- David <[EMAIL PROTECTED]> wrote: > > > > > > 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. > > > >
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