I think the yellow top optimas are for deep cycle apps. Check their website.
Va2ir Sent on the TELUS Mobility network with BlackBerry -----Original Message----- From: "tahrens301" <[email protected]> Date: Sat, 30 Jan 2010 14:11:05 To: <[email protected]> Subject: [Repeater-Builder] Re: Battery system for portable repeater (non solar) Are the optima type batteries meant for extended deep discharges? Tim --- In [email protected], "KD8BIW" <sdenn...@...> wrote: > > Something such as an Optima Yellow top battery would be okay in this use. > They are sealed, spillproof AGM batteries. Keep them at their "float" > voltage and you should not have a problem. Use these for battery back-up at > numerous repeaters and have not had a problem (yet...). Good luck and let us > know what you come up with, and how it works for you! > > Steve > > --- In [email protected], Tim Ahrens <tahrens@> wrote: > > > > Hi Eric/all, > > > > It is on a totally different frequency, and licensed as a mobile - > > within a 24km radius around the center of our district. > > > > All the fire repeaters in the county have the same output & > > input frequencies, just have different input PLs. Kind of a > > pain to go to direct with some older radios... e.g. X9000 > > which when you push the 'dir' button, it uses the TX PL. > > > > Laryn - these were some pretty high dollar units, so I > > wouldn't have expected them to fry the batteries. > > > > I'll look into the AGM bats - the rptr draws about 450 > > mA in RX, and about 4A in TX. > > > > Getting a Pelican case for the repeater & cables, but > > not sure how to make the battery transportable.. I > > suppose if it's 'really' sealed, then I wouldn't have to > > worry about leakage of the electrolyte - could use > > a case for it & the charger. > > > > Any recommendations about appropriate & 'sure-fire' > > chargers for one of these? I could put together something > > for float charging, but there will also be a need for 'real' > > charging as well. > > > > Thanks again, > > > > Tim > > >
