Announcement

Collapse
No announcement yet.

Advice on these batteries found in salvage yard

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Advice on these batteries found in salvage yard

    Hey all -

    Wondering if anyone has some sage wisdom on these batteries I found in my local salvage yard. They're brand new, thinking they might be a good battery for my solar water pump. (Grundfos SQ flex series pump # SQF-3)

    Its $100/pc, should I do it?

    Thanks!
    GS_battery.jpg

  • #2
    Telecom batteries = design for 6 years of float service and then 12 hours of discharge. Then you toss and buy new replacements.

    These are not designed for daily cycle use, they are emergency backup use.

    If they are new, how in the heck did they get into a salvage yard?
    Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister

    Comment


    • #3
      They were design for 6 years of float ? and then 12hours hours of discharge? Not sure what that means.

      I bought one, used a trickle charger to fill it and it seems fine. What would happen if I use it as a daily cycle battery?

      They ended up there, because it costs more to dispose of them properly than give them away for free. (CA) Salvage yard is non-profit, so it's also a tax break.

      Comment


      • #4
        Telcom batteries are only designed for rare discharge emergency use like once a year or less, not daily discharge cycles. They are very dependable for sitting on a trickle charger for many years and then working that rare time they are called into use. They do poorly at providing daily charge/discharge cycles like most solar users want and don't last long under those conditions. We would all be buying them if they were a great deal for solar storage. They aren't.
        Dave W. Gilbert AZ
        6.63kW grid-tie owner

        Comment


        • #5
          Originally posted by society View Post
          I bought one, used a trickle charger to fill it and it seems fine. What would happen if I use it as a daily cycle battery?

          They ended up there, because it costs more to dispose of them properly than give them away for free. (CA) Salvage yard is non-profit, so it's also a tax break.
          So in about a year those batteries are going to be your problem to dispose of.

          I work in telecom, and we take a liability like outdated battery, and either sell them for a little cash for or give them away. You sign a receipt that keeps the Employment Prevention Agency off our backs by making disposal your problem.

          MSEE, PE

          Comment


          • #6
            Originally posted by Sunking View Post
            So in about a year those batteries are going to be your problem to dispose of.

            I work in telecom, and we take a liability like outdated battery, and either sell them for a little cash for or give them away. You sign a receipt that keeps the Employment Prevention Agency off our backs by making disposal your problem.
            What would it take for the average Joe to dispose of these batteries? It's got to be harder than either a free battery swap or a few dollars at a recycling center like the normal car batteries I'm used to.

            Comment


            • #7
              If you only have a couple, or are buying new ones, you can use the dud batteries as the Core Deposit for the new ones.
              Sometimes you can get $5 each at the scrap yard for a couple, but if you have a truckload of them, you may have to pay hazmat fees to dispose of them.
              Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
              || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
              || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

              solar: http://tinyurl.com/LMR-Solar
              gen: http://tinyurl.com/LMR-Lister

              Comment


              • #8
                Originally posted by Mike90250 View Post
                If you only have a couple, or are buying new ones, you can use the dud batteries as the Core Deposit for the new ones.
                Sometimes you can get $5 each at the scrap yard for a couple, but if you have a truckload of them, you may have to pay hazmat fees to dispose of them.
                I guess at what point do these batteries become a HAZMAT issue requiring special disposal?

                Let's say I'm so impressed with my 4 battery 12 Volt RV system after its built, that I plan on taking the big Leap and going off grid with a much bigger 48 Volt system so I can power a 4000 watt inverter so I can run a small Fridge, My washer, TV, and Desktop Computer. I'll use natural gas where I can such as heating and refrigeration, not use air conditioning, etc. Let's say this system has 20 batteries, or even 40 batteries. Is it now an issue?

                I got a couple steps I'm looking at after this RV solar is finished. First is to make the RV 24 volts to power a bigger inverter, and that will have its challenges, mostly because a lot of the wired DC power such as brakes and lights are already 12 Volts. How I'd love to take the lessons learned from both of these projects and turn it into a weekend cabin or small house that is off grid. If this is going to become a project where I'm dealing with things like HAZMAT battery disposal 10 years down the road, best to find out earlier rather than later.

                Comment


                • #9
                  no problem as long as you use the batteries for the recycle/core offset when you buy new ones. But if you have more than a couple, the recycle folks will often charge you to take them.
                  Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
                  || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
                  || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

                  solar: http://tinyurl.com/LMR-Solar
                  gen: http://tinyurl.com/LMR-Lister

                  Comment

                  Working...
                  X