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Re: Miguel gets a new toy

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  • jljonsn9663
    May I be the first to say: WOOT! (and not just because I m getting your old one) Let me know when you need help setting up. Jeff
    Message 1 of 17 , Sep 10, 2009
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      May I be the first to say: WOOT! (and not just because I'm getting your old one)

      Let me know when you need help setting up.

      Jeff

      --- In medievalsawdust@yahoogroups.com, "Mike King" <the_spanishpeacock@...> wrote:
      >
      > Powermatic 3520B on its way. Stoked....seriously stoked!
      >
      > Miguel
      >
      >
      > <http://geo.yahoo.com/serv?s=97359714/grpId=6200723/grpspId=1705126283/msgId
      > =11873/stime=1252617125/nc1=3848614/nc2=5807836/nc3=5191954>
      >
    • Bruce S. R. Lee
      A lot depends on the brand/model of battery and the company doing the re-pack (or you can DIY with some batteries) Makita batteries are a PITA as they are a
      Message 2 of 17 , Sep 11, 2009
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        A lot depends on the brand/model of battery and the company doing the
        re-pack (or you can DIY with some batteries)

        Makita batteries are a PITA as they are a sealed unit - the repackers
        cut the outer case open with a 'hot knife', rebuild the pack & then
        -try- to weld the outer back together, with a variable amount of
        success - a friend has a few 9.6v Makitas that were rebuilt and at
        least one has fallen apart at the weld. Other brands such as the
        discontinued Triton cordless have the battery pack held together with
        screws, so it is very easy to DIY repack. It varies by brand & model.
        I also have a suspicion that some less common replacement batteries
        for older models are nearly dead due to self-discharge when you get them.

        A good repacked battery can out last & outperform the OEM battery if
        they use quality matched cells , specially so with 'bargain' brands
        which just use any old cells they can get cheap - on the other hand I
        have a Festo 9.6v drill that is around 15 years old and still holds a
        charge for a year or so on its original battery pack.

        One 'trick' that can revive an old battery is to put it in the
        freezer over night then let it thaw out before recharging. I'm
        guessing that this caused the crystals that form in the battery
        matrix to break down again into smaller bits, restoring the ability
        to hold a charge.

        regards
        Brusi of Orkney
        Rowany/Lochac
        Sydney/Australia.

        At 04:58 AM 11/09/2009, you wrote:


        >Anyone have it done?
        >
        >Happy with the results?
        >
        >Happy with the cost vs. buying new batteries?
        >
        >Baron Conal O'hAirt / Jim Hart
        >
        >Aude Aliquid Dignum
        >' Dare Something Worthy '
      • Bill McNutt
        Hum. My grandmother s old deep freezer is practically empty out in the garage. From: medievalsawdust@yahoogroups.com
        Message 3 of 17 , Sep 11, 2009
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          Hum.  My grandmother’s old “deep freezer” is practically empty out in the garage.

           

          From: medievalsawdust@yahoogroups.com [mailto:medievalsawdust@yahoogroups.com] On Behalf Of Bruce S. R. Lee
          Sent: Friday, September 11, 2009 4:08 AM
          To: medievalsawdust@yahoogroups.com
          Subject: Re: [MedievalSawdust] OOP: rebuilding cordless tool batteries?

           

           

          A lot depends on the brand/model of battery and the company doing the
          re-pack (or you can DIY with some batteries)

          Makita batteries are a PITA as they are a sealed unit - the repackers
          cut the outer case open with a 'hot knife', rebuild the pack & then
          -try- to weld the outer back together, with a variable amount of
          success - a friend has a few 9.6v Makitas that were rebuilt and at
          least one has fallen apart at the weld. Other brands such as the
          discontinued Triton cordless have the battery pack held together with
          screws, so it is very easy to DIY repack. It varies by brand & model.
          I also have a suspicion that some less common replacement batteries
          for older models are nearly dead due to self-discharge when you get them.

          A good repacked battery can out last & outperform the OEM battery if
          they use quality matched cells , specially so with 'bargain' brands
          which just use any old cells they can get cheap - on the other hand I
          have a Festo 9.6v drill that is around 15 years old and still holds a
          charge for a year or so on its original battery pack.

          One 'trick' that can revive an old battery is to put it in the
          freezer over night then let it thaw out before recharging. I'm
          guessing that this caused the crystals that form in the battery
          matrix to break down again into smaller bits, restoring the ability
          to hold a charge.

          regards
          Brusi of Orkney
          Rowany/Lochac
          Sydney/Australia.

          At 04:58 AM 11/09/2009, you wrote:

          >Anyone have it done?
          >
          >Happy with the results?
          >
          >Happy with the cost vs. buying new batteries?
          >
          >Baron Conal O'hAirt / Jim Hart
          >
          >Aude Aliquid Dignum
          >' Dare Something Worthy '

        • Conal O'hAirt Jim Hart
          One trick that can revive an old battery is to put it in the freezer over night then let it thaw out before recharging. I m guessing that this caused the
          Message 4 of 17 , Sep 11, 2009
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            One 'trick' that can revive an old battery is to put it in the
            freezer over night then let it thaw out before recharging. I'm
            guessing that this caused the crystals that form in the battery
            matrix to break down again into smaller bits, restoring the ability
            to hold a charge.

            hmmm.... It this is true it would be nice.....
            Almost sounds too easy to be true.

            Where did you hear this? I've seen a lot of
            similar things claimed to be fact when they
            are just urban legends or old wife's tales.

            Anyone know if it is at least feasible?
            ( I might try it anyway.... )
             
            Baron Conal O'hAirt / Jim Hart

            Aude Aliquid Dignum
            ' Dare Something Worthy '


            __

          • Bill McNutt
            Well, I was building a bridge one very HOT pennsic, and the battery packs were discharging very quickly. I always try to have a spare charged, but we were
            Message 5 of 17 , Sep 11, 2009
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              Well, I was building a bridge one very HOT pennsic, and the battery packs were discharging very quickly.  I always try to have a spare charged, but we were going through them too fast.  So I started storing them in the cooler.  Chilling them when they started to heat up helped them keep their charge longer.

               

              Not sure that’s relevant.

               

              On the other hand, if you already have a near-dead battery pack, it’s cheap enough to try it.

               

              Will

               

              From: medievalsawdust@yahoogroups.com [mailto:medievalsawdust@yahoogroups.com] On Behalf Of Conal O'hAirt Jim Hart
              Sent: Friday, September 11, 2009 11:01 AM
              To: medievalsawdust@yahoogroups.com
              Subject: Re: [MedievalSawdust] OOP: rebuilding cordless tool batteries?

               

               


              One 'trick' that can revive an old battery is to put it in the
              freezer over night then let it thaw out before recharging. I'm
              guessing that this caused the crystals that form in the battery
              matrix to break down again into smaller bits, restoring the ability
              to hold a charge.

              hmmm.... It this is true it would be nice.....
              Almost sounds too easy to be true.

              Where did you hear this? I've seen a lot of
              similar things claimed to be fact when they
              are just urban legends or old wife's tales.

              Anyone know if it is at least feasible?
              ( I might try it anyway.... )

               

              Baron Conal O'hAirt / Jim Hart

              Aude Aliquid Dignum
              ' Dare Something Worthy '

               

               

              __

               

            • James Winkler
              NiMH and NiCd batteries self discharge at a MUCH faster rate than alkaline batteries. In fact, at room temperature (about 70 degrees F) NiMH and NiCD
              Message 6 of 17 , Sep 11, 2009
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                NiMH and NiCd batteries self discharge at a MUCH faster rate than alkaline batteries.  In fact, at "room temperature" (about 70 degrees F) NiMH and NiCD batteries will self discharge a few percent PER DAY.  Storing them at lower temperatures will slow their self discharge rate dramatically.  NiMH batteries stored at freezing will retain over 90% of their charge for  full month. So it might make sense to store them in a freezer.  If you do, it's best to bring them back to room temperature before using them.
                 
                http://www.greenbatteries.com/batterymyths.html#Freezer
                 
                other than that... every source I found about freezing batteries to 'revive' them seems to indicate that it's a myth...
                 
                Chas.
                 
                 
              • mary_ostler
                I work in R&D at a Li-ion battery company. Cold storage slows the rate voltage discharge, and keeps the start impedance of batteries. It will not magically add
                Message 7 of 17 , Sep 11, 2009
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                  I work in R&D at a Li-ion battery company. Cold storage slows the rate voltage discharge, and keeps the start impedance of batteries. It will not magically add voltage out of thin air. Yes, there are ways of making electricity through tempature change (stirling engines..etc). It just doesn't work that way with batteries (Li-ion)

                  Mary O
                • Conal O'hAirt Jim Hart
                  Cool, a battery specialist! this is a handy list. just to be sure... I think the original suggestion was to freeze the battery to revive the battery sability
                  Message 8 of 17 , Sep 11, 2009
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                    Cool, a battery specialist! this is a handy list.

                    just to be sure...

                    I think the original suggestion was to freeze the battery to
                    revive the battery's ability to retain a charge not to charge
                    the battery itself.


                    But I still bet that it is a myth.
                     
                    Baron Conal O'hAirt / Jim Hart

                    Aude Aliquid Dignum
                    ' Dare Something Worthy '



                    From: mary_ostler <42vince@...>
                    To: medievalsawdust@yahoogroups.com
                    Sent: Friday, September 11, 2009 11:31:58 AM
                    Subject: [MedievalSawdust] Re: OOP: rebuilding cordless tool batteries?

                     


                    I work in R&D at a Li-ion battery company. Cold storage slows the rate voltage discharge, and keeps the start impedance of batteries. It will not magically add voltage out of thin air. Yes, there are ways of making electricity through tempature change (stirling engines..etc) . It just doesn't work that way with batteries (Li-ion)

                    Mary O


                  • leaking pen
                    I do this with recharchables all the time, and it works, especially on nicd. however, i take it straight from the freezer to the charger. i have a friend
                    Message 9 of 17 , Sep 11, 2009
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                      I do this with recharchables all the time, and it works, especially on
                      nicd. however, i take it straight from the freezer to the charger. i
                      have a friend that goes through a LOT of aa's, and he actually has his
                      recharger itself in the freezer.

                      On Fri, Sep 11, 2009 at 8:01 AM, Conal O'hAirt Jim
                      Hart<baronconal@...> wrote:
                      >
                      >
                      > One 'trick' that can revive an old battery is to put it in the
                      > freezer over night then let it thaw out before recharging. I'm
                      > guessing that this caused the crystals that form in the battery
                      > matrix to break down again into smaller bits, restoring the ability
                      > to hold a charge.
                      >
                      > hmmm.... It this is true it would be nice.....
                      > Almost sounds too easy to be true.
                      >
                      > Where did you hear this? I've seen a lot of
                      > similar things claimed to be fact when they
                      > are just urban legends or old wife's tales.
                      >
                      > Anyone know if it is at least feasible?
                      > ( I might try it anyway.... )
                      >
                      > Baron Conal O'hAirt / Jim Hart
                      >
                      > Aude Aliquid Dignum
                      > ' Dare Something Worthy '
                      >
                      > __
                      >
                    • powell.sean@comcast.net
                      I have friends who race remote control cars on a competitive level. One makes it a point of storing his high performance batteries in a freezer chest. When
                      Message 10 of 17 , Sep 11, 2009
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                        I have friends who race remote control cars on a competitive level. One makes it a point of storing his high performance batteries in a freezer chest. When cold they have lower internal resistance so he can get more voltage out of them. but not necessarily more amperage. This might be what you are experiencing.

                         

                        On a theoretical level you can freeze a battery cold enough that the chemical reaction dosn't take place... but thats more of an issue with wet batteries then dry.

                         

                        I don't know much else other then when my batteries died they replacements cost more then a new drill so I used the opportunity to upgrade from 12v to 18v.

                         

                        Sean

                        ----- Original Message -----
                        From: "Bill McNutt" <mcnutt@...>
                        To: medievalsawdust@yahoogroups.com
                        Sent: Friday, September 11, 2009 11:12:33 AM GMT -05:00 US/Canada Eastern
                        Subject: RE: [MedievalSawdust] OOP: rebuilding cordless tool batteries?



                        Well, I was building a bridge one very HOT pennsic, and the battery packs were discharging very quickly.  I always try to have a spare charged, but we were going through them too fast.  So I started storing them in the cooler.  Chilling them when they started to heat up helped them keep their charge longer.

                         

                        Not sure that’s relevant.

                         

                        On the other hand, if you already have a near-dead battery pack, it’s cheap enough to try it.

                         

                        Will

                      • Barbara Dodge
                        Woo HOOO! Another one joins the Mustard Monster Club! Enjoy, Barbara ... From: Mike King To: medievalsawdust@yahoogroups.com Sent: Thursday, September 10, 2009
                        Message 11 of 17 , Sep 12, 2009
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                          Woo HOOO! 
                          Another one joins the Mustard Monster Club!
                           
                          Enjoy,
                          Barbara
                          ----- Original Message -----
                          From: Mike King
                          Sent: Thursday, September 10, 2009 5:27 PM
                          Subject: [MedievalSawdust] Miguel gets a new toy

                           

                            Powermatic 3520B on its way.  Stoked....seriously stoked!
                           
                          Miguel


                        • n7bsn
                          ... Enjoy....While I like the PM, I m happy with my Nova, at least until I save up the money for a Robust (played with one at the National AAW and have been in
                          Message 12 of 17 , Sep 25, 2009
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                            > ----- Original Message -----
                            > From: Mike King
                            > To: medievalsawdust@yahoogroups.com
                            > Sent: Thursday, September 10, 2009 5:27 PM
                            > Subject: [MedievalSawdust] Miguel gets a new toy
                            >
                            >
                            >
                            > Powermatic 3520B on its way. Stoked....seriously stoked!
                            >
                            >
                            Enjoy....While I like the PM, I'm happy with my Nova, at least until I save up the money for a Robust (played with one at the National AAW and have been in lust ever since, but at ~$8K, they way I want it, I'm not going to have one tomorrow)

                            Ralg
                            AnTir
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