• [pedalradio] SLA Battery Rejuvenation #chat

    From Kevin Crockett - VK3CKC@432:1/101 to pedalradio@groups.io on Sat Oct 19 07:23:32 2019
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    A new chat has been created:

    Hi All.

    Do any of you have any sick SLA batteries? I recently discovered that my t=
    wo 9AH SLAs had become more than a little sick after sitting around for a w= hile and were not appropriately responding to charging. They were also imme= diately dropping to 9-10V with only 150mA of discharge current. I recalled = that I had been going to try something that I had seen in a YouTube video q= uite a while back. This is how it all went:

    1: Carefully remove the top panel from the battery with a knife or screwdr= iver to reveal the rubber caps on the cells.
    2: Remove the rubber caps.
    3: Top up each cell with water. Yes, that's right, the video mentioned wat=
    er but I would use distilled water.
    4: Replace cell caps and top panel.
    5: Charge.

    I didn't have any distilled water left, so I used tap water after consider=
    ing I really had nothing to lose. The charging process took longer than it = had recently been taking. The immediate voltage drop no longer occurred and=
    now, all looks fine again. It seems that the main cause of this SLA "sickn= ess" is that they dry out.

    I do have another battery that I labelled as usable, plus some I was given=
    as no longer usable that I will also try to rejuvenate. Worth a try

    View/Join This Chat ( https://groups.io/g/pedalradio/chat/3645 )

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    <p>A new chat has been created:</p>

    <p>Hi All.<br /><br />Do any of you have any sick SLA batteries? I recentl=
    y discovered that my two 9AH SLAs had become more than a little sick after = sitting around for a while and were not appropriately responding to chargin=
    g. They were also immediately dropping to 9-10V with only 150mA of discharg=
    e current. I recalled that I had been going to try something that I had see=
    n in a YouTube video quite a while back. This is how it all went:<br /><br = />1: Carefully remove the top panel from the battery with a knife or screwd= river to reveal the rubber caps on the cells.<br />2: Remove the rubber cap= s.<br />3: Top up each cell with water. Yes, that's right, the video mentio= ned water but I would use distilled water.<br />4: Replace cell caps and to=
    p panel.<br />5: Charge.<br /><br />I didn't have any distilled water left,=
    so I used tap water after considering I really had nothing to lose. The ch= arging process took longer than it had recently been taking. The immediate = voltage drop no longer occurred and now, all looks fine again. It seems tha=
    t the main cause of this SLA "sickness" is that they dry out.<br /><br />I =
    do have another battery that I labelled as usable, plus some I was given as=
    no longer usable that I will also try to rejuvenate. Worth a try</p>

    <p><a href=3D"https://groups.io/g/pedalradio/chat/3645">View/Join This Cha= t</a></p>
    <br>-- <br><h5>Kevin Crockett<br />VK3CKC<br />Axedale, Victoria</h5>

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