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Thread: Help please

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  1. #1
    Charter Member
    us
    Scott

    Mar 2013
    huntington beach ca
    white's 5900 di pro, Fisher CZ20, Fisher 1280, Garrett Infinium LS, Teknetics T2 SE and Teknetics Omega 8000, Makro Multi Kruzer, Garrett Sea Hunter Mark II and Fisher CZ21
    118
    119 times
    All Types Of Treasure Hunting

    Help please

    Are there any Fisher CZ 21 users out there that can point me in the direction of some acceptable rechargeable 9 volt batteries?

  2. #2
    us
    Jan 2016
    NW Arcanslaw / SW Misery
    Minelab X-Terra 705 Gold / Garrett PropointerAT.
    1,956
    3440 times
    All Types Of Treasure Hunting
    There should be some local specialty battery stores that sell them, but it has been my experience that 9v batteries take quite a while to charge.
    “During the gold rush its a good time to be in the pick and shovel business.” Mark Twain

  3. #3
    Charter Member
    us
    Scott

    Mar 2013
    huntington beach ca
    white's 5900 di pro, Fisher CZ20, Fisher 1280, Garrett Infinium LS, Teknetics T2 SE and Teknetics Omega 8000, Makro Multi Kruzer, Garrett Sea Hunter Mark II and Fisher CZ21
    118
    119 times
    All Types Of Treasure Hunting
    Charging time is not an issue with me, it's the voltage supplied by the battery itself. Store bought alkaline batteries are 9 + volt, rechargeable 9 volt batteries for whatever reason tend to be around 8 volt output. I've heard of some guys taking batteries that have reached 8 volt or a little less and replacing them, so I don't want to buy a batch of rechargeable batteries that fully charged are the same voltage as the ones other guys are throwing in the garbage. But throwing away batteries after only three or four hunts seems like a waste, but I don't want to keep using them if I am losing depth because of a lack of voltage.

  4. #4
    us
    nomad roman numeral 2

    Nov 2009
    nomads land
    any tector i can get my hands on
    922
    508 times
    every time i stick my neck out and help a friend i get my head chopped off. ? life is a compromise. how about this. you buy some alkaline batt's off ebay and use them alternately while your rechargeables are charging. but them we have the voltage depth issue ? ah what do i know ?

  5. #5
    Charter Member
    us
    Scott

    Mar 2013
    huntington beach ca
    white's 5900 di pro, Fisher CZ20, Fisher 1280, Garrett Infinium LS, Teknetics T2 SE and Teknetics Omega 8000, Makro Multi Kruzer, Garrett Sea Hunter Mark II and Fisher CZ21
    118
    119 times
    All Types Of Treasure Hunting
    well I'm certainly not here to chop anybody's head off, and honestly I don't care if the batteries take 12 days to fully charge, I just want a rechargeable battery that will last more than a couple hours hunting. I just don't want to have to go through the trial-and-error phase of buying 12 different brands before I find the one that actually works. So far I have purchased the ebl 600 milliamp rechargeable 9 volt batteries and I don't think I got more than an hour and a half out of them before the detector started getting weird.

  6. #6

    Jan 2006
    217
    196 times
    Try these they worked well in the CZ-21. Batteryjunction.com. Tenergy rechargeable batteries.


    All The Best,
    Bill G
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    sws33 likes this.
    Every find is a good find, some are just Great........

  7. #7

    Apr 2018
    342
    26 times
    All Types Of Treasure Hunting
    Why not switch to lipo? Should be lighter but you would need to be sure to not discharge them too much. Just today I saw a 3d printable insert for the cz to house a lipo, I'll try to see if I can relocate it.

  8. #8
    us
    Jan 2007
    Cape Cod, Massachuestts
    Garrett (Infinium, ATPro, ATX), Minelab Excalibur, Troy (X2 X5), Tesoro Conquistador, Whites (Surfmaster PI, Quantum), JW Fisher 8X, DetectorPro Underwater 8", Minelab Equinox 800, Pro-Find 35
    407
    458 times
    Beach and Shallow Water Hunting
    Here is the reason why the differences in voltage. From:
    https://michaelbluejay.com/batteries/9v.html


    1. "9V" is the physical size/shape, not the actual voltage. An alkaline 9V is really 9 volts, but a rechargeable "9V" battery is initially 9.6V, 8.4V, 7.4V, or 7.2V, depending on the model in question. In the rest of this discussion, "9V" refers to the 9V size, not the actual voltage.
    2. Performance of various voltage 9V's.
      1. 9.6V (NiMH). It's rare, but will always provide good runtime and performance. Achieved by using eight 1.2V cells.
      2. 8.4V (NiMH). These will often be good too, but some power-hungry devices might do worse with 8.4V than with 9.6V. Achieved by using seven 1.2V cells.
      3. 7.4V (Lithium). Usually work well even with the lower voltage because lithiums have such a high capacity. Achieved by using two 3.7V cells.
      4. 7.2 (Lithum). Same as above, using two 3.6V cells. Li-Ion cells are generally 3.6V or 3.7V.
      5. 7.2V (NiMH). I'm skeptical would ever provide good performance, but I haven't tested them so I can't say for sure.


    I would take a look at the Maha Powerex (MHR9VP) for the Maha Powerex (MHR84VP).
    9 and 8.4VDC respectively.
    sws33 likes this.

  9. #9
    us
    D. Meeker

    Mar 2006
    Gulf Coast, Fl
    Blue Xcals and CTX
    1,908
    896 times
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    Honorable Mentions (3)
    IF the machine has a control voltage......then it is more about storage/recharging time....so Lith is hard to beat with a smartcharger. But with any machine that you have to replace or remove the battery for charging..... i think its important to open that box after every hunt just to check for water.
    Whatever you do in life, surround yourself with smart people who'll argue with you.... John Wooden.

  10. #10
    au
    Jul 2008
    TNQ
    307
    63 times
    Alternatively a 6 cell battery holder with 5 Li-ion cells and a dummy screw will do the job of powering the CZ 20/21.

    Click image for larger version. 

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    ivanll
    sws33 likes this.

 

 

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