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Thread: Pet 2100dx

  1. #1
    Moderator DrewNJ's Avatar
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    Pet 2100dx

    Is the battery replaceable in the PET 2100DX tach?
    Thanks
    Doug


  2. #2
    cheatin' piston popper addicted's Avatar
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    don't know if it's replaceable, but the specs in the manual say that it has a 20,000 hour life. yes, twenty THOUSAND hours. That's more than 2 straight years 24/7.

  3. #3
    KamikazeGPR's Avatar
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    I've taken apart a trashed pet2100dx i have.The battery is replaceable, but will require alittle work. it is held in by 2 thin metal tabs that are pierced into the battery skin.

    The tabs are very thin and fragile, I used 2 needle nose pliers. 1 to hold battery,the other to hold tab from tearing and pulled them off.

    The only way i can see to hold the new battery in place is to hit it with a solder tack weld. Maybe tape, but i dont know how well it will hold up to vibration and moisture.

    If you'd like to see pics of it torn apart i can take some. i still have the pet here on the desk.

    The front cover is glued on to the case. the screws for the circuit board to the case are under the cover. I used a razor blade to get the cover off. Slid it under the cover to break the glue.

    Under the sticker on the back of the tach are 2 holes that expose the circuit board. It would be a good idea to seal over the sticker with silicone or crazy glue.
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  4. #4
    Moderator DrewNJ's Avatar
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    Sounds like what I attempted to do to an old tiny tach......I wasn't so lucky though....lol..
    Thanks
    Doug

  5. #5
    quadzilla's Avatar
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    Yes..

    Hey Drew..

    The pet manual/site say its a sealed for life unit..!!!!

    But the one on mine crapped out in less than a year..

    They're pretty simple to open up..
    Plus when it dead its for the bin anyway(yeah right..!!)

    The battery used is a common old CR2032 Lithium cell..

    The one you want to buy has solder tags attached to it...!!
    If i remember correctly the factory one is like 260ma/h..

    I used a 300ma/h in mine.. its a pretty simple job for someone who can solder..!!

    To open it up..
    Carefully take a scalpel type blade(craft knife etc) and go around the edges a couple of times..
    Then slide the blade under the plastic front face, no more than about 2mm,
    Then slowly push the blade around, You'll feel the front start to come away..

    Once you've went all around lift the face up, All the guts (workings) comes with it..
    Flip it over.. examine it and get in about it..

    NOTE OF CAUTION...
    DO NOT TRY TO SOLDER ONTO A LITHIUM BATTERY WITHOUT THE TAGS ATTACHED...!!!
    IT WILL EXPLODE IN YOUR FACE...!!!!

    Good luck if you decide to give it a bash Drew..

    Gerry

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