EZ-Flash III battery

Discussion in 'GBA - Flashing Hardware and Software' started by Vacarack, Dec 29, 2016.

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  1. Vacarack
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    Vacarack Newbie

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    I have an EZ-Flash III 1Gb, and the battery died some time ago. I tried to replace it with a standard button battery but failed. In the process I lost the original battery. Can anyone tell me what the correct battery is for this flash cart?
     
    #1 Dec 29, 2016
  2. FAST6191

    FAST6191 Techromancer

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    Panasonic VL2020 is the one used by the EZ2, EZ3 and earlier EZ4 GBA size. You can still find them for not a lot today but you may have to search a bit as they also fix certain BMW key fobs and some sellers jacked the price up accordingly.
     
    x65943 likes this.
    #2 Dec 29, 2016
  3. Vacarack
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    Vacarack Newbie

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    Sweet. Thanks!
     
    #3 Dec 29, 2016
  4. Vacarack
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    Vacarack Newbie

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    I guess now, I just need to find one with the correct +/- leads.
     
    #4 Dec 30, 2016
  5. FAST6191

    FAST6191 Techromancer

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    Good luck finding one of those. I think the EZteam just bent a lead of one of the standard arrangements back rather than having fun with a tab welder. You can always throw a small wire on there as well, might not look pretty but will get the job done.
     
    #5 Dec 30, 2016
  6. Jayro

    Jayro MediCat USB and Mini Windows 10 Developer

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    I'd just solder in a new battery socket that's removable.
     
    #6 Dec 30, 2016
  7. FAST6191

    FAST6191 Techromancer

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    Space is at a bit of a premium in this instance. I guess you could drop down a size or two and use one of those instead, if you do then do make sure to use the same chemistry battery or one that is compatible, Panasonic have a spec sheet for the battery out there something. The EZ3 will not have proper charge regulation as much as a diode and a resistor or two but if it is one that needs fancy constant current phases, temp sensing and whatever then be aware.
     
    #7 Dec 30, 2016
  8. Vacarack
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    Vacarack Newbie

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    #8 Dec 31, 2016
  9. Vacarack
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    Vacarack Newbie

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    Well, I got the above battery, soldered it in place, and left the cart in the EZWriter II all night long (green light on). No joy. Not charging. I don't need EZ Manger running, do I?
     
    #9 Jan 6, 2017
  10. FAST6191

    FAST6191 Techromancer

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    No, any powered USB port should have done it.

    Do you have a multimeter to test the voltage? Most cells will come charged but you never know.

    After this we get to start looking at broken components or connections somewhere on the EZ3.
     
    #10 Jan 6, 2017
  11. Vacarack
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    Vacarack Newbie

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    Voltage out of the package was 2.96v. I figured it needs charging.
     
    #11 Jan 6, 2017
  12. slaphappygamer

    slaphappygamer GBAPerm

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    Hey there, did you ever get your new battery going? I'm looking to replace my battery for my ezflashiii also. I was going to get the same battery.
     
    #12 Apr 30, 2017
  13. koffieleut

    koffieleut GBAtemp Fan

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    Can you use this battery's with gen 2 Pokémon games? Because the battery's I've ordered are dead within 7 months.
     
    #13 May 9, 2017
  14. how_do_i_do_that

    how_do_i_do_that Blue Wizard is about to die.

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    You have insufficient posts to view user location.
    Gen 2 pokemon battery tends to have tabs that are 180 degrees apart. like the image below.

    Warning: Spoilers inside!

    If your applying heat from a soldering iron to a battery with no tabs, your destroying the battery by applying excessive heat which shortens the battery life by alot. You can find battery with tabs on amazon if you don't like buying through a not well know site to you.

    The battery visually shown above is from amazon.
    https://www.amazon.com/10-Pack-CR2025-Batteries-Soldering-Tabs/dp/B00GQCZF88/

    ---

    Just noticed your flag is listing Netherlands. Your going to need to find a vendor that sells something similar. Ebay tends to list these.
     
    Last edited by how_do_i_do_that, May 10, 2017
    #14 May 10, 2017
  15. koffieleut

    koffieleut GBAtemp Fan

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    Like I said, I bought some 2025 from ebay last year, but my gen 2 carts are allready dead.
    Maybe soldering a tab on top of the existing tab (pointing the opposite direction) could do it?
     
    #15 May 11, 2017
  16. how_do_i_do_that

    how_do_i_do_that Blue Wizard is about to die.

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    It might have been old stock, where the battery life would be shorter than the 3-5 years of a new battery. You don't need to extend the tabs if you can already reach the PCB contact tabs.
     
    #16 May 11, 2017
  17. Heinrisch

    Heinrisch GBAtemp Regular

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    I changed the battery in mine today and it seems to be working nicely!

    I went on ebay and bought the cheapest Panasonic VL2020 battery I could find. If you are interested I bought this one: https://www.ebay.com/itm/Panasonic-ml2020-vl2020-BMW-3-5-7-x5-z4-e83-fernsteuerung-stick-Batterie/163567530738.

    I took one of the leads from the dry battery and soldered it to the leads of this battery to get the pin correctly (don't know if this is recommended :)).

    Regarding this battery: https://www.amazon.com/gp/product/B01LY3L69F/
    @Vacarack, I think it needs to be inserted "up-side-down", that is text downwards, to get the leads correct (+ to + and - to -).
     
    alexander1970 likes this.
    #17 May 2, 2019
  18. Jayro

    Jayro MediCat USB and Mini Windows 10 Developer

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    I would have soldered in a coincell holder, so you don't have to solder in a new battery every time
     
    alexander1970 likes this.
    #18 May 3, 2019
  19. Heinrisch

    Heinrisch GBAtemp Regular

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    If you can find a holder that fits, please share! :)
     
    slaphappygamer and alexander1970 like this.
    #19 May 3, 2019
  20. slaphappygamer

    slaphappygamer GBAPerm

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    Oh! Maybe my battery is upside down!?! I have that battery in your amazon link. I never even thought about that. I mean, when is polarity labeled wrong??
     
    #20 May 3, 2019
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