Replacing the battery?

Discussion in 'EZ-Flash' started by Mettaur3SP, Apr 22, 2016.

  1. Mettaur3SP
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    Mettaur3SP Member

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    I'm considering getting an EZ flash IV, and I've heard the battery runs out eventually. So, two questions:
    A. Would it become rechargeable if I replaced the cr2020 with a vl2020 or whatever they used when It was rechargeable?

    B. Can someone make a video on how to do such a thing? thanks!
     
  2. raulpica

    raulpica With your drill, thrust to the sky!

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    A. Just opened mine, it's a VL2020, which means it's already rechargeable. It just tends to die after X recharging cycles.

    B. Just desolder the old one and solder the new one on the same solder pads? :P
     
  3. FAST6191

    FAST6191 Techromancer

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    VL2020 was the original models and for a few years after.
    CR2020 was the later miniSD models.
    The new microSD models use a different sort being CR2025.

    The CR2020 stuff differs from the rechargeable ones but you could probably replace diodes and resistors as appropriate to get charging going on (no GBA flash cart I have ever seen has had proper charge management for SRAM batteries, the EZ line being no exception), most would just replace the battery again though as it lasts for years -- when carts had a real time clock to power it took effort, half modern SRAM just needing data to be held is not a demanding task. I would be half willing to bet that the internal resistance/general shelf life of batteries plays a role of fair significance in it over just being exhausted by the SRAM.
    Edit. Forgot to say if you only had a rechargeable in your kit or something then it would probably work just fine until it dies from deep discharge or something, said VL2020s are used by certain car key fobs though (some BMW if memory serves) so they are quite expensive as sellers realised people would happily pay to fix a key fob that the car companies would charge through the nose for to otherwise replace.
     
  4. Mettaur3SP
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    Mettaur3SP Member

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    Ok, also, where would I buy one? I've been looking around, and I don't really trust many of the sites i'm seeing.
     
  5. how_do_i_do_that

    how_do_i_do_that Blue Wizard is about to die.

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  6. TecXero

    TecXero Technovert

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    If you're that concerned about it, you can also patch most GBA games with different forms of softreset that would allow you to directly reboot back into the EZ4's menu, allowing it to save to the SD. It's not a big deal but might be a nice fallback if you're worried about your battery being low.
     
  7. Mettaur3SP
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    Mettaur3SP Member

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    by, "buy one" I meant an ez flash iv microsd
     
  8. Ninoh-FOX

    Ninoh-FOX Otaku Gamer!!

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    I changed the battery from my ezflash IV microsd for a recargable battery without problems.