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    Pac-Man (Level 10) gbpxl's Avatar
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    Default Rechargeable 2032 coin batteries? WTF?

    Apparently the Dreamcast clock fix requires a "rechargeable" 2032 batt rather than a regular one? What does that even mean? Why wouldnt a standard one work? What makes the rechargeable one a rechargeable one anyways? This is all news to me

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    Great Puma (Level 12) jb143's Avatar
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    They're different battery chemistries to make them rechargeable. Lithium-ion as opposed to just lithium. The rechargeable lir2032's are also a higher voltage. Also, you shouldn't try to charge a regular lithium cell, which the Dreamcast probably tries to do... though I'd hope it has some kind of protection circuitry. I never looked into it.

    I recall years ago that someone put AA lithiums in their Wii remotes, and it ended up burning down their house or something like that when it had its buttons held down,I think, in the couch cushions. Moral of the story... don't use the wrong battery type.

    Edit--
    I checked the story. The Wii remote exploded damaging stuff in their house with shrapnel... but didn't catch anything on fire. Still though, it was from not using the correct battery type.
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    Pac-Man (Level 10) gbpxl's Avatar
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    thanks. console5.com is sold out of what I need so Ill have to look elsewhere. i assume its just that it needs a higher voltage then.

    i put 2032s in my VMUs and had no issues so it must just be the console that needs rechargeable

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    The Sega CD used rechargeable batteries too from what I remember, I'm not sure how easy it would be to replace. I haven't used my system in years and am now wondering how it's holding up.

    From what I remember the battery would only be charged when the system was actually powered on, not just plugged in.

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    If you haven't turned on a Sega CD in years, your files are probably all gone and the memory may need formatting as well. I find my files disappear after maybe 6 months of no use. It's similar with my PC Engine Duo.

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    It's been many years since I've had my Sega CD hooked up, possibly over 10 years at this point or close to it. I'm just hoping that the battery itself is still good and can be charged when it's turned on. I don't really mind losing the saves themselves as I can start over. It would have been nice if it would charge when just plugged in but you actually have to use the console regularly for it to charge.

    With the PC Engine Duo or Turbo Duo it doesn't use a battery for saves, it uses a capacitor, so there's less to go wrong with it compared to a battery. At least assuming the capacitor is still good and not faulty. I don't believe this is a surface mounted capacitor as best as I can recall but they still need to be powered occasionally so they won't go bad. I guess that's something else I'll eventually need to check.

    I really need more time to play my games again.

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    I had similar issues with the rechargeable NiCd batteries on the 4 slot MVS boards. Thankfully they did not explode or leak and the boards were spotless.

    Managed to switch them to some weird NiMh same spec batteries and they work, though installing them was weird.

    There was a hack to use a regular CR2032 but it involved removing a resistor to stop the charging process. I didn't want to risk it so I just placed the recommended replacement.

    I presume the Dreamcast should be similar...removing something to stop it from charging and using a normal CR2032. Check online to see.

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