Recharging an SP battery without a Cable

Discussion in 'GBA - Hardware, Devices and Utilities' started by timishu, Feb 3, 2012.

  1. timishu
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    timishu GBAtemp Regular

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    Hey guys, I'm about to do mod my Gameboy Color with a frontlight, but in addition, I'm going to be placing the battery housing with a Gameboy Advance SP's battery. After I've got the battery installed, I was wondering if there was a way to charge the battery without removing it from the Gameboy Color. I'm not sure if there's a way to have the SP's charging input inside the Color as well as the battery, but if anyone knows of a solution for this, I'd appreciate the help.
     
  2. Foxi4

    Foxi4 On the hunt...

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    1. Drill hole in the side.
    2. Install standard miniUSB slot.
    3. Connect the + and - to the battery pins.
    4. Charge with standard USB chargers (same voltage as far as I remember, but do check beforehand)
    5. Battery charges ---> Battery discharges into the GBC

    Just remember to connect it correctly - you don't want to sum up voltages!
     
  3. thaddius

    thaddius Charmander is not pleased.

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    Is the charging circuit in the battery? Or part of the SPs motherboard? If he does what you say and the charging circuit isn't in the right place the battery could explode.
     
  4. Foxi4

    Foxi4 On the hunt...

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    The charging circuit is inside the SP, lol. Of course you can overload your battery (it shouldn't explode though unless he REALLY overloads it). If you want to do it right then you need to solder up a charging circuit that will shut off when the battery's full. There are instructables online. I just thought he meant a "quick charge".
     
  5. thaddius

    thaddius Charmander is not pleased.

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    Way back when I modded a GBC to have a frontlight and an overclocking switch, I thought about adding an SP battery. Sadly I couldn't find any documentation on SP batteries and charging circuits. The only thing I saw was someone who had rigged their GBC to accept an SP battery, but would remove it and charge it in an SP.

    It's possible I didn't scour enough.
     
  6. Foxi4

    Foxi4 On the hunt...

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    It'd need an average Li-Ion cell charging circuit board, really. Nothing fancy, circuit schematics float all around the web for those and the board itself would be small enough to fit the battery compartment.

    If you're lazy, you can actually recycle a Li-Ion battery charger for a board instead of making one.

    [​IMG]
    Should be sufficient.