Rechargeable Lithium (coin cell) Battery Life for GBA Flash Carts

Discussion in 'GBA - Flashing Hardware and Software' started by oldskoolnesgamer, Mar 11, 2008.

  1. oldskoolnesgamer

    oldskoolnesgamer Member

    Mar 10, 2008
    United States
    Related to my other post where I ranted about the annoyance of having a flaky flash cart battery that loses the saves on the cart all the time, here is my new thread.

    Doesn't seem like this GBA forum gets too much traffic, but I'll start up the thread anyway and see how it goes. The idea is to post:
    1) What flash cart(s) you have
    2) How long you've had it/them
    3) Whether the internal battery is dead/flaky
    4) If dead/flaky, then how long it took

    Posts merged

    Here's mine:

    1) EZ-Flash EZ-Cart I 512Mb
    2) Seems like about 3 yrs
    3) Dead
    4) About a year of sporadic playing

    1) Ez-Flash EZ-Cart II PowerStar 256Mb
    2) 2 years or so
    3) Dead
    4) About a year and a half
  2. Psyfira

    Psyfira Credit: 0ml. Insert tea to continue

    Dec 31, 2003
    Not sure what this will achieve but I'll play ball: EZFA 256Mb, 4 years and it's still working.
  3. wabo

    wabo GBAtemp Maniac

    Dec 14, 2003
    Bought a F2a 256 in 2003. Battery still works just fine. Although the F2A battery isn't rechargeable..
  4. bluesceada

    bluesceada Member

    Mar 10, 2008
    Gambia, The
    Maybe you could make a modification to the cartridges. Use a rechargeable battery. But it would need to be something with a very small self-discharge. Maybe Li-Ion, or maybe one of the newer Ni-MH like the sanyo eneloops....

    Then you could wire it somehow at voltage from the gameboy with a big resistor, so it charges just slightly to be kept alive...

    To make it more reliable you could maybe add a little circuit and a normal battery, so that one gets used if the rechargeable gets empty...... if there is place for this inside the cartridge.

    Or just use a cartridge that saves the savegame on flash memory.