Type of battery in M3 Lite?

Discussion in 'M3 Adapter' started by Vidikron, Oct 1, 2007.

  1. Vidikron
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    Vidikron Advanced Member

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    I've recently started saves with my M3 Lite and I suspect that the battery is going bad. I tried some searches, but can't find any info about the exact specs of battery in the M3 Lite. So I opened it up and the metal contacts are over the writing on the battery and I prefer to simply keep the battery in place until I have a new one on hand and I'm ready to make the switch. So does anyone here know what I need to buy?

    Thanks!
     
  2. 4saken

    4saken Retired Ace Attorney

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    Best thing is probably to take it out and let an electrician (at a store) look at it.
     
  3. scrub96691

    scrub96691 Newbie

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    Funny, I just wrote a new post of the same topic too... What is the current voltage of your battery? (Sorry for asking if you don't have a volt meter) Mine is currently 0.4V and it looks like it's too low, this seems to be causing my save games to corrupt.
     
  4. cory1492

    cory1492 GBAtemp Maniac

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    Should be around 3.3V if it is similar to M3 perfect SD. I'd give you more info if I could, but all I have here is the slim SD perfect and huge m3 perfect.
     
  5. scrub96691

    scrub96691 Newbie

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    I just did a quick operation on the M3 Lite. The battery is a Rechargeable Lithium 3.6V (12.5 mm diameter).

    If you plan to replace the battery, it MUST be rechargeable. Because when you turn on the NDS, it feeds the voltage from the main battery to little M3 one. In theory, the longer you have the NDS on, the rechargeable battery should store a longer charge... of course these batteries are from China... so they probably suck. The other thing is that these batteries are not easy to find. (Make sure you buy the ones that have the tab/connectors already welded on).
     
  6. NextStep

    NextStep GBAtemp Regular

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    holy... that's abit complicated for me... which flash carts don't need to change batteries?

    i might get one before my m3 lite dies out.
     
  7. g6team

    g6team GBAtemp Advanced Fan

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  8. cory1492

    cory1492 GBAtemp Maniac

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    No GBA capable ones that I know of will keep (gba) saves without a battery. Some of the newer DS slot cards don't use a battery at all (R4, cyclo, M3DS real), and cards like supercard have had no battery in them (DS games write directly to the SD cards, GBA games require some convoluted steps to save).
     
  9. NextStep

    NextStep GBAtemp Regular

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    perfect, that's exactly what i want to know

    thanks~ [​IMG]
     
  10. Agu Fungus

    Agu Fungus Advanced Member

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    After a little research, I found out that it does not necessarily have to be a LIR1220. It's hard to get it anyway, and besides, does it ever get recharged while playing? Instead, you can get a CR1220, and once replaced, it works better than before! Before the new battery, all the m3 did was keep the game save for a short period of time because of the battery's short life, which is not good for RTC games like Pokémon. Now with the new battery, it can even keep the game save within its memory for a long time! I once had a save of Crash Bandicoot and left the game save within its internal memory with the GBA turned off for the entire night. At the next day, it still had that save (don't forget to back up that save to the SD card)! In conclusion, if you get an M3 Lite (it also works with EZ Flash 3 in 1 expansion pack, as it uses the same type of battery), it is highly recommended to replace the battery if you can.

    Hope it was useful for eveybody.

    Edit: Remember, when replacing the battery, the plus side must be facing down. Here's the tutorial for EZ 3 in 1 which might also work with M3: http://gbatemp.net/index.php?showtopic=132872
     
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