is it possible to buy a better DSi battery?

Discussion in 'NDS - Flashcarts and Accessories' started by saggio, Aug 10, 2009.

  1. saggio
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    saggio Member

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    if so, link me, because we all know that the one it comes with sucks
     


  2. kobykaan

    kobykaan GBAtemp Addict

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    Deal Extreme sell compatible DSi batteries [​IMG]
     
  3. DeltaBurnt

    DeltaBurnt I'm bored

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    Yes most sites sell 3rd party batteries but ussually the reviews say that they're only half as good as the official one.
     
  4. Cashoo

    Cashoo Member

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    Is more MAH mean longer run time?
    So would this be better since it has 1800MAH Link
    Also can different battery break a DSi?
     
  5. kampang

    kampang Member

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  6. Da-Bomb1

    Da-Bomb1 GBAtemp Advanced Fan

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    They usually don't...they say they hold that much, but they really don't. They tend to last half as long, according to some of the reviews on DX.
     
  7. Cashoo

    Cashoo Member

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  8. Sanderino

    Sanderino I guess you only know what you got 'till it's gone

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    That's why I don't buy a DSi, because of the low battery life. Because i mostly play on my DS if I'm in a car making a long trip. If there is a good battery wich gives it twice the battery power I will think about buying it.
     
  9. DeltaBurnt

    DeltaBurnt I'm bored

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    The DSi's battery is actually pretty good as long as the brightness is atleast 3 or lower.
     
  10. Law

    Law rip ninjacat that zarcon made me

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    Gee, I wonder why.
     
  11. Da-Bomb1

    Da-Bomb1 GBAtemp Advanced Fan

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    Haha, still, I wouldn't trust 3rd party ones from anywhere...it seems as though they're basically all ripoffs, especially if they claim to have like, twice the battery life in the same package.
     
  12. FlatFrogger

    FlatFrogger GBAtemp Regular

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    If they are anything like the ds lite ones they are all horrible and offer WORSE battery life than your stock one.

    I can't see them suddenly being great for the dsi. If you live in the USA i think you can buy official batteries from nintendo themselves.
     
  13. Cashoo

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    Ok well I test this battery LUPO DSi battery and the the one that comes with the DSi.

    I tested both batteries on full brightness on the menu screen of 'New Super Mario Bros.'

    Standard DSi battery
    Time lasted: 3 hours 45 minutes
    [​IMG]

    LUPO battery:
    Time lasted: 35 minutes
    [​IMG]
    It might of been a faulty battery but it probably wasn't.
     
  14. Burnedmagix

    Burnedmagix GBAtemp Regular

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    Wow. that sucked D:
    Did you charge the rechargable battery for 10 hours before you used it?
     
  15. SkyintheSea

    SkyintheSea GBAtemp Regular

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    lmao 35 mins. damn that really sucks.
     
  16. CannonFoddr

    CannonFoddr Regular GBATemp Lurker

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    And if you turn off the WiFi if you're not using it can also extend the battery life
     
  17. FAST6191

    FAST6191 Techromancer

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    Basic (rechargeable) battery lessons:

    Batteries create electricity by reacting chemicals together, on the one hand you have basic batteries which work on exactly the same principles as a galvanic cell:
    http://chemistry.about.com/library/weekly/aa082003a.htm

    Rechargeable batteries work on the same principle but instead of a one way reaction you use a reversible one (often a reaction with multiple stages with the intermediate stages being reversible). Applying electricity of sufficient voltage the other way reverses the reaction, naturally the chemistry is complex and fairly expensive (and possibly dangerous). Cheap makers almost invariably skimp on this and this is why people do not suggest cheap rechargeable batteries and alas with such a rep no good makers really venture into the market of proprietary batteries as few buy third party batteries at or around the price of official ones. Trouble is the voltage and size is an odd one and conversion is not exactly efficient.

    Second to this is the problems associated with chemistry like self discharge and deep discharge (which can also be related).
    Batteries produce electricity by oxidising things and most oxides are not know for their low resistance (as these oxides are internal to the battery such a phenomenon is known as internal resistance and is important in the next paragraph) so even without things connected to the terminals charge can be lost. Long story short some things fully oxidise and can no long be used for a reaction (lower storage) and deposition (blocking other particles from reacting; also lower storage and potentially higher resistance)*.
    Deep discharge is not much of a problem on the DS as Voltage is related to apparent concentrations within a cell and this Voltage drops as the battery discharges for the reasons above and is more likely to become too low before deep discharge becomes a problem (this is also how the DS and over devices "know" the battery is getting low). Before someone mentions memory effect: http://www.dansdata.com/gz011.htm

    Internal resistance: now internal resistance means devices connected to a battery can only draw a limited amount of current (one reason why you may have to stick several batteries in a device) and a workaround for this is to stick several batteries in parallel as it will then cause the batteries to each provide a far lower current from each of them but ultimately a sufficient amount to power the device. While this is usually used for high power devices it is also useful for long term powering of devices (indeed I made one for an original DS).

    Amp Hours is a measurement of how long a given battery can sustain a given current, it is used when you have a set Voltage (which you do here) as it makes the maths simpler than using power and/or energy equations. 1200mAh means if the battery is working properly a current on one milliamp can be sustained for 1200 hours (note 1mA is a tiny current), a draw of 2 millamps means 600 hours 3mA is 400 hours......


    *You can reverse this in many ways including high current such a charged capacitor (remember discharge is exponential) or a suppy capable of delivering a large current (like a welder although a desk supply: http://web2.murraystate.edu/andy.batts/ps/powersupply.htm can work for these smaller devices) or instead you can use high frequency pulse to perform a similar feat (note that your battery chemistry and the problems faced may not be all that receptive to this). Note these techniques may not be the safest of things to do.

    More reading is you feel like it, it covers more things in depth and is probably worth reading from a design perspective:
    http://www.powerstream.com/BatteryFAQ.html
     
  18. awssk8er

    awssk8er GBAtemp Advanced Maniac

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    Turn your brightness down. I keep mine on 2, and I can see it perfectly, and it lasts like 4-5 times longer.
     
  19. Cashoo

    Cashoo Member

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    Yep
     
  20. kampang

    kampang Member

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    I set the brightness to 2 and it only lasted 7 hours 30 minutes (I wrote down all play durations):

    15 minutes.
    10 minutes.
    4 hour 30 minutes
    7 minutes
    2 hour 30 minutes


    Then the battery blinking red ... so I fully recharged it.

    I played Pokemon Platinum and Cake Mania if that has some influence on battery life.
    And I dont use Wi-Fi, it is turned off.

    Now, I set to the lowest brightness (1) and will report later.

    This is brand new DSi, I bought it last week.

    Lowest brightness is quite dark, but it is ok for certain game like Pokemon Platinum.
    I prefer brightness=2 btw.