Li-ion vs. Ni-MH battery

Discussion in 'General Electronics Chat' started by emilpdan, Oct 24, 2012.

  1. emilpdan

    Thread Starter New Member

    Oct 24, 2012
    2
    0
    Would i be able to replace a 1100mAh, 3.6V, Li-ion with a 900 mAh, BMC-3, 3.6V, Ni-MH battery in a Nokia 3310?

    Would there eg. be problems with charging with the "old" charger (for the Ni-MH)?
     
  2. timescope

    Member

    Dec 14, 2011
    298
    44
    This is not a good idea because the charging requirements of Li-ion and Ni-MH are different : Li-ion is constant voltage and Ni-MH is constant current.

    www.ti.com/lit/an/snva557/snva557.pdf

    Timescope
     
  3. Audioguru

    New Member

    Dec 20, 2007
    9,411
    896
    The charger circuit is inside the phone, not inside the "charger". The "charger" is simply a power supply for the charger circuit inside the phone.
     
  4. bountyhunter

    Well-Known Member

    Sep 7, 2009
    2,498
    507
    I've never seen a consumer product where you can swap in Li-Ion for Ni-MH. The charging hardware would have to be very complex and be able to "recognize" the battery type based on memory devices in the battery pack and then accomodate it by changing the charging algorithms.

    When I worked in the IC industry, some makers talked about maybe doing that but the cost was prohibitive. I've never seen a consumer product with such a charger built in.
     
  5. emilpdan

    Thread Starter New Member

    Oct 24, 2012
    2
    0
    Thanks for the great answers!!! appreciate it.
     
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