3 pins of mobile battery

Discussion in 'General Electronics Chat' started by aamirali, Jul 21, 2014.

  1. aamirali

    Thread Starter Member

    Feb 2, 2012
    415
    1
    Two pins of mobile battery is +ve & -ve.

    Third I serached is for NTC.

    What how come NTC be put inside battery. Usually battery is dc source, any other electronics is placed outside battery. It caanot be placed inside battery.
     
  2. MrChips

    Moderator

    Oct 2, 2009
    12,440
    3,360
    NTC resistor is used to measure the temperature of the battery.
     
  3. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,980
    744
    Its for a Thermistor in side to prevent over charging, see charger circuit.
     
  4. shakilabanu

    Member

    Jul 8, 2014
    44
    2
    As Dodgydave has shared most mobile phone batteries not just have a thermistor inside them, but a small PCB too carrying an entire protection and over charge prevention circuit inside them...

    If it had only two terminals then in most cases that is just a Li Ion cell, which is similar to any other cell that you are comparing the battery with.
     
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