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please help me in Power Issue *_*

Discussion in 'General Electronics Discussion' started by mot1639, Mar 6, 2011.

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  1. mot1639


    Mar 6, 2011
    hi all ...

    my problem is that i have small modem that come with 3.7 V battery, with 450 mah ... i change it to D battery with 3.6 V with 4000 mah ...

    the problem now the modem not working ,... yes the LED in circuit work but the modem can not work ....... when i replace it with old 3.7 battery it work ....

    how i can resolve this issue ... please help me out in this problem .....regards :( :( :( :( :(
  2. davenn

    davenn Moderator

    Sep 5, 2009
    hi, welcome to the forum,

    A "D" battery (cell) is normally 1.5V so you better clarify exactly what type of battery you replaced the original one with :)
    what is written on it as far as voltage and current ratings ?

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