Are there tablet batteries difer. from 3.7V ?

Discussion in 'General Electronics Chat' started by UnnamedUser159, May 31, 2016.

  1. UnnamedUser159

    Thread Starter Member

    May 3, 2016
    130
    0
    Simple and clear.

    Have here one piece and it wont turn on too.

    Have took from one man only usb board and the battery is charging. Put the charger off before minutes but the tablet still wont power on.

    thanks.
     
  2. dl324

    Distinguished Member

    Mar 30, 2015
    3,250
    626
    Yes. Different amp-hour capacities. Voltage will vary depending on state of charge.

    Battery voltage may be too low for the tablet to turn on.

    Measure the battery voltage under load.
     
  3. UnnamedUser159

    Thread Starter Member

    May 3, 2016
    130
    0
    now i put to charge the battery again and the meter is showing increasing.

    I begin to think that if there are 2 things to go wrong, by my side every time minimum 4 are going to hell and never can have success :(
     
  4. eetech00

    Active Member

    Jun 8, 2013
    650
    112
    What type of tablet is it?
     
  5. UnnamedUser159

    Thread Starter Member

    May 3, 2016
    130
    0
    Vonino
    sirius QS internet tablet
    ;
     
  6. UnnamedUser159

    Thread Starter Member

    May 3, 2016
    130
    0
    3.693 and nothing. Maybe something with Power Key and its ribbon cable is wrong. Maybe lcd or digitizer connection...

    I have break a little the ribbon cable of card reader but now the cable and the board of card reader are desoldered...have buyd new one but still dont installed them
     
  7. UnnamedUser159

    Thread Starter Member

    May 3, 2016
    130
    0
    Which is the next higher than 3.7V? /if the question is not silly/
     
  8. UnnamedUser159

    Thread Starter Member

    May 3, 2016
    130
    0
    So so

    it`s me again.

    Now measure the voltage and it`s 3.897.

    Yesterday put the device on charge at 10:30(local time and every times above will be too)

    At 12:30 4,16

    When i left 17:40 4.15V

    What can be the reason? Maybe this can help everything to goes in right direction(although my usual negativism)

    Thanks and have a nice beer :)
     
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