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charging internal battery in led light

Discussion in 'Power Electronics' started by EricWalker, Jun 3, 2013.

  1. EricWalker

    EricWalker

    6
    2
    Dec 5, 2012
    I have specialty lighting that works cordless- 12vdc - The battery in the light is charged via 120v with transformer to 12vdc. I am trying to diagnose what went bad on the board because now the light will only work when plugged in..I tested the internal battery and that is holding a charge. The light will not turn on using the battery. Nothing in the circuitry looks burnt out and the fuse is ok..
     
  2. davenn

    davenn Moderator

    13,290
    1,756
    Sep 5, 2009
    hi there :)

    how did you measure the battery .... with or without load ?


    show us some sharp well lit pics of the circuit

    Dave
     
  3. EricWalker

    EricWalker

    6
    2
    Dec 5, 2012
    LED Light battery

    Hello,

    I test with and without load - measuring the same.

    I do not have schematics or detailed instructions - brought them through wholesaler - made in china..
     

    Attached Files:

  4. CDRIVE

    CDRIVE Hauling 10' pipe on a Trek Shift3

    4,960
    648
    May 8, 2012
    Not that it's related but one of your photos appears to have a microphone in the upper right corner of the PCB. Does this lighting system employ a a sound activated mode?

    Chris
     
  5. EricWalker

    EricWalker

    6
    2
    Dec 5, 2012
    led lights

    Yes it does..
     
  6. CDRIVE

    CDRIVE Hauling 10' pipe on a Trek Shift3

    4,960
    648
    May 8, 2012
    Where in those photos does the battery and the mains tie in?

    Chris
     
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