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  1. #1
    Reputation:'s Avatar
    Join Date
    Nov 2013

    Cheap light blink circuit eats batts or thinks it does ? WTF


    cheap light I wrote about earlier
    United PA light XC40, dual beam.


    in blink mode, it will run maybe 30 minutes then stop
    and refuse to relight.

    in solid mode it will run 2+ hours just fine

    I use 4x18650 3400mah 2s2p pack, and the first time I noticed
    this the batts were all down to 2.80 volts. so I reckon yep, of course.
    I had those batts sitting in the light for some weeks and parasitic drain did it.

    But I happened again, after fresh charge, and I yanked them and they are all 4 volts !

    the blink cycle is not a flash, it is a quick on-off-pause-on-off not quite
    a rapid flash.

    what is in the blink circuit design that makes the light think it is kaput when it really isn't ? or is that just how cheap circuits roll and it is a toss of the dice ?

    summary: United PA light = garbage ! (I will still use it for snow rides tho)

  2. #2
    RAKC Industries
    Join Date
    Jan 2017
    That's the same as the nitenumen that was written about a couple years ago.

    Your just played the lottery and got the consolation prize lol. Better than losing all together

    Sent from my SM-G950U using Tapatalk
    Life on a bike doesn't begin till the sun goes down.

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