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Thread: Battery charger not charging

  1. 10th January 2020, 07:03 PM #1
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    Battery charger not charging

    I thought - about Aug 2017- to spoil myself with an Aussie made $325 battery charger.
    Now it has an odd fault, well, fairly major as it wont charge...
    It hooks up, goes thru the diagnostics- and even detects a dud battery or cell, it then goes into charge mode and about a minute later says battery if charged, but it isn't.
    The retailer- a dedicated battery shop- kindly offered another charger at cost, but stopped short of having mine looked at by the manufacturer- who is in Sydney anyway..
    So I'm thinking the indicated gizmo might be a fuse? There is no dedicated separate fuse for this unit & I'm wondering if this black tube might be an inbuilt one?
    20200110_105054.jpg
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  2. 10th January 2020, 07:19 PM #2
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    Hi DeeJay, did you try it on anther battery to see if it did the same thing?

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  3. 10th January 2020, 07:20 PM #3
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    Quote Originally Posted by DeeJay View Post
    ... There is no dedicated separate fuse for this unit & I'm wondering if this black tube might be an inbuilt one?
    Electrolytic capacitor would be my guess.
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  4. 10th January 2020, 07:23 PM #4
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    It doesn't look like an electrolytic. What is the writing on it? It looks like it connects directly to the 240VAC active wire (brown).

    What is that disconnected yellow wire?
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  5. 10th January 2020, 08:01 PM #5
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    Quote Originally Posted by drivesafe View Post
    Hi DeeJay, did you try it on anther battery to see if it did the same thing?
    I ran a battery down to 12.4 Volt, said it was charged, retailer tried a couple of batteries, same result. Tried even using different power points too..
    I think it may have been my fault as I fitted an Anderson plug instead of clips & charge the Landie direct & probably disconnected without turning the charger off first. Back to clips now but no change.
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  6. 10th January 2020, 08:16 PM #6
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    black thing looks like a wire wound resistor .
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  7. 10th January 2020, 08:24 PM #7
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    Quote Originally Posted by p38arover View Post
    It doesn't look like an electrolytic. What is the writing on it? It looks like it connects directly to the 240VAC active wire (brown).

    What is that disconnected yellow wire?
    I cannot find where that belongs. no reason for it being adrift as unit was never dropped.
    The black tube had 125Deg Written on it so I guessed it was shrink tube. I cut it open & yes, its a fuse. The bad news is its OK, so back to square 1.
    Attached more pics, but I'm stumped for now. Nothing appears burnt out either.
    20200110_211627.jpg20200110_211711.jpg
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  8. 11th January 2020, 08:41 AM #8
    PhilipA
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    It must have Voltage sensitive relays in it , one of which has died.

    I had this happen on a bloody expensive NOCO which failed when charging my wife's golf buggy lithium battery.

    Boy did I get abused when she had to push that buggy form hole 9 on.
    I reverted to the supplied charger after wrapping it in heat sinks and paste and it is still going strong.

    Regards PhilipA
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  9. 16th January 2020, 08:39 AM #9
    Wahgilad
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    faulty charger

    Glass fuses have a habit of coroding at the two terminal connections.
    It may be that at low current conditions it works, but fails under high current.
    either wire in an identical fuse across this one, or apply a hot soldering iron to the fuse ends.
    Power disconnected of course.
    Cheers
    Don
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