Connect with us

Battery charger low output

Discussion in 'Power Electronics' started by abunaitwo, Apr 26, 2020.

Scroll to continue with content
  1. abunaitwo

    abunaitwo

    9
    0
    Dec 4, 2014
  2. Bluejets

    Bluejets

    3,990
    824
    Oct 5, 2014
    Wire diagram is of little assistance.
    Circuit diagram is a different thing. Chances of getting one fairly slim I would imagine.
    If weather affected, look for signs of weather damage.e.g. bad connections, damage to any printed circuit board.
    Meter out switches to see if working as they should.
    Parts list shows both switches the same however, this appears to be an error as one should be DPDT the other DPTT.
     
  3. abunaitwo

    abunaitwo

    9
    0
    Dec 4, 2014
    Thanks
    I cleaned two of the switches.
    6v/12v and 2a/12a/75a switch.
    Both were corroded.
    To clean the other switch, I would have to unsolder it from the board.
    I also tested the diodes and the breaker.
    Both seem to be good.
    Sealed breaker, so can't open it up. But it does have continuity.
    I'd like to test the transformer before going any further.
    It does hum.
     
  4. Bluejets

    Bluejets

    3,990
    824
    Oct 5, 2014
    I doubt the tranny is defective, I'd go more to the switches and push on connectors.
    Cleaning might have improved the situation but perhaps not completely.
    Only a voltage test on load would determine that.
    Just be aware that is mains voltage present on both switches.

    EDIT: other switch on the pcb appears to be low voltage and may just be the problem.
     
  5. DJL33B

    DJL33B

    9
    3
    Aug 22, 2019
    If I can remember this correctly, some of the older chargers used a pulse output, and monitored the battery voltage to control the gate circuit of the SCR. You may need a partially discharged battery to test the operation of the charger.
     
  6. abunaitwo

    abunaitwo

    9
    0
    Dec 4, 2014
    I tried it on a dead battery, and nothing.
    The meter I have is a craftsman digital.
    I had it in the sun all day. Got hot.
    That should dry out everything on it.
     
  7. Bluejets

    Bluejets

    3,990
    824
    Oct 5, 2014
    Really depends on what you refer to as a dead battery.
    Don't know of any charger that will work on a completely dead battery or even one below recovery specs.
     
  8. Harald Kapp

    Harald Kapp Moderator Moderator

    9,887
    2,096
    Nov 17, 2011
    As the manual of the charger states:
     
  9. abunaitwo

    abunaitwo

    9
    0
    Dec 4, 2014
    Battery I tried it on had 10v, so don't know if it would charge or not.
    I did put in on a good battery, and it didn't do anything.
    No noise, meter didn't move.
    I'll fool with it a little more.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Similar Threads
There are no similar threads yet.
Loading...
Electronics Point Logo
Continue to site
Quote of the day

-