6v lesuire battery powering LED lamp instead of 4x AA batteries**Newbie here**

Discussion in 'General Electronics Chat' started by SteveUKNewbie, Jan 4, 2018.

  1. SteveUKNewbie

    Thread Starter New Member

    Jan 4, 2018
    6
    0
    Hi all.
    I have just bought 4 x LED battery lights than each run off 4 x AA batteries (6v)
    I want to use them in a garage where I have no electric power supply as main lighting

    I was told after buying a 6v leisure battery that I could run them but after test wiring with two lights on the new battery I saw smoke slightly appearing.

    I think I know enough to know that just wiring direct to a battery may not be all I need.

    Any help with why and what I need please?

    Also please let me know if more info is rerquired

    Thanks in advance
    Steve
     
  2. spinnaker

    AAC Fanatic!

    Oct 29, 2009
    6,855
    3,009
    A schematic of how the 4 AAs were wired and a schematic of you new wiring configuration.

    What type of LEDs?

    And what on earth is a "leisure" battery?
     
  3. SteveUKNewbie

    Thread Starter New Member

    Jan 4, 2018
    6
    0
    Ahh ok. Let me get on that.
    A leisure battery over here is a smaller car battery that you can use for camping etc (or for leisure).
    I'll take some pics also
    Ta
     
  4. ElectricSpidey

    Member

    Dec 2, 2017
    444
    96
    Well if the manufacturer was relying on the internal resistance of the batteries to limit the current, then you need a resistor.

    But also you need to double check and be sure the lights weren’t wired as two batteries in series and then in parallel, yielding 3 volts not 6.

    And I assume the smoke was from the LEDs.
     
  5. SteveUKNewbie

    Thread Starter New Member

    Jan 4, 2018
    6
    0
    Ok so I have added a couple of pics and a description of lamp is below...
    Specification
    Materials: ABS
    Lumens: 100% - 500LM 30% - 150LM
    Weight: 305g
    LED: COB LED
    Colour Temperature: 6500-7000K
    Battery: 4 x AA batteries (included)
    Dimensions: Approx 15 x 15 x 4.5cm
    Dimmer Mode: 100% - 30% Brightness
    IP Rating: IPX4 - Protects from splashing water, no matter the direction
     
  6. SteveUKNewbie

    Thread Starter New Member

    Jan 4, 2018
    6
    0
    @ ElectricSpidey - Thanks. Good point.
    The batteries are basically 4 in a row end to end.
    Lamp +battery- +battery- +battery- +battery- lamp

    Does that makes sense?

    And yes I think a resistor is what I would need but I'm stuck already.
    The smoke was kind of coming from LEDs as if they were hot and had liquid on them. But they were not hot at all.

    Having just written that.. actually it looked exactly like solder smoke

    I can take readings from circuit tester
    :)
    Thanks for all looking into this
     
  7. spinnaker

    AAC Fanatic!

    Oct 29, 2009
    6,855
    3,009

    Those are LED spotlights. They usually do not require any resistors. Did they ever work with the 4AA? Do they still work with the 4 AAs?
     
  8. SteveUKNewbie

    Thread Starter New Member

    Jan 4, 2018
    6
    0
    Hi. Sorry spotlights/lamps. That's me be wrong.

    They do still work with 4 x AA batteries. They're not damaged luckily but would have been had I left them on hence my cry for help :)
     
  9. spinnaker

    AAC Fanatic!

    Oct 29, 2009
    6,855
    3,009

    What are the chip numbers on that board? They are must likely your current regulator and you won't need resistors.


    Are you certain you hooked up the garden tractor battery (what they are called here ;) ) with the right polarity?
     
  10. SteveUKNewbie

    Thread Starter New Member

    Jan 4, 2018
    6
    0
    lol The garden tractor battery? Like it :)
    I did have the polarity correct yes.
    The chip numbers are attached... Pic 4
     
  11. spinnaker

    AAC Fanatic!

    Oct 29, 2009
    6,855
    3,009
    Actually looked at the photo again. That is not a garden tractor battery. We would just call it an SLA Standard Lead Acid.

    What is the chip number on the big one?
     
  12. AnalogKid

    AAC Fanatic!

    Aug 1, 2013
    7,045
    1,994
    Sealed Lead Acid.

    Any markings on the 8-pin IC?

    M7 comes up as a 1 A, 1 kV Shottkey diode. Two in parallel makes sense, AND it makes it impossible to damage the unit if the battery power is reversed.

    Recheck the 1RD devices. Could they be 1R0?

    Recheck the 212 device. Could it be 272?

    What is on the bottom side of the board?

    Cute light - manufacturer's website on the package?

    ak
     
    Last edited: Jan 4, 2018
  13. #12

    Expert

    Nov 30, 2010
    18,078
    9,620
    The last two I bought were, "AGM" or absorbent glass mat...not that I can tell the difference without looking them up at...
    Hang on...batteryuniversity.com isn't responding.:eek:
    That's a resource I wouldn't want to lose.:(

    Looks like they are re-booting or something temporary.o_O
     
  14. spinnaker

    AAC Fanatic!

    Oct 29, 2009
    6,855
    3,009

    Sorry that is right Sealed
     
  15. Kjeldgaard

    Member

    Apr 7, 2016
    289
    109
    Some thoughts:

    10 watts from four pieces of AA batteries tell me that the battery voltage certainly is not over 5 volt, probably closer to 4.5 volts?

    10 watts on a 6 Volt 12 Ah lead battery will be close to the nominal 6 Volt.

    And since it's apparently a linear regulator (no inductions), so something must be too hot.
     
Loading...