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Solar Charge Controller: add Load Output?

Discussion in 'General Electronics Discussion' started by kanuck, Jun 3, 2013.

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  1. kanuck

    kanuck

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    Jun 3, 2013
    Greetings All!

    I recently picked up a Coleman 7-amp Charge Controller as part of a kit (with 40W solar panel). At first glance, it appears to offer only Panel:IN and Battery:OUT connectors, but since I've a similar controller that also offers a controlled Load:OUT (auto shuts off when battery drops below a specified voltage), its lopsided layout got me curious. Sure enough, when I popped it open I found an unused Load connector!

    It looks ready to go to me, but I'm no electronics wiz. Can you tell whether setting up a similarly controlled Load:OUT is really as easy as soldering on connectors at the marked L+ and L- spots?
    Front:
    [​IMG]
    Back:
    [​IMG]

    Thanks in advance!
     

    Attached Files:

    Last edited: Jun 3, 2013
  2. CDRIVE

    CDRIVE Hauling 10' pipe on a Trek Shift3

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    Do you have a schematic?

    Chris
     
  3. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Surprisingly, the answer may be YES.

    It appears the transistor used to switch the load has been populated on the board.

    Perhaps it is more expensive to produce a board without it?
     
  4. CDRIVE

    CDRIVE Hauling 10' pipe on a Trek Shift3

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    Steve, what's the component marked "F"? One leg is connected to "L-".

    Chris
     
  5. davenn

    davenn Moderator

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    a fuse would be the obvious choice ;)

    Dave
     
  6. CDRIVE

    CDRIVE Hauling 10' pipe on a Trek Shift3

    4,960
    652
    May 8, 2012
  7. davenn

    davenn Moderator

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    Sep 5, 2009
  8. CDRIVE

    CDRIVE Hauling 10' pipe on a Trek Shift3

    4,960
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    May 8, 2012
    That would indicate that the fuse isn't currently used. That's very odd.

    Chris
     
  9. kanuck

    kanuck

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    Jun 3, 2013
    Thanks Gentlemen!

    Here's hoping you're right. Guess I'll make the connections and give it a shot, try testing the system for a low charge disconnect. Will post the results.

    Good question about the F piece. I'll check it for markings when I pull it apart again.

    Thanks again...
     
  10. kanuck

    kanuck

    3
    0
    Jun 3, 2013
    It's been forever... just wanted to post that I connected a Load: OUT feed and it worked as predicted. BONUS!

    Thanks for all the help!
     
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