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Lets talk about LITHIUM Travel Trailer Batteries/Inverters/Solar (v2.0)

Discussion in 'Off-Topic Discussion' started by Danimal86, Jul 12, 2022.

  1. Jul 18, 2022 at 7:47 PM
    #31
    Danimal86

    Danimal86 [OP] What's a Dickfir?

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    The panels got delayed by a few days and finally have all the pieces of the puzzle, minus a couple of breakers (i aparently ordered a 300amp instead of a 200 that i thought i did). I still need some 2/0 welding wire i guess also

    I sweated my ass off and setup the panels in a series-parallel configuration on top of the patio cover.
    PXL_20220719_022633763.jpg

    Then i setup the 40a mppt controller and battery
    PXL_20220719_022548320.jpg

    with the setting sun, i was getting about 36v and about 2-3 amps. I'll be interested to see how it does tomorrow in the blasting sun
     
    Wallygator, Occidentalis and eick like this.
  2. Jul 19, 2022 at 2:55 PM
    #32
    Danimal86

    Danimal86 [OP] What's a Dickfir?

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    I got the bluetooth module delivered and set it up.
    Screenshot_20220719-142424.jpg
    Pretty sunny out and pulling about 325w from the panels.

    The default renogy "Li" setting has it set to charge to 13.6v, i was expecting to charge to 14.4-14.6v. Anyone know whats up? I emailed AmpereTime and asked them what they recommend.
     
  3. Jul 19, 2022 at 3:02 PM
    #33
    eick

    eick New Member

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    Lithium charging is different than charging a lead acid. They get a constant current first then a constant voltage then they get the float voltage.

    but hopefully they provide an answer for you on your specific case
     
  4. Jul 19, 2022 at 3:07 PM
    #34
    Danimal86

    Danimal86 [OP] What's a Dickfir?

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    I did read about CC then CV charging. Pretty interesting stuff.
    I'll let ya know what AmpereTime says.

    I was able to get some 3/0 cable at home depot, i was originally going to get 2/0 but 3/0 was only slightly more and shouldn't have any problem handling the 200a max that it could draw.
    Gonna be interesting to try to finagle this cable in place.
     
  5. Jul 19, 2022 at 3:11 PM
    #35
    eick

    eick New Member

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    Just think of it like copper pipe with some pvc on the outside of it lol. That’s what it’s gonna feel like trying to route it around
     
  6. Jul 19, 2022 at 3:34 PM
    #36
    Danimal86

    Danimal86 [OP] What's a Dickfir?

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    I started to research wire benders to see if that would help. For the most part, the 90deg up into the trailer is going to be the most dificult, but other than that it shouldn't be too bad. I know there's a couple guys in the energy field or linemen...maybe they have some tricks

    I'm going to ping @ColoradoTJ and see if he knows any tricks for bending 3/0 into submission :cool:
     
    ColoradoTJ likes this.
  7. Jul 19, 2022 at 3:55 PM
    #37
    Occidentalis

    Occidentalis Out Snakin'

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  8. Jul 19, 2022 at 4:14 PM
    #38
    ColoradoTJ

    ColoradoTJ I drink…and I know things. Staff Member

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    A metric buttload
    Gonna have to beat it into submission. Installing in the correct direction helps too.
     
    eick likes this.
  9. Jul 19, 2022 at 5:25 PM
    #39
    GODZILLA

    GODZILLA ASCM#1 Douchebag formerly known as 50 Buck

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    :rofl:
     
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  10. Jul 19, 2022 at 6:12 PM
    #40
    eick

    eick New Member

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    You’ll have to beat the shit of the crimper at least. Unless you have one of those fancy hydraulic ones
     
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  11. Jul 19, 2022 at 6:30 PM
    #41
    ColoradoTJ

    ColoradoTJ I drink…and I know things. Staff Member

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    A metric buttload
    No seriously. It has a direction to bend.
     
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  12. Jul 19, 2022 at 6:43 PM
    #42
    GODZILLA

    GODZILLA ASCM#1 Douchebag formerly known as 50 Buck

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    I was laughing at beating it into submission, though, I didn't know it had a direction to bend.
     
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  13. Jul 19, 2022 at 6:50 PM
    #43
    ColoradoTJ

    ColoradoTJ I drink…and I know things. Staff Member

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    A metric buttload
    Sometimes that’s the only thing that works. :rofl:
     
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  14. Jul 19, 2022 at 6:57 PM
    #44
    Danimal86

    Danimal86 [OP] What's a Dickfir?

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    Ever used some of the bending tools? I see some claw style ones and some that are two posts on a plate.
     
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  15. Jul 19, 2022 at 7:22 PM
    #45
    ColoradoTJ

    ColoradoTJ I drink…and I know things. Staff Member

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    A metric buttload
    You can use those or conduit benders.

    Lineman are way to proud to use those tools. Muscle everything and pay for it later is their way of doing it. Lmao.
     
    Danimal86 [OP] likes this.
  16. Aug 5, 2022 at 6:32 AM
    #46
    Danimal86

    Danimal86 [OP] What's a Dickfir?

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    I finally have some time to go over to the trailer today and work on the new battery setup, so last night i started to mount everything to the board that will be mounted inside the storage compartment with all the goodies.

    Since this will be vertical with the battery box next to it, i had to rig everything up so that i could pre-bend the 3/0 cable. It wasn't as bad as i thought it would have been.
    PXL_20220804_231046764.jpg
     
  17. Aug 12, 2022 at 4:11 PM
    #47
    Danimal86

    Danimal86 [OP] What's a Dickfir?

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    So our big dry camping trip is comming up a week from today. I finally got back out to the trailer to finish up the installation.

    Since last picture, i've added a Renogy battery shunt monitor that i will later mount inside.
    PXL_20220812_193659222.jpg

    I have it setup so that i can plug the trailers power cable into the "high current" ports on the inverter that are rated at 2kw.
    I tested everything out and it can run the nespresso (that fucking thing will pull 1600w per the shunt).
    If this doesn't work, i'm going to run the nespresso machine over with the truck about 50 times.
     
    eick likes this.
  18. Aug 12, 2022 at 4:17 PM
    #48
    eick

    eick New Member

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    Looks good!
     
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