MPPT controller as battery monitor?

Discussion in 'Mech Tech' started by Zed, Jan 8, 2016.

  1. Zed

    Zed Gradually getting grumpier

    If I wire it up without a solar panel?
    @theBusmonkey knows the one I have. :)
     
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  2. should be able to but i would fit a switch so it isnt permanently on and adding to the drain
     
    zed likes this.
  3. Zed

    Zed Gradually getting grumpier

    15mA, is that worth worrying about?
     
  4. Probably not considering you are in a hookup fair bit at the moment. Best sort out a solar mount!!
     
  5. Zed

    Zed Gradually getting grumpier

    It and some wiring get installed - that's more stuff tidied up. I need a smaller panel, light and flexible for the weedy roof, I was looking earlier - 100w = 3.5kg. The roof seems quite delicately balanced and I haven't got around to plonking some weights on it, but 3.5kg isn't much.
     
  6. These are the ones I have:

    [​IMG]

    50watts each
     
  7. Zed

    Zed Gradually getting grumpier

    When you glue then on, remember they might go wrong and you'd want to get them off again. i.e. don't go mad IMO. Sikoflex sticks well enough i think. You try first. :D
     
  8. theBusmonkey

    theBusmonkey Sponsor

    Don't see why not either.
    You connect the controller first, before the panels, in a standard instal so it can't do it any harm to test.
    @pkrboo when are you going to pluck up the courage to get those things mounted:D
     
  9. Ermmmmm
     
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  10. Zed

    Zed Gradually getting grumpier

    I'm a ring terminal short of a full circuit.
    Is that like being a few slices short of a full loaf?
     
  11. Zed

    Zed Gradually getting grumpier

    You could streamline it with plastic tile edging quadrant. :D
     
  12. theBusmonkey

    theBusmonkey Sponsor

    That's so frustrating! I get slated by Mrs BM for carrying so many little fixings in the bus but it's invariably the only one I need that's missing from the box!
    So what happens...I shove a handful more in for the next trip:rolleyes:
     
  13. Zed

    Zed Gradually getting grumpier

    Doesn't work does it? Sods law and exactly why in the past I've tended to take nothing at all.
     
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  14. theBusmonkey

    theBusmonkey Sponsor

    ...or just use 70 plus rivets AND mastic for that hurricane proof look. I figured fibreglass fills, sands and paints....
    P1040599.jpg
     
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  15. Zed

    Zed Gradually getting grumpier

    I won't be making any holes in my roof unless the size works out that the holes are outside the canvas.
     
  16. Zed

    Zed Gradually getting grumpier

    Tidy job though. :thumbsup:
     
  17. theBusmonkey

    theBusmonkey Sponsor

    Thank you.
    Interesting isn't it, that you'd 'happily' rebuild a bus body with more holes in it than a tea bag & I'd be more than happy with some glass mat & gel coat LOL.
    Horses for courses ;)
     
  18. Zed

    Zed Gradually getting grumpier

    I didn't make the holes though. Poptops like mine are so prone to leaking that JK even sell a cap to put over the whole lot! As mine doesn't leak I feel honoured, lucky and disinclined to make holes. It's a sheet of aluminium on a flimsy ali frame with vinyl stuck over all the rivets.
     
  19. theBusmonkey

    theBusmonkey Sponsor

    haha very true. It was one of those "take a deep breath" situations. I got quite gung-ho about it after the first 20 or so
     
  20. mikedjames

    mikedjames Supporter

    I found that even a few kilogrammes on a Devon roof cap made it start to sag down as it would not quite pop up 100% when I balanced a roofrack bar on it


    [​IMG]

    Thorney Island military airstrip - testing seismic survey data links for OBC survey.
     
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