diy solar

diy solar

Recent content by camelCase

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    HIQ batteries from eBay store--With UPDATES*

    I've got a couple of these batteries that have been doing OK so far (about six months of intermittent use). They both tested to just a bit over 100Ah. I'll be curious to know how these work out for you long term in what is a more demanding duty than mine are used for.
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    need a second set of eyes

    Looks mostly good. A 1000w inverter might be a bit much for a single 100Ah LiFePo battery. Most will max out at 100 amps of current and a 1000w inverter can pull (1000w/12v/.85) = 92A so there is little safety factor. You might consider a slightly smaller inverter, say 700w if you don't to run...
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    Chinese diesel heater questions

    Have you tried running with the fuel cap slightly loose? I wonder if some vacuum in the tank draws the fuel back after the pump stops.
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    Vanagon Solar/DCDC - Double check

    Interesting. That would push this controller further into the "Don't want!" category for me, then.
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    Vanagon Solar/DCDC - Double check

    I'm not sure about your understanding on the alternator loads with solar present. The wording is not the clearest in that section of the manual. The installation manual does call for a 75 amp fuse on the alternator feed wire, so I tend to think it will pull more than 25 amps if the solar current...
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    Vanagon Solar/DCDC - Double check

    Love the tape idea for mocking up the layout!
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    Solar controller PWM to MPPT upgrade - Suggestions?

    Apparently, the PowMr is a cheap Chinese knockoff of another company's cheap Chinese charge controller... MakeSkyBlue. I see from their website that they have recently changed from a metal case to a plastic type. If I was going to use one of these I would try to stay well under the rated...
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    Can TWO MPPTs share the same Negative DC-IN conductor?

    Can you draw us a picture to show exactly what you mean?
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    May have wrecked a couple of Flooded, 100ah Batteries.

    For further understanding the what sunshine-eggo is explaining see this https://en.wikipedia.org/wiki/Peukert's_law
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    Any flat earthers out there?

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    Can you run 12V system from 24V battery pack

    You can get 24v rated LED bulbs, too. I assume this is for an RV build? https://www.amazon.com/s?k=24V+LED+bulbs&crid=26N4N04XLA7C9&sprefix=24v+led+bulbs%2Caps%2C158&ref=nb_sb_noss_1
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    REC - Redneck Electrical Code

    A .22 cartridge should not be used to carry more than 22 amps. A .38 will carry 38 amps but rarely fit into common fuse holders. See special note about .357 cartridges.
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    Remove your rings or else this could happen! (GORE)

    One of my best friends (a mechanic) had that happen. Luckily for him, his injury was more like the first pic in the OP. I don't imagine that the second finger was saveable.
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    Chinese diesel heater questions

    Are you using the hard plastic fuel lines? If you're using soft rubber lines, then the pump can struggle to provide proper fuel flow. The exhaust pipe should have no more than 90 degrees of total bend in it. i.e. two 45 degree bends = 90 degrees. Also, there should be no upward slope at any...
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    Compact Car Alternator & PS Inverter

    Large interment loads aren't likely to harm the alternator, it's heavy continuous ones that will overheat things.
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