diy solar

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  1. G

    Figure out what you need before you buy damn it.

    Folks have different ways of learning and trying new things. Some like to be "hands on" from the beginning - learn by doing - try it and ask questions later. Sure, they will make mistakes, trial and error costs more money, they may get frustrated. But not everyone implements new stuff...
  2. G

    Best sequence to connect 12 to 48 volt DC to DC converter from car battery to Ecoflow Delta

    As I replied above, it will not be charging without the engine running and being monitored. The Delta automatically reduces the rate of charge to zero as it approaches 100%. I'm not sure of the value of fusing each side of the converter. The converter has a variety of built in protections as...
  3. G

    Best sequence to connect 12 to 48 volt DC to DC converter from car battery to Ecoflow Delta

    No remote turn on. It will not be running when I am not monitoring the system. Since it is feeding the solar input of the Delta, the Dekta reduces its input as it approaches 109% charge.
  4. G

    connecting inverter with the renogy 50 amp dc to dc HELP!!!!!

    In my case, I'm using a DC to DC "converter" to bring 12 volts from my alternator in my car up to 48 volts, and 40 amps from the alternator down to 10 amps to charge, in my case, an Echoflow Delta, to charge it up quicker. I'm wundering if the OP might be concerned that he blew out his...
  5. G

    Best sequence to connect 12 to 48 volt DC to DC converter from car battery to Ecoflow Delta

    What is the best (safest) cable connection sequence to connect a car battery to the Ecoflow Delta through a 12 to 48 volt DC to DC converter? I understand the car should be running either prior or soon after connections are made. See photo of device to be connected:
  6. G

    How much solar power should I expect from 500W panels

    About 75% of their rated value. ~4000 watts. Sort of like the quest for perfection: Most of us hope to approach it knowing the impossibility of achieving it.
  7. G

    Bypass diode sources and how to spec them...

    Yes, two. I just want to be versed in how to test and have spares if I need them.
  8. G

    Bypass diode sources and how to spec them...

    195 Watt 12V Solar Panel Rated power: 195W Open-Circuit Voltage (Voc): 22.8V Short circuit current (Isc): 12.23A Working current (Iop): 10.27A Output Tolerance: ±3% Size: 58.3x26.3x1.4inches weight: 28.2 Lbs
  9. G

    Bypass diode sources and how to spec them...

    Can diodes be tested in line or do the have to be removed from the circuit?
  10. G

    Bypass diode sources and how to spec them...

    So NMNeils suggestion of 100 volt diodes is inappropriate? I also thought that I would need at least 65 volts. I looked at a bunch of sources for 65 volt or greater Schottky diodes. I couldn't find anything more than 45 volts at 10 amps. I wonder if anyone even makes them.
  11. G

    Bypass diode sources and how to spec them...

    Thanks. I went to that link. None of the photos, no matter which of the 1,000 combinations of Schottky variables I select, look like my diodes. This was my result from doing a search on the Mouser site...
  12. G

    Bypass diode sources and how to spec them...

    What is a good source for bypass diodes? And what is the best way to spec them for a specific panel? For example, if a panel is ~21 volts, 3 in series, each 11 amps, rated at 200 watts? I've searched several electronics suppliers and I don't notice anything that seems appropriate. Can anyone...
  13. G

    Diode spec for 200 watt panel

    Does anyone know, for a 2-diode panel, what the diode specification should be for a 200 watt, 21.5 volt, 11 amp panel?
  14. G

    Wire gauge from vehicle battery to DC to DC converter

    Thanks. I'm going with 8 gauge.
  15. G

    Wire gauge from vehicle battery to DC to DC converter

    I have a DC to DC, 12 to 48 volt 10 amp converter that I would like to feed from a 12-volt battery in my car (engine running). What is the gauge of the cable I should use to feed that converter from the battery? It will be drawing 40 amps. The converter will feed the input of an Ecoflow...
  16. G

    Dumb question about physically moving solar panels

    $0.12 per k watt hour here. So 12 year +/- break even with labor? That takes me to 87. Hmmm.
  17. G

    Dumb question about physically moving solar panels

    Best method is age dependent: Age 18-35: One man taking it up a ladder on his shoulder. Age 36-55: Two man job. Age 56-65: Three man job. Age 66-75: Hire a crew Over age 75: Fagetaboutit. The break even point is too far out.
  18. G

    Diode specs for Echoworthy panels

    Does anyone know the spec for the diodes on the 195 watt Echoworthy panel? I wrote the company and they responded "30 amp". That is an incomplete spec. There are 2 diodes in that panel. I wonder if each diode is 15 amps and don't we need to know the volts? Also, Echoworthy claims the diodes...
  19. G

    EMP Protection

    https://www.solarreviews.com/blog/will-solar-panels-survive-nuclear-emp#:~:text=If%20a%20nuclear%20weapon%20of%20sufficient%20size%20is,electric%20grid%2C%20and%20yes%2C%20your%20home%20solar%20system. In the comments linked above, the expert states that solar panels not connected to anything...
  20. G

    How long can a car run at idle (stationary) to charge a battery bank like a Delta or two?

    No desire to be your level of "master mechanic." I don't have time left to know all that you know. And I do understand how those who believe they are at the top of their field can be very touchy and easily provoked with others who are not up their standard.
  21. G

    How long can a car run at idle (stationary) to charge a battery bank like a Delta or two?

    You remind me of a famous line: "You can't handle the truth." Torqued much? (That's a mechanical term.)
  22. G

    How long can a car run at idle (stationary) to charge a battery bank like a Delta or two?

    You and I are on the same wavelength concerning the impracticality of siphoning from modern vehicles as well as infrequent dire emergency use and practicality of using direct car power for SHTF situation. Most of the advice from others in this thread assumes that using the car's electrical...
  23. G

    How long can a car run at idle (stationary) to charge a battery bank like a Delta or two?

    For my use in a rare, one off event every few years as is my purpose, your assumed level of required efficiency is irrelevant. Sure beats trying to maintain fresh gas over the years. Yes, I'm familiar with Stabil, et al.
  24. G

    How long can a car run at idle (stationary) to charge a battery bank like a Delta or two?

    From wattstreet.com and many sites that cover the same topic: Due to the lower energy density, you need to run propane faster than you will gas a model, which is called fast burn. Because of fast burn, propane generators are less efficient than gas generators as propane models can produce...
  25. G

    How long can a car run at idle (stationary) to charge a battery bank like a Delta or two?

    I spent a couple hours researching siphons for modern vehicles. In many makes of vehicles, including mine, they don't work easily or not at all. In fact regarding my Mazda, the siphon (made for difficult-to-siphon modern vehicles) manufacturer will not guarantee it would work at all.
  26. G

    How long can a car run at idle (stationary) to charge a battery bank like a Delta or two?

    There's an infinite levels if DIY skills. Not all of us are you.
  27. G

    How long can a car run at idle (stationary) to charge a battery bank like a Delta or two?

    OK, I read in a couple of places that I can expect no more than 100 to 130 watts out of my 12 volt lighter outlet. That is why I am considering connecting my Echoflow Delta to the battery and "expect" the alternator to keep up with the Delta's 400 watt current draw. Before I actually do this...
  28. G

    How long can a car run at idle (stationary) to charge a battery bank like a Delta or two?

    No, neither cheaper nor simpler. The full tank of gas in my vehicle costs nothing more to buy than I already have. Two new propane tanks plus propane would be close to $100. While propane is more convenient to store than gasoline for the generator, it is much less efficient than gasoline...
  29. G

    How long can a car run at idle (stationary) to charge a battery bank like a Delta or two?

    I will be using this ** https://www.amazon.com/gp/product/B01N5W6HTG/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1 ** connected to my battery. There will always be the car battery in my vehicle alternator circuit.
  30. G

    How long can a car run at idle (stationary) to charge a battery bank like a Delta or two?

    Thanks. Great advice for a mechanic, which I am not and have no desire to be.
  31. G

    Why the distaste for Eco-Worthy kits?

    Bought 3, 195 watt panels from them. One of the first 2 came broken - glass punctured in shipment. The quick replacement and 3rd one were fine. The biggest gripe I hear is damage in shipment due to careless shipper and substandard packaging. The email response to questions and concerns is to...
  32. G

    How long can a car run at idle (stationary) to charge a battery bank like a Delta or two?

    How about simply: How long will vehicle x run stationary at idle on x gallons of gas?
  33. G

    How long can a car run at idle (stationary) to charge a battery bank like a Delta or two?

    I have a dual fuel 4,000 watt generator and 60lbs of propane that would last only a couple of days. I don't want to STORE gasoline except in the 18 gallon tank in my vehicle. I want to use the vehicle as backup charging station for the Deltas for when the genny is out of propane. Efficiency...
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