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  1. sunshine_eggo

    Why negative side battery 1 out of 4 drains faster

    Need to move BOTH to the (+): inverter and charger.
  2. sunshine_eggo

    Panels are not showing charge on controller

    PV 5V seems irregular unless it's dark outside.
  3. sunshine_eggo

    Why negative side battery 1 out of 4 drains faster

    Because you have connected them improperly: By connecting to the same string, loads/sources favor that string. Need to move the (+) to other string. Interconnects should be ON the battery terminals, not on top of the cables.
  4. sunshine_eggo

    Panels are not showing charge on controller

    https://www.mobile-solarpower.com/battery-monitors.html "This shunt will allow you to monitor power flow in only one direction" It's likely ONLY showing the loads.
  5. sunshine_eggo

    Question about how to interpret our Charge Controller numbers

    Vmp=41.3, so that's the voltage the panel needs to work at for max power. 330W/12V = 27.5A A 30A controller will do it. If you add additional panels, you will need a larger controller. Consider that you are likely going to get 3X the solar you had with the PWM controller. Per my post...
  6. sunshine_eggo

    48v 64 cell SAB 60280 Batrium K9 Rack Build

    Why? I've run the numbers. .094 sq-in of Cu v.s .250 sq-in of Al (2.66X the cross section). Do I want to spend $1300 on Cu bus bars or $450 on Al?
  7. sunshine_eggo

    100% Disabled Vet (Combat-Related) Needs Solar Energy Solution

    I'm in phoenix. I'm not judging you. Summer months see 110kWh at my place. But you are still running an entire A/C unit that is horribly power hungry, and if the thermostat is not getting conditioned air, it will never shut off. Unlikely that vent control gill give you a meaningful...
  8. sunshine_eggo

    Panels are not showing charge on controller

    Is it that the meter shows no power, or the MPPT is actually not putting out power at all? Have you confirmed no current with a measurement? Also, that meter is not a battery monitor. It will not show Battery % SoC. It's more of a power meter.
  9. sunshine_eggo

    Charging w a 180amp Leese Neeville combine whizzer

    LiFePO4 is more accurate. LFP for short. Didn't know that. That would be awesome and many might be interested. Check out the Home Brew section when you want feedback: https://diysolarforum.com/categories/home-brew-solar-electronics.77/ Might work. If you have crap wiring between the...
  10. sunshine_eggo

    Question about how to interpret our Charge Controller numbers

    I would get the panel info before I purchase the MPPT. If you have a receipt or documentation on the panel brand and model, can get the info online.
  11. sunshine_eggo

    Question about how to interpret our Charge Controller numbers

    20A * 13V = 260W, so it's definitely an improvement, but still a little small. Note that you'll only get 330W at high noon, so you'd probably only be losing anything in the middle 3-4 hours of the day. In any case, you're going to get 260W vs. the 110W. If it's your only choice, great. If he...
  12. sunshine_eggo

    100% Disabled Vet (Combat-Related) Needs Solar Energy Solution

    You have amazingly high consumption. Running A/C for a whole house is a massive burden. Mentioning internet and laptop is like mentioning that you might take a lil' sip from the waterfall. Realistically, how much money can you throw at this? Does your disability prevent you from doing this...
  13. sunshine_eggo

    Hello from Wes

    Welcome. Just to make sure... does the fridge also run on propane? That type also runs on AC. Don't think so, but I need to make certain. If not, then your best plan is to determine your consumption. If you can access the power plug, buy a kill-a-watt meter and measure the power output for a...
  14. sunshine_eggo

    Rant on terminology...

    I did. I'm back in therapy now.
  15. sunshine_eggo

    Question about how to interpret our Charge Controller numbers

    It's on the label on the back of the panel. Are the batteries in parallel for 12V or in series for 24V. Based on your numbers in your first post, they're 12V. If you want to series your batteries for 24V and replace your inverter, then you could likely use your 330W panel with somewhat...
  16. sunshine_eggo

    Charging w a 180amp Leese Neeville combine whizzer

    Assume by LiPo you are NOT referring to Lithium Polymer - typically pouch cells. If you are, please don't. Many DC-DC are < $300. Almost all MPPT controllers require an input voltage notably higher than battery. They are step-down DC-DC converters. the problem is that "bulk" on a LFP...
  17. sunshine_eggo

    Question about how to interpret our Charge Controller numbers

    PWM of any amperage will force your 330W panel to output 110W. Period. It's the way they work. Your panel NEEDS to operate at about 40V to produce its 330W. PWM forces panels to work at battery voltage. The only thing that unit will get you is a lighter wallet and lost time. If you can't...
  18. sunshine_eggo

    48v 64 cell SAB 60280 Batrium K9 Rack Build

    I need ... 112 feet of that copper... so painful. I'm proably going with 1/4" x 1" Aluminum... dirt cheap by comparison... about 1/3 the price and about the same conductivity... and more worry about surface prep.
  19. sunshine_eggo

    Do all Victron Multis hum this much at idle?

    To me that thing is like a purring kitten. She growls at me when I start asking for a lot of power. rawr.
  20. sunshine_eggo

    Multiplus 3000/24 buzzing while charging even at low current

    How many low frequency inverters have you owned? If you don't know the answer, how many have been as heavy as the Multiplus?
  21. sunshine_eggo

    Rant on terminology...

    LOL... I think we just started over on page 5... :P
  22. sunshine_eggo

    Question about how to interpret our Charge Controller numbers

    It should be the same as your battery voltage. If that's the case, why does it say PWM on the face of the unit?
  23. sunshine_eggo

    New to solar

    No. You might melt your alligator clips. All connections need to be tight and solid.
  24. sunshine_eggo

    Need some advise regarding my first build.

    Gotcha. Cool. As long as you keep in mind that inverter output and grid must NEVER touch AT ALL even on only the neutral. Link to data on that switch?
  25. sunshine_eggo

    New to solar

    100AH AGM typically are rated charged around 10-20% of the rating, i.e., 10-20A. Some are as high as 30%. Your battery may have a specific rating. 600W/12V = 50A, which is definitely too much; HOWEVER, you could choose to only wire one panel OR assuming you're in the northern hemisphere...
  26. sunshine_eggo

    Need some advise regarding my first build.

    Not following you. I think so. Lost me. I don't think so. The inverter can be configured to just sit there with the batteries topped off and pass through the AC input to the loads. That is the default mode when AC in is present. If you want to bypass the inverter, you would need a...
  27. sunshine_eggo

    Question about how to interpret our Charge Controller numbers

    If it is PWM, yes. If it is MPPT, no. I'm likely at least a few thousand miles away, so I'm just guessing. :)
  28. sunshine_eggo

    Which Chart for Calculating Required mppt/inverter

    Plan for STC when sizing components. Keep NMOT in mind when you're grumpy about the system not performing to spec. Best to use STC and do a detailed analysis of your available solar with PVWatts. You can actually simulate an array for your location and download HOURLY performance data. It...
  29. sunshine_eggo

    Solar generator for small sailboat?

    I can't comment on seaworthiness, but... Find your ACTUAL loads first before you spend a lot of money on something that disappoints you. Those things are neither efficient, nor can they provide a lot of capacity. Energy Audit spreadsheet in Resources section.
  30. sunshine_eggo

    Do all Victron Multis hum this much at idle?

    Normal for me. https://diysolarforum.com/threads/victron-multiplus-noise-support.4057/ The above seemed to have a potential problem. https://diysolarforum.com/threads/multiplus-3000-24-buzzing-while-charging-even-at-low-current.32200/#post-392019 Multiple posts on the Victron Community...
  31. sunshine_eggo

    Need some advise regarding my first build.

    I would hesitate to purchase something like that on ebay. I would choose to purchase for $100-150 more from a known distributor. I hear you. Been working on mine for 2+ years. A simple breaker (which you need to install anyway) on the L wire to AC input is an effective switch to toggle grid...
  32. sunshine_eggo

    Question about how to interpret our Charge Controller numbers

    The problem with PWM is it forces the panel to work at battery voltage. Assuming a 24V panel, it likely operates at about Imp = 8-9A (round to 8.5)A. When you force it to work at battery voltage, 8.5A * 13V = 110W... 1/3 of the panel's potential. 330W/12V = 27.5A. You need a 30A MPPT...
  33. sunshine_eggo

    Looking for battery build advice

    Going overkill BMS? 100A should be good. If there's ANY way of deploying solar, even a 100W panel would likely restore about 10-15% of your capacity with good sun on your 2 day fishing trip... like refueling on the water. :)
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