diy solar

diy solar

Recent content by ForestTheBoy

  1. ForestTheBoy

    Adding Solar Panels Question

    Wire sizing was something I had taken into consideration designing my system. From the panels to the mppt to the battery it's all 8AWG at a run of less than 15 feet. I think that should negate a lot of losses, but I should double check with the new projected amps before I decide. If I were to...
  2. ForestTheBoy

    Adding Solar Panels Question

    I'm not too concerned about clipping, I'll just get more power on less optimal days. I have a 280ah lifepo4 12v battery, so I've got plenty of charge current available. My BMS supports 120a, and I think the batteries could go higher if not throttled. What would the downsides be of running in...
  3. ForestTheBoy

    Adding Solar Panels Question

    Here's the listed specs for the panels. ELECTRICAL CHARACTERISTICS Power at MPP2 PMPP [W] 210 Short Circuit Current* ISC [A] 9.85 Open Circuit Voltage* VOC [V] 24.9 Current at MPP* IMPP [A] 9.3 Voltage at MPP* VMPP [V] 22.4 Efficiency[%] ≥ 18.7 Maximum System Voltage VSYS [V] 1000 Maximum...
  4. ForestTheBoy

    Adding Solar Panels Question

    Dang, that sounds like a crazy setup! I have the Epever Tracer 4210AN and my panels are flat on the roof. I don't think I'll really experiment with angled, I like the small amount of stealth I have. Max Voc for the mppt is 92V at temperature 25c. I'll look for my current panel specs. I...
  5. ForestTheBoy

    Adding Solar Panels Question

    I've been running my system off of 2 210w panels in parallel and want to upgrade to reach my Epever Tracer 40a MPPT's max charge rate. After some reading I realized that 520w isn't the max wattage allowed thought the mppt for my 12v battery, rather it's the minimum wattage to achieve 40a...
  6. ForestTheBoy

    Solar system "surges" when I'm fully charged, in sunlight while drawing power.

    I changed my settings according to this info, and I think I'm good! When my battery used to get full the BMS would turn off charging, but now the SCC controls that. I haven't noticed the "resetting or surging" issue anymore while testing in similar conditions.
  7. ForestTheBoy

    Solar system "surges" when I'm fully charged, in sunlight while drawing power.

    I can set the equalize time to 0, but can't set the equalize voltage to zero. I can also set the boost time, it's set to 120 minutes by default.
  8. ForestTheBoy

    Solar system "surges" when I'm fully charged, in sunlight while drawing power.

    Sweet, I'll try this out. I couldn't turn off the fancy settings so I just set them at 13.6 as well. I'll check out tomorrow how I'm doing in the same conditions again.
  9. ForestTheBoy

    Solar system "surges" when I'm fully charged, in sunlight while drawing power.

    I'd like each cell to Max out at 3.4v even though it's rated to 3.65 or so just to save some of its longevity. So what should my parameters be set to for these other settings if I want a Max 13.6v battery?
  10. ForestTheBoy

    Solar system "surges" when I'm fully charged, in sunlight while drawing power.

    So there are a few parameters I would need to change. It's currently set at a 14.4 disconnect. But I can't just adjust overvoltage, I also need to adjust these other settings I'm not so sure about. Here's a page from the manual stating some info regarding priority.
  11. ForestTheBoy

    Solar system "surges" when I'm fully charged, in sunlight while drawing power.

    It should be set to user, but I'll make sure it's set to a lower voltage than the BMS.
  12. ForestTheBoy

    Solar system "surges" when I'm fully charged, in sunlight while drawing power.

    Hey, thanks all for your replies. I'll get some more specific details when I can, but I'll say what I know off the top of my head. I run everything off 12v dc through my busbars hooked straight to my battery. All that is connected to that busbar includes; DC block, 1500w inverter/charger (I...
Back
Top