diy solar

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  • Post in thread: Off grid internet

    We are online today with starlink. If you can afford it, I also suggest to put in your deposit. It took us 8 months and I hear it's first come first served. Random speed test result of 256Mbit down, 43Mbit up, latency 22ms, jitter 8ms We live in a canyon with no overhead obstructions. I...
  • Post in thread: Off grid internet

    Our starlink has been hooked up to a kill-a-watt since we got it. Its a gen 2 model with a rectangle dish. It has been in temps as low as 0F and had 6" of snow on it. An average power draw of 67.22w. This power supplies a heater, dish, and Wi-Fi router. Ive not checked the draw on a...
  • Post in thread: Going from flooded to LiFePO4….. And upgrading…..

    LFP batteries will charge with any current coming into them. My 48v LFP batteries ran in parallel can accept 1-100A current with suggested charge current of 50A though I believe the C rate is a bit higher running them in parallel. With 3 batteries in the bank they generally don't see more than...
  • Post in thread: MidNite Solar Classic 250 MPPT Charge Controller (NIB)

    I have a MidNite Solar Classic 250 for sale. Box is unopened with brand new product. Asking $675 shipped. The reason for selling is because I needed a higher powered MPPT charge controller and ended up going with PT100 for my setup. Never opened the box. Purchased in March 2021...
  • Post in thread: LiFePO4 Voltage Chart?

    I've been watching my battery bank voltage along with my battery monitor kit which seems to be a good judge of +/- AH. I reset my AH meter at full charge yesterday and now my 345 AH bank is down 110AH and showing 46.0V (my 14S configuration is fully charged at 51.0V). According to the voltage...
  • Post in thread: Already outgrowing my new solar system

    Thanks for everyone's replies and suggestions. As I said I purchased 5pc more eco worthy 195w panels. Every one of them arrived undamaged by UPS (thanks BTW). I hooked them up around 3:30pm and here I sit with more juice than normal for this time of day during these AC powered days. Its...
  • Post in thread: BigBattery.com 48V LAMA - LiFePO4-115Ah-5.3kWh

    One of mine is for certain defective. Today I caught a glimpse of some smoke coming from the BMS. Not quite fast enough to get the smoke on video for their tech support. Worst smell in the world! Still waiting on a reply from tech support for the next steps. Support is slow unfortunately...
  • Post in thread: 2 Hours on the phone with Renogy tech-support! Why would anyone recommend products from this company?

    When you pay enough restocking fee's you will start to call the company first before you give them your money. I'm not a fan of buying off of Amazon for easy returns even though that's what a lot of customers do. Companies, while I don't stand up for their rights anymore than I would the...
  • Post in thread: Parallel LFP batteries drop voltage during absorbtion, what causes this?

    I should have stated that the 44.8v, I have set in my charger/inverter (LBCO), not from the BMS. I misspoke with LVCO.
  • Post in thread: The ruling class and solar

    Am I blind or does it seem like the ruling class opt's for fancy yards instead of solar arrays? Have you ever seen a picture of member of the ruling classes property? No wind generators or solar arrays. I was shocked to see President Obama's home (very beautiful BTW). It looks like a power...
  • Post in thread: BigBattery.com 48V LAMA - LiFePO4-115Ah-5.3kWh

    Yes I have mine connected up to the bigbattery.com parallel box. The LED display seems to be a better measurement of amperage in or out from the parallel bank. They play well together however as I mentioned, one of the batteries BMS gets extremely hot and this particular battery usually is...
  • Post in thread: Magnum PT-100 faults during sub zero temps

    We've had a cold snap come through this week. Got down to -10F and -5F the past two nights. I woke up to check the equipment in the shed and saw the PT-100 had F02 fault on cold night 1, and last night was F08 fault. Both times it recovered by following the instructions in the manual to reset...
  • Post in thread: Already outgrowing my new solar system

    We figured the usage calculations based on the house but with 2 AC units running in campers its sucking all the energy so the calculations are out the window for the next couple months. I am sure once the house is finished we'll have more power than we need but for now it seems like we gotta...
  • Post in thread: Bigbattery.com Llama 48V 115AH setup questions

    Hey everyone. I'm a new member and new off grid homesteader. Ive invested a small fortune in our solar setup and amazingly we got it up and going. Now I'm onto the parameters on the inverter/charger. I am a bit confused by the parameter spec sheet. Based on what I am reading the battery...
  • Post in thread: My eco worthy 195w panels just performed over spec

    I got a max PV input of 4.0Kw off of my 20x 195w panels today at noon. I usually see 3.6 or 3.7 Kw as a high even on clear days. The setup is only about 2 months since it was installed. Seemed like some clouds in the sky at the time which surprised me. I have a little more confidence in...
  • Post in thread: BigBattery.com 48V LAMA - LiFePO4-115Ah-5.3kWh

    I was able to get 2 Llama's warrantied. One seemed to have been out of balance and the other had an issue with BMS overheating to the point of smoking. It took about 5 weeks to get the repaired batteries back. I charged each battery up to 50.3v and hooked them up in parallel with my one...
  • Post in thread: Bigbattery.com Llama 48V 115AH setup questions

    Thanks! We've already purchased the batteries and yes we are off grid. Perhaps on the next go around we'll be better prepared to make the best choice. We've already made a few expensive purchases that had to be returned with restocking fees. If anyone has these batteries running with a...
  • Post in thread: Combiner breaker tripped mid day

    I'm going to shut down absolutely everything once the sun is down. With my headlamp I'm going to remove the old breaker and install the new one in the correct orientation. I took some videos today of my system running right about solar noon. Saw 63.1 amps on the PT100 once. About a 9A load...
  • Post in thread: Magnum ME-ARC / PT100 Absorb Done?

    Is there a preference when Absorb Done per the ME-ARC settings? Magnum recommended 1.5hrs for my 3p 48v bank. Bigbattery.com says absorb doesnt apply to LFP batteries in there parameter sheet and recommends 3.65v per cell for all charge stages, which is 51v for my 14S batteries. I am charging...
  • Post in thread: Parallel LFP batteries drop voltage during absorbtion, what causes this?

    Thanks for your reply. That sounds very likely. I can't unfortunately. It would likely require me to open the battery and I believe that would cause warranty issues. Do you think it may balance out during discharge? The 14S pack is now at 44.8V discharging at 8A
  • Post in thread: Bigbattery.com Llama 48V 115AH setup questions

    I talked with Magnum technical support yesterday trying to answer some looming concerns and check the settings. After stating my ignorance and conerns, they had me reset the MS4448PAE by pressing and holding in on the internal power button for 15 seconds until the charging./inverting LED...
  • Post in thread: Combiner breaker tripped mid day

    The whole combiner box was pre-wired with the breaker in it's correct position. We initially had some problems with our cutoff switch (doesn't work or wrong rating? It never worked.) and during the troubleshooting we found that flipping the breaker and disconnecting the cutoff in-line got the...
  • Post in thread: Off grid internet

    I was getting between 0.5Mbit and 6Mbit using my phone and a cellular booster (4-5 bars), without a booster it's closer to 0-2 bars). Connectivity depends on where you live and what sort of signals are available. At our elevation, line of sight to towers is non-existent so we're just skimming...
  • Post in thread: Dog Show Battery

    I was arguing in favor of a generator and didn't convince you, that's fine. I hope you find what works best for you! GL in your future shows and I am sure the neighbors on-site will appreciate the less noise.
  • Post in thread: Parallel LFP batteries drop voltage during absorbtion, what causes this?

    Ever since I started emailing BB through my non yahoo email account I've been getting better correspondence. Both batteries were carefully packaged up and secured on a pallet. Pickup was scheduled for this past Monday but they didnt get picked up until Thursday (due to our location and the...
  • Post in thread: Wind generator with solar panels?

    We thought about getting a turbine for supplemental energy after the sun goes down. We decided that if we added more solar panels it was a better benefit over the course of the day. We may still visit that but around here the winds are not as consistent as other areas due to our topography. I...
  • Post in thread: Parallel LFP batteries drop voltage during absorbtion, what causes this?

    Finally getting the ball rolling on RMA for my 2 batteries. Communication has been difficult but helpful when it happens. They require me to re-box the batteries and ratchet tie them to a pallet. They arrange the freight pickup which I have to pay, they do the repair and replacement and pay...
  • Post in thread: BigBattery.com 48V LAMA - LiFePO4-115Ah-5.3kWh

    I just requested an RMA on my battery. It would have been nice to have the top section only sent out but frankly I'm not 100% certain that's the issue (or only issue?). They said I need to ship it back via Freight, which I expect will take a week or so to get there, then they told me they will...
  • Post in thread: Bigbattery.com Llama 48V 115AH setup questions

    Thanks for the suggestion. I wonder why bigbattery.com suggests 51V voltage across the board. Their 16S packs parameters are even higher. In regards to float voltage, I've never seen my PT100 hit float. It will go into bulk and then absorb once it's close to charge voltage. Usually I am...
  • Post in thread: Parallel LFP batteries drop voltage during absorbtion, what causes this?

    The LVCO happened around 3AM this morning, BMK reported -60 AH. Solar began charging the battery. It was jumping voltage quite sporadically 44.3-49V. It accepted about 10AH and then hit over voltage 52V+ and settled back into 51.0V. BMK showed -49AH with the battery full. After turning the...
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