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My battery pack is 128 LFP 280AH 48 volt system. It is self-balancing and keeps the cells within 10mv. I have 2 Overkill BMS 's and also two 5 amp balance boards. I balance just the top end of the Cells. The balance boards turn on at 54.2 volts to keep the Cells all good. Everything on the...

I found this thread to be rather interesting in a number of ways: OP had a simple requirement. Use the batteries with the inverter from 3pm-9pm to power around 1500 watts of load. At 9pm then switch the inverter to pass through. In other words use the grid to power the 1500 watts of load. At...

I just wanted to share my system and maybe give back a little bit of all I have gained from you. First a big thank you for all of your insight and knowledge. It was a big help on obtaining a quality system that should last for years to come. My wife was the great instigator of the project. She...

I have 10 of these in the yard. I adjust the tilt each month to maximize the solar. The supports are 2" galvanized pipes cemented into the ground. I use super struts from Home Depot for the cross support of the panels. Everything is bolted together with 1/2" bolts. Things have been up and...

I purchased 16 of the 280 ah cells dealing with Jenny Wu from Docan and I could not be happier with the results. I did not top balance them before using them for a 48 v system. When the cells started to reach 3.5 V+ through the charge controller then I was able to top balance the ones that...

I live in Maine and I can get our pool up to 87 degrees with 10 4' x 8' solar hot water panels. The water comes out at 130 degrees with a 5/8" garden hose. I calculated out the btu's and I think it was around 160 kbtu per hour. I picked up the panels on the cheap from someone who removed them...

I did pretty well for the month of December. I made 605kwh so far. I make sure the snow if off the panels and adjust the angle of the panels to help with the low sun position. My daily low was on December 18th for .94kwh. My daily high was on December 8th for 47.14kwh

I look at SS as just another company. I know a lot of people have dropped some serious money on their stuff. Also a number of people in this forum have had issues with some of their stuff that was purchased. It seems to me after reading all of the complaints and what not regarding SS then it...

AIO have much higher idle current than seperate components. I believe that DIY battery banks, Charge Controllers, Low Frequency Inverters in the long run are a cheaper and better than the AIO. You will probably pay more in the short term but I think that with the savings rendered by less idle...

I never have top balanced my cells to 3.65 volts. It seems to me to be a waste of time and also lots of potential to go wrong and possibly reducing my cell pack capacity. I just hooked my 128 cells up to how I was going to use them and then hooked up my charge controllers and my inverters and...

I just added another 64 LFP Cells to my system to make a total of 128 LFP Cells. They are 280 AH Cells. I purchased them from Docan Power. All the Cells were pristine in appearance and the voltages were all within 3.304-3.306 volts except for one cell which was low at 3.256 volts. The cost was...

Hmmm. Maybe I should go with another 128 280ah Cells.

Not that big of an Arc? I wish that I would have saved my 200 amp disconnect switch that I ruined. I took it apart and the contacts had some nice big pits in them. If I still had it I would post the pictures. It totally destroyed my contacts. When I was a bench tech back in the 80's I use to...

I am sorry that you experienced such extreme challenges on assembling your battery pack. I found it to be a very rewarding experience. First off, the compression thing is not for me. My Cells are not compressed and are doing fine. Top balancing wasn't for me either. It just seemed like a...

I originally was going to go with 6 volt lead acid batteries. They are rated at 75 amps for 120 minutes. They cost about $110 each. So each battery has 900 watts or .122 per watt. I ended up purchasing 64 LFP Cells (280ah) for around $9500. That figures out to 57344 watts or .166 per watt. Now...

I seriously doubt that you have 200amp batteries. The math just does not add up

After having my Magnum Ms-pae 4448 for a while, I can say that I am totally impressed with the idle current and efficiency it has. In Maine we have plenty of days without sun and the batteries have never discharged to the point of the inverter totally shutting down. I think the ide current is...

Windy here as well. This is what I use and built from material at Home Depot. Wind rocks it a bit but it seems to be working great.

This forum is an excellent way to get a positive outcome from SS. I don't think I would waste 2 hours of my time on the phone trying to get an inexperienced tech. A better approach would be to just describe what is not working on your equipment and then just reference: @SignatureSolarJames or...

I have purchased 64 cells in Feb 2023, 32 cells in Apr 2022, and 16 cells in Feb 2022. All of the cells came from Docan. The cells were all pristine with no bloating. One of the cells most recent purchased had a voltage variance it was 3.256 volts. The other 63 cells were between 3.304 and...

February, back off grid again until November.

I will give you an example of what I experienced today. It is a cold day around 20 degrees and partially cloudy. I have 4500 watts of panels. My peak power today was 5530 watts and 137 volts. I have hit 142 volts so I know the voltage does go up with the cloud edge. It is something to consider...

Without a generator, then it will be difficult no matter what you do. When the sun plays possum for days on end and the snow comes down for a few days, then it kills all your solar no matter what you have. I have batteries for 3 days and 42 panels and the months of Nov-Jan still find me needing...

He has 2 200 ah batteries. It will take a minimum of 40 hours to charge the batteries.

I see a number of the Magnum units on Amazon now. I am running two Magnum mspae 4448 inverters. They have ran rock solid for the year I have owned them. I use around 30kw a day through the Magnums. The Magnum expandability is really great. I am running two Magnums networked together and you can...

No it does not look good for you. The batteries are 110 x 12 = 1320 watts each. Lead acid you can only use about 50% so that means you have 1320 x 3 = 3960 watts /2 = 1980 watts available. A 2000 watt hot tub will suck those batteries down in less than an hour. It is not even considering the...

My Solar total is 8.163 MWH since November 21. I recently installed a Smart Shunt to check for efficiency of Kwh put in the LFP's vs Kwh consumed by the house, and I was very pleased that I was able to use over 93% of the power put into the batteries. That includes idle current draw of the...

The way I look at it may be different than others. I purchased 112 Cells from Docan and my experience mirrors @MrM1 experience precisely. The Cells work and as far as giving them a grade, to me is just a waste of time. Now that you purchased your cells then you can either test them to death and...

I would not use the busbars with the nut only catching on a few threads. I can see the stud stripping and then you will have major problems. It would be better to catch all of the threads. I am not sure how you could address it with the flexible busbars. I use 1/2" copper L pipe for all of my...

I have two battery banks of 280ah LFP Cells setup as 4p16S or 114,588 kwh. 128 total Cells. I just put up another 12 panels making it a total of 42 solar panels. Wintertime is tough in Maine to keep them all charged.