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  1. S

    WHOA! That was weird, Need some help plz

    Yes, that is true but then it gets balanced back down with the pack. If I set my max at the same as the end of the balance then I would have the issue as well but it would be above the max that the cell is rated for.
  2. S

    WHOA! That was weird, Need some help plz

    it's a DIY Lifepo4 pack. 2p16s, 32 cells. Tomorrow I am taking the battery apart, if I can't get another solution tonight. It's going to be hell to top balance them as I am off-grid and running on solar. haha good times are ahead. Please let me know your solution.
  3. S

    WHOA! That was weird, Need some help plz

    But why would the BMS be the issue when the batteries are what lost voltage and then won't charge up properly?
  4. S

    WHOA! That was weird, Need some help plz

    But they don't get up above that voltage. They stop there. I think the max is set so that it shuts down the system if it hits that level so that it doesn't overcharge.
  5. S

    WHOA! That was weird, Need some help plz

    No, I have never had them the exact same. The battery doesn't go that high. Should they be the same?
  6. S

    WHOA! That was weird, Need some help plz

    Hello, I have been running a LiFePo4 48v 2p16s battery for the last two years and two days ago it dropped off a cliff. Now when I try to charge it back up it keeps on hitting the max voltage for my settings and stops charging. I have attached screenshots of everything I have, I lost my logs...
  7. S

    Cabin 24v battery system. It gets cold!

    Hello, I am building a battery bank at our cabin in Canada. It is a summer cabin and the batteries will be left here during the winter months, it gets to -20c(-4f) in the basement in the winter where the batteries will be. It's a family cabin so not everyone is DIY capable/comfortable. I have...
  8. S

    3600w solar system only getting 2000w??

    I did change the absorption and float voltages but not that much, it doesn't even get to the absorption max voltage. On the MPPT it says bulk most of the day. My Max charge current is set to 70 or 100amps and my panels are only 9.69amp panels and they are in 3p
  9. S

    3600w solar system only getting 2000w??

    I do not have any fuses on the roof for this reason. I have all panels plugged into a busbar stud on the roof. I will climb up when I get a latter to check but the wire coming down to the MPPT is fine and showing the same voltage as the Cerbo. I will look for a DC clamp meter it's a good idea.
  10. S

    3600w solar system only getting 2000w??

    I see what you are saying but in the past, I have had no problem charging up. It also used to show the amount of power coming in regardless of the load and that is not increasing above 2098w. I used to have 2800+w during the middle of the day.
  11. S

    3600w solar system only getting 2000w??

    It doesn't matter because when I turn everything off it doesn't give me any more power from the panels. It is the same when there are loads and when there are no loads. But the AC load is usually around 700-1000w while charging. I used to get around 1400-1800w of charge while running my AC.
  12. S

    3600w solar system only getting 2000w??

    Hello, I have a 48v system with EVE batteries, 32 of them, and 9 400w panels on the roof of my converted bus. I run a Victron Mppt, Victron Quatro, Victron Cerbo GX and a REC Q1 bms. Recently the solar system started only sending 2098w max to my battery. I just cleaned the panels with no...
  13. S

    280AH EVE CELL LASTED ONLY TWO YEARS

    Hi, can you let me know what the battery was doing before you took it apart? Was it not charging, how did you know that it was damaged before visually inspecting it? Thanks
  14. S

    Battery not balancing well.

    After changing the balancing settings the battery balanced much better but the other day things didn't charge up as they usually do. I cleaned my panels and it started charging better but as you can see on the last few days the cells didn't balance well. Do you have any suggestions on why this...
  15. S

    Battery not balancing well.

    maybe, I run the AC all day long. I didn't think it would do that though. Nothing different than the other days.
  16. S

    Battery not balancing well.

    So this is what has happened since I made the changes. Why do you think it has a sharp drop on that one day?
  17. S

    Battery not balancing well.

    Thank you for your help
  18. S

    Battery not balancing well.

    Update After changing the balancing start and end voltages from 3.3 to 3.4 and from 3.5 to 3.55 the balancing is looking a lot better. The BMS didn't heat up to 55c either. I have one cell that is still low though. Any suggestions or just wait and see how it goes for a couple of weeks. I...
  19. S

    Battery not balancing well.

    how do I check this?
  20. S

    Battery not balancing well.

    What do you mean have control over the charge controller? I have a Victron Mppt and I belive it is set up to talk to the BMS or vise versa I changed my balancing today to start at 3.40 not 3.3 like I had it set to. I shut off the balancing at 3.5 I'm going to test this setting for a couple of...
  21. S

    REC Q1 BMS Balancing Question. 2s16p LifePO4 pack

    Hello, I have a 32 cell pack, 2s16p at 48V and the BMS is heating up at every charge. It gets up to about 53c while it tries to balance the cells. I have attached screenshots of the settings I have set in the BMS, do you think that the settings are causing the issue? Sometimes the pack...
  22. S

    Battery not balancing well.

    Ok, I will look for one. I am currently in Mexico so I will have to find one at a big city. Can you please explain this a bit more, I don't completely understand what you mean. Thanks
  23. S

    Battery not balancing well.

    Thank you. I have finally got a log going so that I am able to track the cells charge speeds. So once I have a week or two of data I will check to see if it is the same cells every time. I'll let you know. Once I have that data I will be able to swap cells to make the pack better.
  24. S

    Battery not balancing well.

    Ok, so that sucks. I did just let them sit without a charge. When I did that I didn't have any way of charging them because I was at an off-grid cabin with a very small solar system and my bus conversion solar system was not set up. What do you recommend that I do from here on?
  25. S

    Battery not balancing well.

    I am sure the pack fully charged that day. It fully charges every day there is sun. What do you recommend about the balancing at a low SoC. I attached the settings of the BMS to my previous reply. Do you think that is too low> Thanks and sorry for the delay getting back to you.
  26. S

    Battery not balancing well.

    48V 2p16S I put them all into parallel when I first got the cells and left it like that for about a week. All cells came out to the same voltage before putting them into the pack. I did not bottom balance the cells. When I purchased them they said they were class a EVE 3.2V280AH cells. What...
  27. S

    Battery not balancing well.

    Hi, I'm not sure what is going on with my battery/BMS. I have a 32 cell pack, EVE 3.2 280ah, with a REC Q1 BMS. When the battery is drained past about 60% SOC the next day as the pack is charged back up everything is great, the cells charge at an even rate and the BMS doesn't need to work at...
  28. S

    Fuse Sizing

    Hi, I just finished the grounding paper. It was interesting and also confusing. Everything is mounted right beside the frame and there are multiple bolt holes in my frame so it will be easy to do this. Thanks for your help.
  29. S

    Fuse Sizing

    I have a material called Puck Board. I used to use it for practicing stick handling. It's the type of material they use on the side of hockey rink boards. You can rub the crap out of it and it hardly damages it. I am going to put this in between each cell and on the outside edge as well. I have...
  30. S

    Fuse Sizing

    Thanks for clarifying that. I was planning on a 300amp fuse but maybe I'll look for a 200-250amp fuse. I will put the fuse right off the bus bar and connect it to the wire going to the switch. If the fuse blows then I will not be able to shut off the power when replacing it though. This was my...
  31. S

    Fuse Sizing

    Ok so I have a Quattro 48v 5000w inverter. So you are suggesting that I would need a 730amp fuse? Is this the Class T fuse that you are mentioning adding right by the battery? yes, that's what I have. I was thinking of putting it before my contactor actually and then putting the fuse on the...
  32. S

    Fuse Sizing

    Hello there, Would you have a moment to answer my questions, I'm a little confused with fuse sizing. I have a 16s2p battery (51.2v 560ah) bank and am looking for a battery disconnect/fuse. I actually purchased the BlueSea M series but I didn't see that it was max rated for 48v and has a 300a...
  33. S

    Opinions on how I'm connecting these 32 * LFP 280Ah cells (16S2P)

    Hello, do you have a finished product photo of your battery bank. I am planning on building the exact same set up on shelves as well. Thank you
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