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  1. M

    Would you dare to use this cell?

    Thank you. Yeah, I'm doing an extensive documentation for the dispute, including capacity testing of all cells. It's a tedious process but I'm not letting this go. I will post the full story and documentation in the near future.
  2. M

    Would you dare to use this cell?

    Thanks Steve, you confirmed my suspicion, I will not use it! Regarding the leaking cell, I had no intention of using it! Also I have no intention using this cell where the internals got shifted: 🤬
  3. M

    Would you dare to use this cell?

    I got a horrible delivery from alibaba with banged up cells and in one case a leaking cell. All of this can be blamed for insufficient packing by an unserious supplier. Anyway. One cell has a bent terminal. The internal resistance and voltage of the cell match the other three cells from the same...
  4. M

    Need help!! Daly BMS and MPPT Charge Controllers

    Do you know how to disable the sleep time? Set the parameter to zero or?
  5. M

    Need help!! Daly BMS and MPPT Charge Controllers

    I think I know what the issue might be… By default the Daly smart BMS has a sleep timeout set to 10 minutes (if I remember correctly). The bms will go to sleep disabling charge/discharge. Since your current draw is so low it will work of the PV’d rather than the battery, and if the battery is...
  6. M

    Why not to use Daly BMS with MPPT controllers

    Nice review you found! What we see to the left is the display of the dummy load. It will display the voltage drop over itself. When there’s no load the voltage displays both show the same. The voltage difference when applying current is most likely the voltage drop over the wire. (Since the...
  7. M

    Fire!! Never cover LiFePO4 with wood!!!

    I've not read through more than seven pages, so someone else might have suggested this. Anyway, to me it looks like the whole pack was shorted. Looking at your first picture, heat seems to have been dissipated at the most negative terminal. If two cells where shorted in the middle of the pack...
  8. M

    Why not to use Daly BMS with MPPT controllers

    Interesting discussion. Great, one more thing to worry about! 🙈 My take on this, is a simple solution as suggested with a relay disconnecting the PV array from the scc. To trigger the relay a vat-4300 shunt can be used. It’s cheap and have a programmable over voltage protection (OVP) feature...
  9. M

    Can i have some help with some questions on BMS's and how i killed mine.

    This is my Daly pile of trash. I toasted one, my neighbour the other two. They are extremely sensitive. In two of the cases it was a balance cable that lost its connection. Think it was the negative at one time and a positive the other. The third case was that I dropped a small (signal) cable...
  10. M

    Unorthodox Top balancing for H/W reasons

    It is 50mA in the new ones, but that is definitely not enough, I agree. I have an active (5A) balance board also, but stopped using it. Seems to me it does more harm than good when you have a top balanced pack.
  11. M

    Unorthodox Top balancing for H/W reasons

    You can set it to balance during charge over a certain treshold, but the balance current is only 50mA 😑
  12. M

    Unorthodox Top balancing for H/W reasons

    So, new lifepo4-bank and new SMART BMS from Daly, how can this go wrong? According to the sales representative of the lifepo5-cells the lot was matched and balanced. My obvious questions were: A) matched how B) balanced, top or bottom when the reply arrived as A) by voltage B) both I knew...
  13. M

    Alibaba LiFePo4 batteries

    Off topic but I’ve ordered some stuff from BangGood previously, and they take a different route to tackle “custom fees”. For an additional fee you can “insure” against custom-fees, eg if the goods end up in customs and you are charged, BangGood will reimburse you. A little grayzone maybe 😜
  14. M

    Alibaba LiFePo4 batteries

    Import of lifepo4 cells to Sweden would normally add 4.7% customs fee and 25% VAT. With 1859 USD this equals to ~570 USD according to the customs calculator.... for the rest of EU I think the VAT is 20%. Welcome to Sweden
  15. M

    Alibaba LiFePo4 batteries

    Edit: The QR code on the cell in the last picture at the DHgate Item leads to “CYGEREEN Ebike Battery Store” at AliExpress. They have no similar cells in their store
  16. M

    Alibaba LiFePo4 batteries

    Thanks Sajje Compared to Sinopoly SP-LFP300AHA there is a minor difference in Operation Discharge temperature, otherwise the same spec as far as I can see. But the physical appearance is different. Same dimensions but the termInals are placed differently and the number of “cut-ins” on the side...
  17. M

    Alibaba LiFePo4 batteries

    ok.. Sajjen placed the order 29th of november and expecting it to arrive first half of January. If I order now from DHGate it’s estimated to arrive Jan 15 to Jan 20. AliExpress with UPS; 15-20 days. With standard shipping “before 02/26” (And no tracking). Let me ask my question in a different...
  18. M

    Alibaba LiFePo4 batteries

    Hi there LIFEPO4 experts! I have a 24v system with a 3Kva all I’m one solar inverter. (EASUN 3Kva24+). It’s a MPPSolar clone. I’m about to upgrade my old lead-acid bank to lifepo4 and found two possible options: 1. Sajjens “find”, 16 BLS 150Ah cells from AliExpress @ 1580$ incl shipping (by...
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