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  1. LFP addict

    Shenzhen Basen & Docan Quotes

    Yes,but they where sold as premium A Grade
  2. LFP addict

    Shenzhen Basen & Docan Quotes

    My Basen grade A cells are dropping from 3,5v to 2,7v when applying a 150a current in a 4s pack config. Emily talked with the engineers and say it’s too much current. It’s just one cell doing this. I bought almost a thousand cells with Basen and this is the warranty… total scam.
  3. LFP addict

    Xiaoxiang and SFK apps for JBD/SFK SFK-BMS-200-4S.

    try the https://overkillsolar.com/support-downloads/
  4. LFP addict

    JDB SP04S034-200A BMS SOC always show 0 percent

    This is the third BMS wich only show 0% SOC. All :JDB SP04S034-200A When i use the admin app to configure settings, i can change :Cell 100% Cap. Voltage to another value and right SOC % shows again. After a while it jumps to 0 % again. On my first encounter I discovvered when unconnecting a...
  5. LFP addict

    Rosen 48v Solar Powerwall

    Anyone did see read the warranty ? It says 10yr warranty. Nothing more nothing less. With this products price you expect some warranty about remaining capacity after a few years.. they do not so that for the most obvious reason...
  6. LFP addict

    Shenzhen Basen review

    After topcharge i made a 2p8s 24v pack. Test some testloads on it before my custommer placed it in his boat. When charging the bank with 24v120a two cells climbed to maximum voltage (3,65v)while the rest stayed at 3,3v. Never have seen this before, i needed a grade cells dor this custommer...
  7. LFP addict

    Shenzhen Basen 100ah Battery

    And, how did it go ?
  8. LFP addict

    Shenzhen Basen LiFePo4: XiaoXiang BMS bluetooth stopped working after two days

    If your'e a technician yes, but then you wouldnt buy a pack there anyways.
  9. LFP addict

    Shenzhen Basen review

    Final bid was 600usd from Basen. Thats 3920-600=3320=138usd p.cell for old stock cell b grade even c grade because 2 cells already died. My custommer is not happy..
  10. LFP addict

    Shenzhen Basen 100ah Battery

    your battery id completly discharched and is in protective mode. Charge it up with a (normal) or special lithium charger , after 10 minutes your battery must be discovarble with the app. If not, another bad product from Basen Shenzen.
  11. LFP addict

    Shenzhen Basen LiFePo4: XiaoXiang BMS bluetooth stopped working after two days

    You have a problem then with a sealed aftermarketbox from China..
  12. LFP addict

    Shenzhen Basen & Docan Quotes

    Yes, but they sold me b-grade cells for a long time, no problem with that because they make great solar batteries. But after buying a few so called A+ I'm done with them.
  13. LFP addict

    Experience purchasing cells from Shenzhen Basen Technology Co. Ltd.

    Can you do a discharge test at 1c, these B grade cells will perform terrible.
  14. LFP addict

    16s 280A for boat drive but cells slightly swollen from Shenzen Basen

    Basen send me LF280N from 02-2021 where i was promised LF280K with eve report to prove they where A+ grade. Never got the report. Scam compagny.
  15. LFP addict

    Shenzhen Basen & Docan Quotes

    I ordered automotive grade A+ cells from basen EVE LF280k with EVE report. They send me 24pcs LF280N from 02-2021without report. Total scam.
  16. LFP addict

    Shenzhen Basen LiFePo4: XiaoXiang BMS bluetooth stopped working after two days

    They know you do not send it back and keep sending us junk. Buy your batteries from a local supplier not from overseas.
  17. LFP addict

    Shenzhen Basen battery question

    Do not buy From Basen ! They sold me 24pcs old EVE LF280N cell dated from 02-2021 where they promised they deliver the newer and much better LF280K, grade A+ with EVE report witch they did not give. Even on the order they wrote 280K. I bought a lot of cells from Basen but now they really...
  18. LFP addict

    Shenzhen Basen review

    So after buying a lot of cells at Basen in the past year for my compagny, they finaly had the courage to scam me last month. I did order A+ EVE LF280K cells with EVE test report. at Basen I did pay 135usd per cell. They confirmed the deal and insured me that i bought A+ grade LF280K witch can...
  19. LFP addict

    Rosen 48v Solar Powerwall

    I`ve got a problem with these powerwalls who all claim >6000 cycles. They mostly use 50Ah cells, who cannot reach 6000cycles when reading the specsheets from CATL,EVE,REPT,etc.. Only the LF280K claims 6000cycles in their specsheets.. So 3500cycles -( resting 80%)is likely the case. But that`s...
  20. LFP addict

    JDB BMS -- New open source tool

    Do you have a link to the sources plz ?
  21. LFP addict

    Shenzhen Basen review

    My order was a bit larger, also more buldged cells and different values for the internal resistance. I started out with Basen with good cells, but it seems they are somewhat slacking in quality lately.
  22. LFP addict

    JDB SP04S028 max ampere anyone

    My favorite bms the SP04S028. Cannot find the maximum load with secons it can take before tripping. Anyone have a specsheet of this bms ? Even at the manufacturer no sheets. I need the specs on the 150a model.
  23. LFP addict

    New 200 amp rated JBD

    I cannot find any info about the "heatport" ? connector ? voltage ? output ? soldering ?
  24. LFP addict

    JDB BMS -- New open source tool

    JDM doesnt have a internal webserver..
  25. LFP addict

    JDB BMS -- New open source tool

    Can somebody help me out with a custom (android)app for the JBD-SP04S020 ?
  26. LFP addict

    Shenzhen Basen review

    They arrived yesterday, the boxes are good conditition. I checked almost 50 batteries, all in good condition, only one does have a little dent. They measured 2.90 volt and 18 mOhm. Hope my second (larger) order will be as good @ Basen.
  27. LFP addict

    Xiaoxiang "Pairing rejected" Android Galaxy S7/Overkill BMS

    paswword : 1243456 and it works. or 111111.
  28. LFP addict

    Cell Terminal Strain Relief, bus bars, and compression

    25mm² = 4AWG isn`t it ? 35mm² = 2AWG 25mm² will do 1500w/115Amps @ 13volt 35mm² will do 2500w/190Amps @ 13volt You have to match the wiring to your BMS, so 25mm²: max 120 amp BMS, 35mm² : max 200A BMS
  29. LFP addict

    Shenzhen Basen review

    Also 304's from Basen ?
  30. LFP addict

    Shenzhen Basen review

    Just ordered just over 100x 304EVE A-grade cells at shenzen Basen. Let`s see how this one goes.
  31. LFP addict

    Shenzhen Basen review

    it`s like this : grade b: no visible QR code (older and mostly cells that did not meet the specs) grade a: recent cells with QR code that are slightly off the specs (mostly internal resistance) grade a plus : recent cells with QR and testreport. I did 2 shipments on grade b cells, the first did...
  32. LFP addict

    NOAH'S ARK: Index of LiFePO4 cell manufacturers

    I don`t see the REPT cells on this list. Sold on alibabba.
  33. LFP addict

    Shenzhen Basen review

    The 99$ where B-grade cells. The A grade`s are more expensive but they come with guarantee specs.
  34. LFP addict

    Shenzhen Basen review

    I'm about to order 70 cells, the $99 are tempting but i like the 302ah's, too bad they come with welded studs. My last order I lost 50% of the cells to the welded studs because they damage easily in transport.
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