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diy solar

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  • Post in thread: HELP PLEASE I think I may have some bad cells

    The fact that you don't know the difference between connecting cells in parallel and connecting in series, and are attempting to charge the cells connected in parallel with a 12 volt charger is a testament that you have no clue what you are doing. My advice to you is to stop everything you are...
  • Post in thread: CATL 271Ah cell issues.

    Read here. It's unfair of you to make false claims and you need to stop. Michael is a stand up guy....I feel really bad for him having to deal with this crap. It's not his fault. Someone else, whom I will not name, also made the same accusation and I corrected him as well and stated I would be...
  • Post in thread: CATL 271Ah cell issues.

    If only this was a domestic shipment then it would be easy. I will be honest by saying if it was me, I would not accept any of the cells that were damaged due to poor packaging and would be asking for a full refund or replacement. I am not going to point fingers at UPS either. The way this is...
  • Post in thread: CATL Sodium Ion Cells

    Has anyone watched this? :) And here is an article I found interesting. https://www.nextbigfuture.com/2021/06/catl-will-start-mass-producing-sodium-ion-batteries.html
  • Post in thread: CATL 271Ah cell issues.

    When I ordered cells from Michael he told me I could pay by check, credit card, cash, PayPal friends and family or PayPal goods and services. He never suggested what my method of payment should be, he totally left it up to me. I don't know why you have jumped to so many conclusions without...
  • Post in thread: Dongguan Lighting: Purchase 280AH LiFePo4 cells. Purchase & Review

    Are you implying BLS manufactures EVE cells? It's my understanding BLS doesn't manufacture anything. If you have any facts to prove otherwise I would be interested. The suppliers advertise cells as grade A but we have found EVE cells are not grade A. Some have tested at 265ah. The only way to...
  • Post in thread: Best LifePo4 charge controller settings known to man for Maximum Service life and Minimum battery stress!!! 5,000-10,000+ cycles?

    Test completed. DISCHARGING: Discharge C rate is very low....apx .06C. DROK meter displayed 265ah's with full battery and 11.5ah's with an empty battery. I don't fully trust it because it uses a Hall Effect sensor. BMS displayed zero amps remaining and still discharging because it's not...
  • Post in thread: 310 ah LifePO4 from Aliexpress take 1

    Personally I am wondering why you insist spamming the forum with your problem and disrupting other peoples threads? No one can help you except you and you have been given many suggestions, the best one IMO is dispute the charges with your credit card company. Bud Martin linked to the thread...
  • Post in thread: Will, your current video "Quick Morning Rant: Chinese VS American Solar Products"

    I wanted to post something about that statement and I am glad you did and thank you for sharing. :) I have known many obese people throughout my life time and most are productive and compentent members of society. I also see obese people all the time especially at fast food places, and while...
  • Post in thread: Lishen 272ah Cells Aluminum Case Positive?

    Regarding Lishen cells, it has been pointed out here that what is seen between the aluminum case and the negative terminal is considerable leakage current.. With EVE cells it was confirmed here when measuring between the cells negative and the aluminum case there was very little leakage current...
  • Post in thread: Are there any inverter/charges for under $500 that don't suck?

    Here are a few more pics. The unit is well constructed and beautiful...no scratches, dents or other defects. The only thing I don't like is they use din rail terminals for the battery connections. It might be ok. More when I get it hooked up and review how well it behaves.
  • Post in thread: Our NEW GO-TO LiFePO4 vendor...09.20.21

  • Post in thread: Leaking Electrolyte from Bigbattery Powerblock

    I think I would go by the combined experience others have had with Big Battery and not rely on only the experience of Will. If you search the forum and read through this thread you will be able to make a decision. The biggest problem I have with BB is the honestly of the CEO and I won't say any...
  • Post in thread: Leaking Electrolyte from Bigbattery Powerblock

    I believe the reason Mr. Green never gave anyone any updates is because he found cell(s) in Seth's battery leaking. There is no way he could spin Seth's photos. He already tried spinning with the grease thing even though the photos showed something much worse than white grease. White grease is...
  • Post in thread: Cell Terminal Strain Relief, bus bars, and compression

    I am attaching an image of another way to build a pack if using cables or braided busbars for the interconnects. I forgot who posted it initially but credit goes to him.
  • Post in thread: CATL purchases from Michael B Caro

    What is the purpose of this thread? What do you intend to do with the information provided to you? You have not answered the question. What are your intentions...motives? There are not nearly 300 people. There are a total of 300+ cells involved according to Michael. Everyone who received...
  • Post in thread: Pictures - Battery bank clamp assembly

    It wouldn't hurt to put some type of insulator between the cells, between the cells and the aluminum plate, and between the bottom of the cells and the aluminum plate.
  • Post in thread: Luyuan / Amy - Type 66 & 71 in matched set?

    Well here's the thing. Everyone is supposed to know what they are getting before cells are shipped. It doesn't always work out that way as we are very well aware... :) Amy has been touted as a respected and trusted supplier...also by yours truly...me, myself and I. If things are changing with...
  • Post in thread: Deligreen 310Ah cells SCAM

    Deligreen does not look so bad now do they....in comparison to this so called lab. I have not seen any cell bulge like that here on this forum unless it was over charged. What's really sad is there was most likely nothing wrong with the cells to begin with. And now there is no recourse to ask...
  • Post in thread: Deligreen 310Ah cells SCAM

    Those of us who have been around know most of the suppliers falsely advertise in some form or another. Some buyers have more expectations than others. I can only say what I have said many times before. People need to consider the "commodity cell" cost per watt hour vs buying true new Grade A...
  • Post in thread: Leaking Electrolyte from Bigbattery Powerblock

    Big Battery said the batteries sent out for review, like Will's, were all prototypes. They claim no prototypes were sold to customers. Therefore any customer who has received the battery should have the upgrades.
  • Post in thread: Help! Newbie almost blows a hole in his face with MPP 3KVA 24V

    Summary: 1: The leads on your meter are reversed. The black lead should be plugged into the common port of your meter. 2: The black terminals on the cells are positive. The brown terminals are negative. 3: I don't see a fuse or breaker shown in the attached photos. Always use a fuse or...
  • Post in thread: Does anyone need premium Li-ion battery to DIY your solar system?

    I agree with @Ryang. My suggestion is to post prices for your batteries including shipping with the option of sea or air. Or set up a website for the "little" guys to order cells from. Surely you could be competitive with the other distributors considering the volume of cells you have. If you...
  • Post in thread: Leaking Electrolyte from Bigbattery Powerblock

    Not sure what you mean by create but I know there is sarcasm with your statement. Calling people trolls is not very good for your business. Most of what I have seen in this thread has been constructive criticism. Most important, your honesty is still in question until you report what you found...
  • Post in thread: EVE LF280 Charge/Cutoff Voltages

    And that's why I was implying to not make it complicated as others have. I also relayed to you what EVE told me. This discussion while good has been beat to death. There are numerous threads concerning it. Dzl has posted one of the threads discussing it and has cleared up what 300KGF means...
  • Post in thread: battery imbalance fix

    I have explained to you the Valance XP batteries are a different breed compared to a traditional drop in. I previously posted the link for you to ask your questions in your other thread...the Valance XP Super Thread. Why do you insist on starting new threads related to these batteries? You need...
  • Post in thread: EVE 280 Ah from Shenzen Basen are not "brand new" as advertised

    The poles do not look good and the dents are unacceptable. However as far as I know the gurgling noise is normal. All of my EVE 8 cells have that noise and it's been reported by many other members. The majority of us have received cells with the code B66. The date code is a mystery and EVE has...
  • Post in thread: CATL 271Ah cell issues.

    I would have filed a claim had it been me and I posted in Mightymachs' thread I was not recommending or suggesting anyone go past the dispute period. Personally I would have waited until a week or so before the time had run out to file a claim with the hopes Michael would resolve this mess...
  • Post in thread: Leaking Electrolyte from Bigbattery Powerblock

    Seriously? What about the strong smell Seth experienced? What about the red and white wires coming off apparently due to the corrosion in that area? What about the power button not functioning? What about the 7 volt reading on the display? Is this what you call a functional battery? How do...
  • Post in thread: LiFePo4 Charge drop after charging

    My 8 EVE cells were all over 3.50 volts after 2 days resting.
  • Post in thread: Deligreen 310Ah cells SCAM

    I wouldn't say they are bulged either. There is a big difference between bulged and expanded. Many of us have received cells that look similar and perform flawlessly. Some examples are in this thread. I do agree false advertising does not set well with me. However what it boils down to is cost...
  • Post in thread: Recommendations For Riden RD6018w Output Cables

    Yes there is less voltage drop with a bigger wire. My 6012 was able to happily and continuously pump the full 12 amps into the cells for the 4 days it took providing, as we found, the voltage was set to 3.65 volts to get the full current output. Dealing with these low voltages can be a PITA...
  • Post in thread: Can LiFePO4 Batteries Combust in Thermal Runaway Event?

    There is much to be learned from those that are not professionals. Sometimes peoples posts of hands on experiences are intriguing and much can be learned from them as well. And some who claim to be "industry professionals" have opinions with little to no data to back it up. And if they do have...
  • Post in thread: EVE 280Ah Lifepo4

    Thank you for your very enlightening and informative post...:) I had a feeling you would come along to make a comment since you had a bad experience with EVE when you were communicating with them. But it's all good and it's my time to waste. In fact my reply to you is taking as much of my time...
  • Post in thread: Can LiFePO4 Batteries Combust in Thermal Runaway Event?

    I don't think it is. We have been through this many times before and I believe it's leakage current at least with the EVE cells. But I also think there are certain scenarios that could cause problems and it's good to put insulation between the cells especially in a mobile environment. In the...
  • Post in thread: Would you trust or somehow test this eBay Daly BMS?

    Any BMS should be checked to make sure the HVD and LVD are working. Even the infamous Overkills, which I am using and love, should be tested before final assembly. Remember the BMS is used for the last line of defense to protect the cells in case a charger or something malfunctions.
  • Post in thread: Best way to compress cells in packs

    The whole idea in my opinion is to keep the cells from expanding. What you have is fine. If you notice the cells are not snug when you discharge them, then tighten up the rods so they are snug and be done with it. That's what I am going to do and I will most likely use the same method you did...
  • Post in thread: What if I don't use a BMS at all?

    A BMS...lol.
  • Post in thread: Leaking Electrolyte from Bigbattery Powerblock

    It's not that big of a deal providing the "young industry" does something about it. I know you would never minimize anything that would be harmful to another person. :) In all honesty I would like to see Big Battery and the likes succeed. I am sure you have seen the complaints about Big...
  • Post in thread: Happy New Year!

    I hear ya... Happy New Year Everyone! :)

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