Recent content by Wolf


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  1. Wolf

    Wolf's PowIRwall

    That is my opinion also. We are going to have some variance in pack voltage that is a given. As is the case with Battery 1 it just so happens that the pack difference runs between 30mv to100mv at cutoff V. But it repeats consistently within that window. So I believe the early warning signs of a...
  2. Wolf

    Wolf's PowIRwall

    @OffGridInTheCity No not really I haven't touched any balancing feature on the Batrium in a long time, even through the winter. The batteries are in parallel so battery voltages are going to remain the same. The pack voltages will vary a bit as the discharge happen for me on battery 1 and that...
  3. Wolf

    Wolf's PowIRwall

    @100kwh-hunter Of course I remember you how could I forget. With Battery 1@185.87Ah, 2@207.73Ah, 3@209.34Ah, and 4@206.84Ah would be a total of 809.78Ah if I calculate from 4.2V to 3V. But running at 4.05V to 3.5V or from 56.7 to 49V I think I may have usable about 600Ah to 650Ah. Quite enough...
  4. Wolf

    Wolf's PowIRwall

    Agreed! I am in the process of verifying the Manufacturer and part number of each cell in the Frankenstein packs maybe there is a correlation there. Fortunately I have all the data so I can analyze it. On another note I hit the all green on charge today and as you can see pack voltages are...
  5. Wolf

    oke cable losses

    The solution is higher voltage which in turn reduces the amperage and V drop If you would normally run, as an example, 200V at 30amps which would require 6mm2. If your panels can take it go to 400V and you could still use 6mm2 wire but since you are reducing to 15 Amps you could technically get...
  6. Wolf

    Wolf's PowIRwall

    I figured as much (y) Tech savvy as you are. Well that's a good question. The only sense of capacity I have is from the original pack tests which we all do from ≈4.2V to ≈ 3.0V That gives us the actual full cycle capacity. I enter that data into Batrium and through some magic that I haven't...
  7. Wolf

    Wolf's PowIRwall

    Thank you! This can all be yours too if you want. Its running on just an old IBM Think Pad with a SSD drive. Wow I just checked and its got a 6th gen i7 didn't know that. It was a throwaway at office 3 years ago and I figured run Linux on it. Just need node-red, influx and grafana The code is...
  8. Wolf

    Wolf's PowIRwall

    It is 8:00 Am and charging is commencing As you can see Battery 1 is the only one that has this greater difference of 80mv to 90mv at around 3.55V to 3.65V. Batteries 2, 3, and 4 are all running a cool 10mv to 30mv difference at all charge levels. Once Battery number 1 gets above 3.7V it...
  9. Wolf

    Wolf's PowIRwall

    Well as promised the results so far. We had a great morning but after about 10:30 the weather turned sour. Heavy clouds the white fluffy kind just made for shading and then a quick rain shower. So I was not able to do a full charge. Maybe tomorrow supposed to be mostly sunny. Nevertheless...
  10. Wolf

    OffGridInTheCity Build

    Sucker 🤭 I got the same alert and was contemplating it. They are among my favorite cells. Perfect for Powerwalls Best of luck. Wolf
  11. Wolf

    The Passion of the Li-Ion 18650

    Well according to @Generic he got reasonable results way into the 1500+cycles(on well manufactured cells) and that was I believe an OPUS charging to 4.2 and discharging to 2.8. Don't recall the amps but nevertheless FULL cycles. So if our PWs are not even scratching full cycles and at very low...
  12. Wolf

    Wolf's PowIRwall

    It is neve wracking to a degree but since I made all the mistakes on the first 3 batteries the fourth one was not so bad. Just waited till the Voltages were close enough and since all 4 batteries are in parallel well you know water seeks its own level. Since the only battery that is somewhat...
  13. Wolf

    OffGridInTheCity Build

    Inspiration for us all. Great job looks awesome! Wolf
  14. Wolf

    Wolf's PowIRwall

    Alright, due to the weather being cloudy yesterday and the A/C was running, my main batteries (1, 2, and 3) where well on their way to my pack low limit of 3.48V. They just passed down to 3.56V and the just installed battery was sitting at 3.49V per pack a difference of 0.07V so I decided to hit...
  15. Wolf

    Wolf's PowIRwall

    Well never say never..... As I have a small home and my heat, hot water, cooking, and dryer are all propane. On a nice day without A/C running I am fully charged by noon. Let's see how much longer it will take with this battery added to the whole. So far propane has been affordable with my last...
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