No announcement yet.

Quiet1's SG build

  • Filter
  • Time
  • Show
Clear All
new posts

  • #16
    Battery Conditioning using the Capacitor Discharge Circuit

    Note: Occasionally I will get in a certain mood when I write. The words and ideas flow easily and the result can be quite - interesting. This happened while working up this post. It certainly isn’t the usual thing you will see here on the forum, but if it gives a chuckle, then why not. So with apologies in advance, please enjoy the latest episode of our Superhero Investigator:

    (As is common today, we begin with a brief flashback for context)

    Previously we watched our Superhero Investigator carefully study the battery charging characteristics from SG radiant mode spikes. His findings: Yes, batteries charge faster after repeated cycling from radiant spikes. At the end of that episode we were left with the question: Will this effect also show up with batteries charged from a capacitor discharge circuit?

    (After opening credits and music we return to the Investigator’s Lair…)

    For this test we note that the SG is in Generator (common ground) mode. The SG output is directed to the input of the capacitor discharge circuit. The cap discharge output goes to the charge battery. As before, the Arduino is wired to monitor the charge battery voltage. However, due to the large voltage swings from the capacitor discharges, the Arduino’s input filter was changed to include a much larger (2,000 uF larger) filter capacitor. Although we can’t see it directly, we the viewers somehow know that the Arduino’s software is the same as that used in the earlier battery conditioning tests.

    The Investigator double checks the connections, applies power, gives the wheel a spin, and … waits. As before, the Arduino charges the battery until the voltage stabilizes, turns power off, allows the battery to rest for 4 hours, discharges the battery to 12.5 volts, and concludes with another battery rest.

    (This is not exciting to watch.)

    As soon as convenient, the Investigator repeats the process for a total of 9 times. Each time the Arduino dutifully collects battery voltage data every 10 seconds and saves it to the SD card.

    At last the data is in. Only a little spreadsheet post processing is required. Soon we will know the answer to this auspicious inquiry…

    (The scene changes to the World’s Investigator Awards ceremony, held in a large auditorium. Esteemed and Learned men and women are seated on stage. Fellow investigators and fans fill the auditorium. The master of ceremonies is speaking.)

    “In the category of battery charging we have one nominee. It is my great honor to present to you the findings of ‘accelerated charging using a capacitor discharge circuit.’ The envelop, please.”

    (The audience is silent in anticipation. The MC opens the envelop.)

    “Contained herein is but one chart. I display it below for your viewing. From the charge lines on the left, we see clearly that yes, the charge times do indeed decrease with each cycle. This is truly an outstanding replication of the monumental conditioning effect in battery charging knowledge.”

    The crowd breaks into applause. The Esteemed and Learned men and women nod in approval.

    Then a lone voice from the rear of the auditorium is heard.

    “But look at the discharge times! They decrease also! What good is that?!”

    The auditorium is again silent as everyone reexamins the chart. Yes, the discharge times do indeed decrease each cycle, with each cycle maintaining approximately the same charge/discharge ratio.

    The crowd boos and yells insults. The Esteemed and Learned men and women are outraged.
    “What shoddy work!”
    “How could this have passed the peer review process?”
    “We gave up $300 in research funding for this?!”

    Our Superhero Investigator would be in grave physical danger if not for watching remotely on Zoom.

    “Oh dear, Where did I go wrong?” he wonders. “Could this be as simple as picking the wrong voltage limits? Or could Mother Nature be giving faster charging while taking away discharge time?”
    “I Must Think.”
    “I Must Investigate!”

    (scene fades to closing credits and music)


    • #17
      Battery Conditioning, continued

      I’m happy to report that I’m back to normal - whatever that may be these days.

      But the last post did prompt me to revisit the data from the battery conditioning testing done with radiant pulses only (standard mode, no cap dump). The graph below shows the same data set, but with the X axis expanded to show the discharge part of the cycles. As you may recall, the charge time decreased each cycle. But much to my surprise, the charge time to discharge time ratio remains constant. My interpretation is that the battery’s AHr capacity is decreasing with this “conditioning.” This is not the impression I got while reading Chapter 6 of the Intermediate Handbook.

      Back about 20 years ago when I was reading about Bedini technology, people were talking quite a lot about battery conditioning. At that time it took about a month of continuous cycling for the conditioning effects to appear. Also, it took about 1 month of resting for the effect to disappear rather than the 100 hours described in the Intermediate Handbook.

      So I have battery questions for the wise elders here.
      1) Is this temporary reduction in AHr capacity a normal thing?
      2) Is the quick conditioning (~4 cycles) currently described the same thing as the slow conditioning (~1 month) described years ago?
      3) What happens with continued cycling? Does the capacity go very low and then get larger again with negative energy?
      4) Are there any other relevant items to note about this?

      Many Thanks in advance!