Have you thought about possibly posting some photos of your build and how you carry it on your scooter? I think it's fascinating what you have accomplished and the care you have put forth to protect your cells without a BMS.
Thanks
Well the wooden boxes I have them in now is something I threw together and is off by as much as an eighth of an inch in places.
But once I make the second set I might take some pictures.
They will drift. Paralleling cells without current flow transfers almost no charge. Current flows when there's a voltage difference. When you parallel them, their voltages almost instantly equalize. There is an initial surge and then it drops to low milli or micro amps. If you do this for weeks, it can be meaningful, but doing it for 2.75 hr is just a placebo.
Once you series them and subject them to a charge/discharge, they will diverge again.
Actually, I think I figured out a secret about paralleling them. That was the second time I did this. And the last time it went pretty fast as well.
What I did was put them in order from least full to most full. This seems to change the voltages of the weaker to mosre and the ones with more to less a lot faster.
For example. the last time I charged them [in series by the way] it looked like this:
At 8 pm [after a 2 hour rest] it is the following.
November 3rd 2020
A 3.338
B 3.605
C 3.351
D 4.04
E 3.338
F 3.343
G 3.337
H 3.343
A to D 14.34
E to H 13.38
Total 27.73
At 9 pm I paralleled the cells in the following order
G, A, E, F, H, C, B, D.
At 11:48 pm all cells are at 3.349 volts.
VERY cool.
At 5:30 am each cell is 3.35 volts after 6 hours of resting.
So as you can see. They all pretty much changed. And even today after a few more hours they were still holding steady at 3.35 volts.
So I think that may be the secret to a fast parallel stabilization of the cells.
Once I sleep and get some rest I will test them again though to see if what you have said is correct.
However, even the last time I did this they remained equal UNTIL I started to charge them again.
But while discharging they remained all equal.
It was only when charging that they diverged.
So later I will see how it went. This is only the second time I tried to charge them to some sort of fullness.