I'm hoping the community can help me with mine...I'm in this same boat as here...yeah, like watching paint dry. ?
Got a Longwei CV/CC power supply, 4 @230A cells, arrived with all matching voltage at 3.290. I connected them parallel, made charging leads with 10awg and ring terminals as instructed, and started charging them at 3.4V. According to the 'manual' I could do this in steps. And frankly I was a little afraid of what might happen when I connected these two unknown entities (to me) together and started charging - unknown cells and unknown charger. That was three days ago. LOL After 3 days current slowed to a trickle, under 5A, and the cells aren't moving (up in voltage) - they're all still sitting at about 3.34V. Based on the current display on the power supply, and the length of time, I should have put more than 200 amps of energy into these cells.
Yesterday I could see they were going nowhere so I turned off the power and reset it to 3.5V and it took off again, now just over 9A. But after several hours it still had not moved the needle hardly any, they still all were sitting at 3.355 now. And current had slowed to about 7A.
This morning I thought I would see if I could at least get them all to 3.4V, so reset the power supply and started charging them again. Good current now, about 8A, but at noon they still had not budged, they're all sitting at 3.351. So I shut it down again to let them rest, thought I would try them at 3.6V tomorrow and see if I could get them to come up to full charge. After resting an hour they all match - they're all sitting at 3.343
Are my cells balanced? (enough?) Will they EVER get to 3.6 volts?
EDIT: I even tried setting the power supply voltage with my DMM, and while the adjustment is very sensitive, it's pretty accurate - at least to 50mA or so.