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After almost 4 days top balancing and only achieving about 3.38V/cell, I ended up building the cells into 4S config with BMS and charged for half-day at 14V/10A - this got me to about 3.6V/cell. I put back into parallel and top balanced the rest of the way. Cells were within about 2mV of each...

I was having very similar issues as the original post. I received my 4 cells at about 3.29V each and after 4 days charging in parallel, was only able to achieve about 3.34V using a regulated power supply. I even bumped the voltage up to 3.7 to get is closer to 5-6A output. I finally built the...