Running Gens Ace 2s 5000mAh 40C with maybe 5-7 cycles through them.

I ran a test today using two chargers and the two batteries.

Settings used were balance charge, 5amps and 2s.

Sigma II EQ with battery 1 started at 3.84v and 3.85v vs.
Thunder AC6 with battery 2 started at 3.86v and 3.87v

Results

Sigma stopped after 102 mins and at 8.38v and shows 03168 on the bottom right of the LCD (mAh) - cell voltages are 4.20v and 4.19v

Thunder stopped after 121 mins and at 8.40v and shows 03298 on the bottom right of the LCD (mAh) - cell voltages are 4.20v and 4.19v

It appears that the Thunder is having a harder time determining if the charge is complete but at least it finished!

But 2 hours for a balance charge seems like a long time. I think at 60 mins both batteries were close to 4.20 but both chargers kept going on trickle I guess. Someone on another one of the forums I visit proposed just skipping the balance charge and just use the regular charge but monitor voltage. Maybe that's my issue, I balance charge and most people don't?