Is my Flux Lipo cutoff working or not?

[lincpimp]

To add to what Texas said the cells listed capacity (mah) is often less than what they actually hold. If you discharge them below 3v per cell you could get more capacity out of them (nt advised!). I ran a neu 5s 5000 pack yesterday and it was with a quark esc that has a 3v per cell lvc. I put 4935mah back into the pack after it hit the lvc. So you should be fine. You can put the lvc up to 3.2v per cell, I like to run that, especially since you are running 2 packs in series, and you may have some cell variance between the 2 packs.