I lowered the 1st and 2nd level default low voltage alarm in naza to 1st level 11.1 .6 2nd level 11.0 .6 With 2200 3S Phantom lipo i got around extra minute from 5:30 to 6:30 which was great with my gopro gimbal and prop guards. I checked voltage and it says I discharged 2200 phantom lipo down to 11.1v or 3.69-3.7 per cell which everyone says is acceptable cutoff. I tried another running battery and it discharged to 3.67 per cell or 11.03. But then I have seen a lot of posts where it says to follow 80% rule and not to put more than 80% back into battery. So when I charged the lipo back up - it actually put 2059 into battery which is more than 80% and is about 93%. I am getting discrepency between acceptable cell voltage 3.7v but then it seems to violates 80% rule. So this is not good for battery because I am putting more than 80% back into battery? And I should raise back the low voltage cutoffs? It was great having more air time but I don't want to ruin the (costly) battery.