I have my voltage settings set for 10.60 and 10.40 for the first and second alarms. Today, I got the second alarm and wanted to run the battery down until it landed. I was basically going up and down until it landed on it's own. I still had full power going up, but then, suddenly, it started descending quickly. Full power had no effect whatsoever and it landed a little hard. Now my question is this. Is that normal when the battery reaches the lower limit or do I have the alarm set so low that it just doesn't have the power to keep it in the air? FWIW, after I unhooked the battery, the voltage was 11.00, so the offset is .60, just like the default setting.That was kind of the point of running the battery until it landed, so I would know it was down to 10.40 volts under load.