Lipo at 2.6V?

When I last ran the truck (Thursday), I ended the day before the ESC shut it down. In fact, I have yet to fully discharge the batteries by running the truck. I'll usually run it for 20-30 minutes, break something, and charge the batteries while I do other things. Today, I started the truck on the batteries from Thursday's run, so they were not fresh.

Regarding the beeps, I didn't know that the ESC beeps for the numbers of cells... really good to know. I'll be listening from here on out.

Regarding the cycling, for these packs, what should I discharge them at? I have yet to discharge any batteries with my "charger".

The next time I buy batteries (very soon), I'm going to pick up one of these for a "quick assesment" before running:
http://www.hobbycity.com/hobbycity/s...idproduct=6589
or
http://www.hobbycity.com/hobbycity/s...idproduct=7704