Vlad1 said his was at 3.09 volts.
For sure better to error setting battery cutoff higher...not lower.
The 3.09V is the "sag" voltage limit when under load (firimg). The 3.6V figure is battery at rest. Using sag voltage is a more accurate way to figure out when a battery is discharged. You should be OK to use the standard 3.09V under load sag voltage cutoff for your lipo.
As retird said, your best bet is to run the battery analyzer and case analyzer on the mod (it's a safe bet Vapecige didn't bother). If you are reluctant to do that, make sure the Watt hour figure for the battery is accurate (I explained how to go about doing that in my so far one and only blog entry lol). Use the actual figure for the mAh capacity of the pack.
From there, you can keep an eye on the at rest and loaded cell voltages using escribe as the pack discharges. Consensus seems to be around 3.6V at rest is time to charge the battery (but I'm not a lipo expert).