Here's some of the testing data I did with LR. The times will be different for everyone because we all vape differently. Some faster, some slower. But let me add that LR is very stressful on mod batteries and as a matter of fact I ruined 3 sets testing LRs on the Buzz Pro. They weren't intended to be used on HV mods. I personally won't use them.
5/21/2011
Black/flames Trustfire 3.7 volt batteries
dual coil cartomizer
Metered 1.55Ohm
Buzz Pro set at 4.46 volts
11:00 AM start
10:30 PM stop
8:00 AM start (5/22/2011)
10:45 AM dead batteries
Total = 14Hr.15min.
5/22/2011
AW IMR 16340 550mah RED batteries
3.7 volt 880mah
dual coil cartomizer
Metered 1.6Ohm
Buzz Pro set at 4.40 volts
12:00PM Start
9:00 PM Stop
11:30 AM Start (5/23/2011)
2:45PM Batteries dead
Total time 12hr.15min.
Ultrafire batteries (silver)
3.7 volt 880mah
dual coil clear cartomizer
Metered 1.5Ohm
Buzz Pro set at 4 volts
2:00 PM Start
12:00 AM Stop
8:00AM Start (5/25/2011)
Batteries Dead 10:45 AM
Total = 12hrs. 45min.
5/25/2011
Ultrafire batteries (silver)
3.7 volt 880mah
dual coil clear cartomizer
Metered 1.6 Ohm
Buzz Pro set at 3.7 to 3.9 volts
start 1:00 PM
needs batteries 8:30 PM
total time 7hrs. 30 min.
5/26/2011
Black/flames Trustfire 3.7 volt batteries
dual coil cartomizer
Metered 1.50 Ohm
Buzz Pro set at 4.55 volts
1:30 PM start
10.00 PM stop
start 9:00 AM (5/27/2011
11:00 AM Batteries need recharged
Total 10hrs. 30 min.
You can find these and more in this thread.
http://www.e-cigarette-forum.com/forum/notcigs/187979-buzz-pro-beta-test-results.html