OK its no secret the driver used is the Taskled H6flex
from http://www.taskled.com
the data sheet with all the configuration instructions is on there
it does involve lots of button presses and is easy to screw up .
messing with it will also mean possible warranty issues from the settings I send them out configured to .
mainly the thermal monitoring , switch that off at your own risk
dont confuse battery draw with led drive current .
when on the highest setting it will draw approx 2 amps from a 14.8 volt battery
I send them all out configured to 2.8 max led current as it is not possible to see the difference at 3 amps
and the battery drain is a bit better
the led drive on the 5 levels is
level 5 2800 ma
level 4 1593 ma
level 3 730 ma
level 2 220 ma
level 1 50 ma
now this doesn’t mean the lumens halve with each step as that not how leds work
and I will get realtime lumen counts for each level sometime soon .
battery draw at the five levels is
level 5 1.9 amps
level 4 1 amp
level 3 .5 amps
level 2 .15 amps
level 1 .04 amps
so with this information you will be able to work out the theoretical run time for your particular amp hour battery
real runtime will vary due to temperature the colder the less runtime you can expect