Lck Led, Constant Current LED Driver Board - 3 Modes, 5.5-12V 3.0A.
Measurements at the led running off a power supply at 7.6volts input.
High 3 amps.
Med 1.45 amps.
Low .25 amps.
Used in this light.
Edit. Run time tests.
Edit two. Trustfire 26650’s used in run time tests.
At the start battery voltages were 4.1 volts with a ceiling bounce reading of 68.
20 minutes, ceiling bounce 65.6, temp 47C.
30 minutes, ceiling bounce 70.5, temp 55.2C. It would appear that the current from the driver was increasing slightly as the voltage in the batteries dropped.
45 minutes, ceiling bounce 65.2, temp59.5C.
60 minutes, ceiling bounce 63.6, temp 59.9C, maximum temp reached.
75 minutes, ceiling bounce 55.3, temp 57.2.
Shortly after this the light output dropped off dramatically. It still had 3 modes so I dont think it was low voltage protection kicking in. When the temp measurement was around 55C the light itself was to hot to hold. When the light had cooled down battery voltage was at 3.15 volts/cell.