Level 1: 85 mA
Stage 2: 310 mA
Level 3: 590 mA
When emptied the battery, also the current reduced slightly so that at level 3 then flow eg only 400 mA.
Thus, if a full LiIon battery has 2200 mAh capacity, then at full luminosity is sometime between 3 and 4 hours final.
When operating the lamps only with AAA batteries, which have about 800 to 1000 mAh, up correspondingly faster.
For this, the lamp is very bright - I find it super!