I tested amp draws using a Liitokala 26650 cyan.
At 4v, turbo to eco:
9.0
3.84
1.0
0.214
0.015
At 3.6v:
10 for a few seconds then steps down to 6.4
4.6
1.26
0.250
0.025
It’s important to make sure the battery tabs are compressing on the cell. I tried to fit a protected KeepPower, but it didn’t fit and it compressed the tail cap tab. This tab does not spring back very much at all. After putting the shorter unprotected Liitokala back in turbo would step down after 1 second. I had to bend the tab on the tail cap back up to apply better pressure on the battery. Then it worked normally.
Lumintop sells a protected 26650 that fits it, but I think it’s quite short at 68.5mm. Most protected 26650 are longer than that.
Also, early versions of the light had the metal tab design on the driver, but later versions have a single metal spring . The tail cap PCB still has the metal tab design.
I posted a mini review with pics and lumen measurements here if anyone is interested. Short Review of Lumintop ODF30