Here is my first impression of gxb172 with my XHP50B J4 led in Convoy S2+ host and lg hg2 battery.
Some photo of flashlight in use.
Beam on wall:
Low mode:
Outdoor with clear air no fog, on turbo (light is extremely bright) - now 5A setting
First observation:
- Flashlight is extremely bright! I am now using default mode at 5A maximum, I will adjust for 5.5A later on with X1 X2 jumper and measure current. Single flashlight is enough to light up entire room!! I have never seen such small flashlight to be so bright.
- Lowest mode is quite dim (good), useful during night time without be too bright for night-vision
- I notice flashlight has very-very short bright flash during turn on, but only during dim modes, likely not problem
- Flashlight get hot extremely quickly! It seems thermal control works well, and automatically dim light about after a minute, however, thermal control will also increase brightness (all the way to maximum!) if you cool flashlight (such as when put in cold tap water!!)
- Although front get very hot, flashlight body is still ok to hold.
- I did not notice thermal 'turn off' or any high frequeny sound as report by schizobovine. Moderator007, did you notice high frequency sound? The flashlight is silent at all modes.
- XHP50B beam is nice in the middle but slight yellow/green around center hot spot
- Mode memory is simple and work
I have not encounter any flashing error code yet. I hope to do more simple test soon, such as with low battery.
Now I understand schizobovine using XHP70, feeling motivate to turn up current and change to XHP70 for more light!!