The driver of the DQG is actually one of the elements that really convinced me to get the light. It features a super efficient boost driver. A ramping UI would be nice, but I wouldn’t give up the efficiency of this driver for a PWM based ramping one.
As for output, I bet it can squeeze out alot more lumens with a higher output driver, but I actually really like that the high mode can be sustained without ramping down. Not many lights around these days that can sustain about 1000 lumens for over 1.5 hours of constant runtime.
Below is the chart that shows lumen output of XP-G2 vs 219C.
I had a closer look to the MCPCB and I think it is possible to modify it from serial to parallel connection by cutting and reconnecting traces. In this case you need a new driver which fits the special cell connector. I have this idea for quite a while and probably will design a FET+X driver when I find some time.
But there is still a problem if you want high output: the MCPCB is made from aluminium, not copper.
Received my DQG Tiny 26650 III today. Love how tiny it is.
Went out for a walk tonight with my son, and he noticed the buzzing sound coming from my DQG Tiny when I put it on Turbo. I put the flashlight closer to my ear, and sure enough the buzzing sound seems to be constantly there when on Turbo, but not when it was on High. Is this a defect?
Copper or aluminum base substrate don’t really make any significant difference up to 3A per LED. Being DTP or not that’s another thing. You can place a small order quantity for either aluminum or copper DTP 7-up board to Kerui. If I remember correctly the minimum order was something like USD 500, very affordable. Less than that then there’s a certain amount of tooling cost.
The driver in this light is pretty special, boosting from a single cell to supply 20V at 1A to the 7S emitter layout. Very little room in this light for modification, as per the norm in DQG lights.
Still very happy with my switch to a high CRI Cree COB, use it for lighting Macro shots regularly.
Yup, I modded one and didn’t see a DTP would boost the output to any appreciable value. Each XPG2 takes only 1A. Perhaps removing the thermal glue, bolting down the MCPCB, and use thinner TIM paste would give more outcome.
I rather worrying the switch button and it’s waterproofness. The rubber switch held down only by loose collar. Removing the switch was unexpectedly super easy.
This looks like a very nice light!
The only thing I’m not completely happy about is the mode spacing.
I would love to have a 1200LM setting.
Measured and spec, differ quite a bit. Do you have any idea the same values should be expected from every light from this series? Or can the measured outputs vary between two lights?
The specced high of 800LM isn’t bad, but the measured 946LM is a welcome surprise.
I really liked the light and added a pocket clip and tailcap magnet. The noise didn’t bother me, but I sold it because it didn’t fit well in my pockets and didn’t get much use.