Convoy L6... XHP70 Beast!

That is about the most a xhp70 can handle.

The xhp70.2 can handle 18 to 22 amps.

Sweet! It’s really a good one.

  • Low – 50mA
  • Med – 200mA
  • High – 1700mA
  • Turbo – 5000mA

Based on the the L6 info above, for a set of 5200mAh batteries, would my run times be in the ballpark below?

Low=100 hrs

Med=25 hrs

High=3 hrs

Turbo=1 hr

I would say that looks very accurate on the runtimes more or less.

Theoretically, yes.

Realistically run times will be longer as the light will quit pulling those listed current draws as the cell dies which will put the run time on a curve in the end.

I’ve wondered for a long time about absolute run time even on a constant current driver, because as the cell dies the driver will pull on it harder to maintain the set current and make the cell die even faster, so the tail amp draw goes up as the cell’s voltage goes down, would a 5000mAh cell deliver one hour of run time at 5A constant current? Don’t know that I’ve seen anyone chart that kind of driver out for provenance. (they probably have, I just don’t remember)

I haven't been game enough yet to just leave my L6 on in different modes to test how long it really runs.

I ran my L6 on the highest setting for over a half hour sitting on my bench with no cooling. It was pretty warm but still easy to hold and it didnt step down. I had done the spring bypass but no mod otherwise.

I have also tryied run mine on highest for a long time, yes it gets warm but no way near that hot as the emisar d4 for example gets and its impossible hold without almost burning, but ofc i would never leave the light on highest unattended and go away. I was kinda scared before i got mine how people said here it quickly gets hot, thats not true at all the head is quite big and manages the heat very good if uask me and having it on for a long time doesnt feel like its an issue with heat really.

You were probably reading about the highly modded L6’s. Simon has run tests of letting the stock light run on turbo for an hour with no air circulation. It gets really hot, about 60° C IIRC, but levels out then starts to run cooler as the batteries drain.

On my light doing 17A, it’s a different situation. It would burn you after 2 minutes. I dont even let it get that hot. Maybe 30 seconds on turbo at most (with fresh batteries).

The stock light is not bad at all.

actually it said on gearbest specs where i bought it from that it can reach 80-90c on highest if left for too long i guess a silly typo?… but yea ok modded i can understand its a different story JasonWW.

It might have been 80° to 90°. It’s been a long time since I read this. It was hot enough to burn you. But it’s also a worse case scenario, because the act of holding it wicks away some heat and any type of air current also helps to keep the temperature under control.

Ps, I’m a °F user, not a °C user, so it’s hard for me to relate to Celsius numbers. :disappointed:

Yeah i understand JasonWW no problem :smiley:

Just got an L6. I think I like the Q8 a little bit more but it does seem to be less able to maintain max output than the L6.

well the l6 has a bigger heatsink and head so that shouldnt be a suprise, also a lot more compact, they both are great lights tho but yeah it would be ideal if the q8 could handle heat like the l6…. lumens and heat isnt easy to solve.

It’s two different power levels. The stock L6 is about 3,800 lumen and the Q8 is 5k+ lumen. So about 40w to 60w. That’s 50% more heat on the Q8.

I see. That’s probably why I was a bit more wowed with the q8.

The xhp70 in the L6 is pretty much 4 xpl emitters crammed together. So both lights are capable of similar output. The Q8 has a FET driver which pushes them hard. The L6 has a linear or constant current driver and doesn’t push the emitter as hard.

Now if you swapped in a FET driver to the L6, it would be putting out about the same 5,500 lumen as the Q8.

So they are actually quite similar. One is just a 4 x 18650 light and the other is a 2 x 26650 light.

If you swap the Q8 over to xpl2 emitters you’d get about 8,500 lumen. Same thing with the L6. Swap in a xhp70.2 along with the FET driver and you get about 8,500 lumen.

I hope this gives you a better understanding of the two lights.

How would sanding the base of the OP reflector affect throw? I’m wondering how much there would be to gain by focusing it like is done with the SMO reflector. Has anyone tried this yet?

Thanks for the excellent explanation.

All I know is if I put in charged batts and push the switch, light goes out one end. :slight_smile:

The difference will only be seen with a lux meter. You won’t see it with your eye.

Here is my SMO reflector with the stock spacer and then with the spacer removed, the bottom taped up to prevent shorts and the reflector lowered a tiny bit. It basically makes the corona smaller. The light from the corona goes into the hot spot.

Your much better off doing the resistor mod or swapping to a SMO reflector. Those are changes that you will actually see a difference with your eye.