My DN70 should be here today so as long as the weather isn’t rubbish I should get out to play with it tonight.
Problem is those batteries take a while to charge so if it comes with a depleted battery I wont be going anywhere tonight.
Thanks for the link! I had to use Google Chrome to translate! :person_facepalming:
After reading the review by RS.Freak, it appears that the DT70 is really a good flashlight besides the real lumen output advertised by the manufacturer! The run times he stated were a surprise to me as well! 
Hopefully someone else can chime in that has purchased one! My intentions were not to criticize anyone here, but rather point out my past experiences with Chinese products! Perhaps this DT70 is a really nice flashlight! I will wait and see if anyone else that has purchased one will give their inputs on this flashlight!
I also wanted to add that looking at that German forum, the 18650 batteries (rated at 3000mAh) appear to be running in parallel for this DT70? If that is the case, then can somebody explain to me how you can achieve over 8,000 lumens from (4) XHP70’s that will run for 3-4 hours in cold weather? I’m having a hard time configuring this out! :person_facepalming:
BoxCarWillie: I think it says they’re running 2S2P. I’m not sure because google translation is not good. Further, it’d need an astonishing booster to get that output if running in parallel…
I’m sure they are measuring it like Olight does, it will do 8,000 lumen for a certain time, like 1, 2, maybe 3 minutes, then step down in power and continue for the other 3 or 4 hours. It won’t/can’t maintain 8000 lumen for 3 or 4 hours.
That’s what I’d be hoping as well. Though you’d expect the guys on the other forum would have expected that and accounted for it.
So both the German guy and Imalent are liars! :rage:
The ANSI FL-1 standard is the problem here, it’s complete bullcrap and allow manufacturers to make outlandish/misleading claims.
This standard needs to die.
Let’s do the math. For a single XHP70 to run at 2,000 lumen it would need about 2.25 amps. Multiply times 4 to get 8,000 lumen and you need 9 amps. Let’s say we used the best quality batteries currently availabe, 4 3500mah sized 18650’s. They could only pull 9 amps for around 1 hour or so maybe.
To get 3 hours of 8,000 lumen output you’d need 12 batteries, maybe more, plus fans to blow constantly across the light to keep it cool. So yeah, I guess they lied.
A similar light is the Olight X7 which uses 3 xhp70 and 4 18650 (3500mah) batteries and can output 9,000 lumens. It can do 9000 lumen for 2.5 minutes then drops down to 1800 lumen for another 200 minutes.
If you start it in 5500 lumen mode it will go 8 minutes, then step down to 1800 lumen for 215 minutes.
If you start it in 3000 lumen mode it will go 32 minutes, then step down to 1800 lumen for 200 minutes.
If you start it in 1000 lumen mode it will maintain that for 6.5 hours.
So you can’t defy physics. No light currently made can maintain 8,000 lumen for 3 hours off of 4 18650 batteries. It’s not possible.
DN70 arrived…
It’s tiny
It’s bright
It’s … .er…. rather “cheap” when you look at the walls etc but it bloody works.
I’m sure it will survive being thrown around a fair bit but it is so small and lightweight it seems a bit cheap.
I’d still buy another… oh… I have already 
Can you do a single button press and get 3800 lumen or only 2500 lumen?
all 4 please
Right hand button cycles to 2500, left hand gets me 3800. tap on left button and instant blindness, hold it down for a couple of seconds and it locks onto silly bright mode
Plus you have to remember that it is a 6V emitter so the driver has to run at least 2s2p config to work. So best case scenario would be around 6000mah max under load. Remember most high amperage cells are not high drain and will lose capacity in this situation.
That won’t effect run time. Run time is the main point.
Yea maybe they are thinking its 4 cells light so you count them all? When really you only count the amperage from 2 cells.
I don’t understand. So if you click the right button you have to cycle from low modes up to 2500 lumen?
What I want is one press to turn on at 3800 like I do with my Convoy L6. Is that possible?
Yeah. What wasn’t clear about that?
Right button, press one = 20, press 2 = 300, press 3 = 2500, press 4 = 20. Long press = off.
Left button 1 sec = instant on. 3 secs = permenant on.
In any of the right hand button modes a quick press of left button shows battery voltage, longer press goes to 3800
A couple things, but no big deal. You explained it here.
So your saying it does NOT go from off to 3800 lumen or off to 2500 lumen? That’s a shame, I won’t be able to use it.
No. I’m not saying that at all.
Have a look here
You press the right button to change power modes, 20/300/2500. You long press to turn it off. You turn it back on wherever it left off from. Turn it off at 300, it’ll turn back on at 300. Turn it off at 2500, it’ll turn on at 2500.
hold down the left button for a few seconds and it’ll come on at 3800.
Also, I need a mount for my phone for videos. I couldn’t be bothered to grab the 7D and tripod for a quick video so I apologize about the focus and the issues with brightness.
If I can answer any questions, ping them and I’ll try and answer them.
One thing, the buttons are blooming awkward when it’s dark out. I tested it in a pitch black room and found myself prodding the rubber charging cover to try and turn it on,