good mini review i think u nailed whats good and whats bad. I really dont like tho that they rate 3500 lumens and it peaks a few hundred below better be honest about the actual lumens flux, i guess the host is to weak to really push that much no ? I know my olight r50 gets really hot at highest so i can imagine a host similar in size with 1000 more lumens wouldnt last long really.
I’m not too bothered about the turbo output being below spec as you can’t see the difference between 3100 and 3500 lumen with your eyes.
I would imagine the host is okay, but the driver is limited to about 35 watts. High powered boost drivers are difficult and expensive to build compared to normal constant current or FET drivers.
There may still be some voltage loss in the driver spring. It’s a single spring and the battery tube is glued to the head. Once I get it open, I’ll bypass that spring and see if output increases.
It’s quite possible it was doing closer to 3500 lumen with their earlier metal tab design.
Lexel is working on his own boost drivers that are capable of serious output. He talks about the battery amp draws here.
The ODF30 seems to have good built in thermal control so when it gets too hot it will drop from 9A to 6.4A (2100 actual lumens?). I need to test it out, but haven’t yet.
My odf30 turbo mode stopped working… I am glad your working fine… don’t forget to update if your turbo mode stop working…
Do you think I should contact banggood for new tailswitch??
It’s very strange for only one brightness level to stop working.
Maybe your metal tab is bent down too much and it’s not pressing on the battery hard enough? Pry it up a few millimeters and see if that fixes turbo.
I will try around lunch time… it did go to turbo mode for one second and then back to high.
I rarely use turbo… maybe 32 seconds max… it stopped working yesterday. I even cleaned the contact with the rubbing alcohol.
Okay, going to Turbo for one second and then stepping down seems to be a very common issue when the battery is not squeezed hard enough. This happened to me after I tried to fit a protected battery in it. It also happened to some other people. What you need to do is bend the metal tab on the tail cap up. Then it will press on the battery harder and should resolve your problem.
What Jason said! Had it happen on mine as well.. and the tab was the culprit.
I did exactly what you guys tell me to do… bend the spring to make longer. Now my turbo mode is working…
Like i said, i have been using acebeam 26650 protected, thrunite 26650, and shockli…
Switching from longer cell to shorter cell will cause this problem… either way, my turbo mode is working now…
I wish they would use a double spring on both ends.
Here we go… i tested my lumintop odf30 with the shockli imr…
@30 seconds… 2835 lumens
Turbo step down after 30 seconds… 1827 lumen
I use the correction factor of .70… fenix tk15 1000 lumen light…
Wow… that’s much sooner than what was indicated in earlier reviews.
I think lumintop program that way so the light will not be overheat…
1800 lumen is still bright, but I wish turbo last 2 minutes…
Turbo should be way more than 30 seconds. A simple test is to bypass the tail cap and use some heavy wire to ground the battery to the battery tube. If this makes it run for way more than 30 seconds then your battery might not be compressed tightly enough.
My light is not even warm at 30 seconds. At 1 minute it’s getting pretty warm. At 1:30 it’s starting to get hot. I turned it down after 3 minutes. I think it gradually stepped down before 3 minutes as it was quite hot, but I didn’t notice it with my eyes.
I’ll cool it down and run the test again using the light meter to see if it steps down.
Okay, I tried again. My battery is not fully charged, but is still over 4 volts.
Start was 3000 lumen and held steady for 1m 10s then slowly dropped to 1870 at the 1m 45s mark. It stabilized shortly then went down to 1700 at 2m. Then dropped to 1680 at 2m 15s. It held steady for a while then dropped to 1600 at the 3m mark. I turned it off as it was really hot.
So I got full Turbo for 1m 10s, then I got a series of smooth ramp downs.
Locks review showed the light staying above 2600 lumen (my lumen number, not his) for about 3 minutes before steeply dropping in output. Mine drooped to that level in half the time.
His test says it was a 22°C room with no cooling.
Mine was a 23°C with no cooling except my 2 fingers holding the light.
My light was probably started off a bit warmer since it had just cooled down from another run on turbo about 10 mins earlier. Still, this is a pretty big difference in turbo stepdown times.
Do you think we get longer turbo runtime in colder climate??
Yes, Lumintop says this light has intelligent temperature control which means it probably goes up and down based on the internal temperature as opposed to a step down after a certain time.
If you blew cold air or ran it in an ice bath, I’m sure the turbo would last a lot longer. I have not tried to do this test, though.
ok 30 seconds stepdown is a joke too me… if the host is that weak or whatever reason then its just lame and misleading that it does the not even 3500 lumens for not even a minute… lumintop has a thing or two to learn from olight.
Lumintop if they read this should improve the light for newer batch… Because for this price they ask its not worth it imo.
JasonWW how about some video of outdoor beamshots?
Thrunite TC20 operates in turbo for 150 seconds. I guess it’s a better option than lumintop.
The turbo reaches 3,855 lumens. In high 1800 and it keeps practically all the time.
Did you stop reading at post #11?
If you look at post #15 I did a step down test and got 1 minute and 10 seconds before it slowly started ramping down. My light was already a bit hot, though. Reviewers like Lock got about 3 minutes before a big ramp down. You should read his review. He’s got all kinds of charts and graphs and pretty pictures.
Also, ChibiM did a review here. He has some nice outdoor video.
My only video camera is my Note 4 phone and the video is always too dark. I’m new to doing reviews, this is my first, so I’m lucky to pack as much info as I can here. 
The TC20 does not put out the rated turbo amount either. Newlumen has the same TA Lumen Tube I do and we both use the same 0.7 correction factor. It puts out the same turbo lumens as the ODF30 (I actually measured 3150 @ 30 secs). So if you like the turbo brightness of the TC20, then you will also like the turbo brightness of the ODF30 as they are the same regardless of who’s integrating sphere is measuring it.
About how long it runs in turbo is still a bit confusing to me. On Totobel’s TC20 thread some say 2.5 minutes and some say 3 minutes. Some even said 30 seconds, but I think that was due to the Thrunite protected battery.
My personal ODF30 started to ramp down at 1m and 10s and it wasn’t all that hot yet.
Locks ODF30 started to ramp down after about 2.5 minutes.
So I don’t know about actual turbo run time. This was never an issue to me as I don’t ever run turbo more than 15 to 30 seconds at a time anyway. If I need long run time at high outputs I have bigger lights to use.
On the High level Lock measured the ODF30 running about 20 minutes before stepping down due to heat. Lumintop rates it at 1800 lumen, I measure it at 1500 lumen. I think maybe this is pretty close to the TC20. I asked Newlumen to measure his TC20 on high using is TA tube with a .70 correction factor. I will report back what he measures. He says it’s 1550 lumen. So pretty much the same as the ODF30.
Overall, I’d say these 2 lights are pretty equally matched in overall performance on High and Turbo.