Well, heck. Your graph you posted shows I’m right. It shows peak voltage at 8.4. And it shows the amps at 3.5a per emitter.
I love my BTU. Wouldnt trade it. I see a few areas where there could be a bit of improvement. To be honest there are no perfect lights. Lest we would all only own one. I will say this. My BTU with the XML 2 U2 with the driver boosted a bit. Is a world of difference from the CW’s it came with. I like to poke fun a the TK75 users. But the TK is a excellent light as well… Now the technical aspects I leave to you fine people.
That reviewer made a very big mistake not taking battery voltage sag into his calculation.
He measure tail cap current of 4.9A, and he assume voltage of 8.4V, and get a 41.16Watt. This is completely not true as it won’t be 8.4V.
Since he made such a mistake, I doubt his measurement of 4.9A either as high current measurement is not as simple as it looks.
When it comes to wattage measurement, you better believe in power supply that has +/-sense connection. Wattage measurement using batteries has too much variable in it depending on your batteries condition and cables.
That is volt-current graph of whole torch. Not the led alone. No one can put 8.4V between led and not burning it.
I don’t know what goes to the emitter on the TK nor do you. And I don’t know what goes to the emitter iphone the BTU. I just know you don’t get 975otf with a XML U2 driven under 3a. Find me ANY example of this - I dare you.
I tell you what. Lets just call a truce on this thing. Your not going to convince me that the TK75 is driven less than 3A. And I’m not going to convince you it is driven a minimum of 3.5A. You like the TK75. I like the BTU and the TK75.
So lets give this little tit for tat up. Deal :quest: :quest: :quest:
TK75, if your 975otf is real.
Why so insist until spreading wrong information about TK75, of course mostly it is that reviewer misled you. It can jeopardize TK75 if others think that it is driven to 3.5-3.8A per led. Not everyone like such configuration as it will harm LED. Of course, some people here would love to see Fenix drive TK75 harder.
No, I won’t make a deal with you as it is not right. For god sake, I just taught you how to read volt-current graph without trashing your many years of experience testing flashlight. Wake up!
I can promise you if anything, this thread has helped TK75 sales. I wouldn’t want one only driven at 3A. I would actually prefer 4.2A.
And NO mis-information was put out by me on the TK75. I get my data scientifically. No guess work.
Anyway, read my previous. Lets stop this crap. It’s not helping either the BTU, the TK75, You, or me.
We are at an impasse. Truce?
I LOVE YOU GUYS!!!
Well one thing we can agree on is the TK75 will hold its sale value a lot better than the BTU Shocker.
This is my last statement on this thread. Period.
You are wrong. You proved yourself wrong on your previous graph. The TK75 is driven at 3.5a at minimum. The lumens prove it even more so.
You keep bickering with yourself. I’m done.
I think Jesus has a TK75…I’ll ask him.
wellllll…i asked…. and his response was” “I’M not tellin’” 0:)
I am done either. Else things get out of hand when getting emotional.
Thanks to your testing and reporting here. As I’ve said before, not many are willing to test and report.
I am with you Dale! I don’t even really understand the graph. All I know is I love my TK75 and like you wouldn’t trade it for anything. On the other hand I think rdr’s BTU is also an awesome light and do not understand people saying it is not living up to the hype. What kind of numbers does this light have to put out before it wins the respect of the community. Those who own it know it is a hard performing beast but yet a lot still think it is an under achiever. I think both lights are great. It really doesn’t mean anything to me which light is considered better. In our tests the TK75 won one contest ( lumens ) and the BTU won the other ( throw ). I would say that it is a draw!
Sorry guys . Not trying to drag this on. I am a slow typer. Ya’ll posted 10 posts while I was typing it out. Lol.
One more test to go for the final battle. SC600 vs TF50 style. Ha.
Sorry but we don’t own either one of those. I do have the small sun zy-t29 which is a far more budget offering along those lines and I doubt would compete with either.
yes ,the DRY DRIVER should help put more out of the big mouthed BTU
I ordered it more then a week ago and it hasnt been shipped yet! CN quality goods customer service is terrible these days
Someone read it on the internet. It must be true. 