TK75 vs BTU Shocker - Let the battle begin! (NEW UPDATE ON POST 125)

If perfect heat sink, XML U2 can have 900 led lumens with just 2.6A current. TK75 Turbo runtime of 75 minutes with 4*2600mAH shows that it is driven below 3A. If BTU is indeed driven to 3.8A per led but with similar output as TK75, it means it has heat sinking problem. And it is not good for the life of led if heat can’t be transfered fast enough to heat sink. BTU should at least reach temperature of 50c after in Turbo mode continuously for 10 minutes.

My stand is since BTU already don’t care much about led life and battery life, and go all the way out with 3.8A per led, it should not be flip flop situation when compare to TK75. It should blow away any TK75 anytime as it goes all the way out. TK75 is for general mass market, while BTU is most perfect for flashaholics who likes to do modding.

Besides heat that I suspect, can it be battery voltage sag under such high current?

I have been waiting for pictures of Dales monster thrower, How does it compare to the SAR?

Not even close, I prefer the TK75. I guess I'm limp wristed.

I am 74kg and I can bench press 75kg 10 times. Everyone should try this, bench press just over your own weight, to know are you really strong.

Cool dale. Thanks for the shots. Looks very good to me. I will do some more shots on mine later when my other lights show up. I’ll have to go out to test them anyway. I’m gonna have to find new test grounds though likely. The place I test these lights is about 1000m. With the coming TN31mb rated in the 1273m range - that spot won’t work. Heck I don’t even know if my brother can spot me that far away even with a reflector vest I wear. I’ll tell you guys, even the 600-900m we played with last night, that is a long distance. Walking back from those distances takes about 8-10min. I find it very impressive to know these lights that many of us own now can throw light that far. When you walk out that distance a few times it puts it in a deferent perspective.

Thanks for the test. Both lights look really good :slight_smile:

The AVERAGE person can bench 90% of their body weight, if you fall below the average perhaps it’s time to get to the gym!
Seriously though, why would anyone choose the BTU over the TK75? It’s seems to me the BTU hasn’t really lived up to its hype, anyone else feel that way?

Was there an optional driver for the BTU? Or is this it with the high power driver installed?

I give up on this conversation with you. You don’t like the BTU - fine, that’s your given right. I know its a good light and I’m the one who owns one. That’s all that matters. Done.

700m throw and 2880otf, great spill, nice fat spot - why do you feel it didn’t live up to its hype?

I wonder is it you have misunderstanding what is bench press.
Only 1% of people around me can bench press their weight, and only 3% of gym guys I have met can bench press their weight.
And maybe only 5% of people around me can bench press 90% of their weight.
I keep observed about this as I am kind of proud to be able to do that.

Cool down bro. It is just discussion. Fine with me if you think BTU is better. But I won’t keep quiet if I see something wrong about it.

The BTU. White target is 295m. Trees at the end on the side is 200m. The channel is about 15m wide. The BTU lights the entire field all the way to the target and then some by illuminating the trees easily on the side with its fat spot.

I'm sure the BTU is a fantastic light. I just don't like the style. I never liked the Fenix TK70 either. They both share (looks to share) the same ugly head.

I’m not upset. It’s just foolish statements that state a light driven at 3.8a x 3 LEDs, putting out 2880otf - “something is wrong with it”. That’s a foolish and incorrect statement. So nothing else I say will matter in this little tit for tat with you.
I own the BTU and prefer the BTU over the TK75. But I’m not foolish enough to claim its a better light than the TK75, or make a silly claim that the TK75 is weak and it only throws 600m. That’s because I know the TK75 is an excellent light. Both lights have their pluses and minuses. Both are great lights and very equal in what they give you for your dollar. And I fully respect and understand that most people here will likely prefer the TK75. Light weight, name brand, side clicky are great selling features. But anybody that thinks the BTU is bad, something wrong with it, whatever along these lines, are quite simply clueless on flashlights and what it takes to make them perform at the extremes these lights operate at.

Agreed. The BTU is kinda like a bulldog in my eyes. People either think they are ugly or so ugly they are adorable. The fat, squatty, hefty light appeals to me. Just like the SRK appeals to some and not to others.

Maybe it is your love for BTU have blinded you that you refuse to look at it objectively. I am just stating the fact driven at 3.8A per led, BTU output must not get below TK75. Else most probably it means problems below:
1.Heat sag
2.Battery voltage sag
3.BTU is not really U2, but T6

XML-2 U2 :smiley:

Ok, sure your right :slight_smile: