The BLF GT70 "Giggle Monster" is here! 7,500lumens, 1,500m throw! Group buy Closed!

lol, Love the picture. I had a setup like that back when I was modding them…Then I sold most of them.

Maybe I should order a new LED/MCPCB to slice off the dome haha. Thanks guys. Loving it so far. This is so ridiculously large and heavy that I’m forced to use an air cushioned shoulder strap from a Nanuk case. The one that it came with is awful lol. Btw, it fits perfectly in a HF Apache 3800 hardcase with room for extra battery carriers and other small lights. $32 with a coupon.

These are not available seperately, only in a conversion kit. The leds are common, but the mcpcb is unique.

That gives me an idea what to expect, thanks TA!!

If you add up 8 x 30Q you get 6 amp hours at “12v”. On turbo it draws about 7A to 8A. If it could sustain 8A then you’d get 45 minutes of run time, but it can’t sustain that due to heat as well as voltage drop. As the voltage drops your amperage drops which extends the run time. So I think turbo would be at least an hour, not counting the cool down periods. This is just an estimation. I’m not sure when the LVP would kick in and force it to run at a lower level which would then extend run times further.

In the original GT it could be set to the 2A level and give about 2H 50 minutes with 8 x 30Q until lvp kicks in, but it would be drawing less than 2A near the end due to low voltage.

Wouldn’t mind seeing some side by side comparisons from some of you who have the GT and gt70. Beam profile etc.

Well i got my gt yesterday and it is awesome, a lot brighter than the first gt.I just wish it had a tighter beam.

I think I’ll order a conversion kit then. Thank you.

…I was beginning to think there was something wrong with my brand-spanking new Miboxer 8 until I figured this out LOL :slight_smile:

Thanks so much for the 30Q specific information.

Yeah I can’t see having the light on at full brightness for more than minutes at a time so this light can easily last me through my outings (multiple ones even) and just charge the batteries when I get home.

Thanks again.

I don’t know about that haha. I took my OG GT out camping with my buddy and we went out to the water at 2am and must have had that thing on turbo for an hour straight. That’s the first time I ever noticed it getting slightly warm to the touch and hearing the joints tink and pop lol. It was slightly hazy out and the effect on the water, trees, and clouds was just amazing.

About what?

Sorry I meant to quote this specifically

I never received a tracking number but my GT70 arrived today (OR, USA). Charging up the cells now!

My BLF GT70 (NW) arrived this afternoon.

Thank you! -> Texas_Ace

That actually was why I got this light, to use it on a boat. Right now I don’t have a salt water boat (hope I will soon) and I really don’t need to use this light for long periods on the lakes and river (night fishing) I go to but I totally can see extended use of the light at max brightness on the ocean mermaid hunting! :slight_smile:

I have a technical question about output once exiting turbo mode with a push & hold, but don’t have a way to measure output (accurately).
Maybe someone knows the settings in Narsil or has measured this already?

I noticed a push & hold, to come down out of turbo, jumps to a level noticeably lower then the top of the ramp.
TA shared that top of ramp is 50-60% output, so I’m guessing maybe 40-50% output. Does anyone know actual output % or current at this level out of turbo?

So to replicate: while in turbo, push & hold to come down from turbo. The first level jumped to is the level I am curious about.
A fast push & hold from here will bring you back up to the top of the ramp.
It is nice to have 2 hard stop locations in the ramp like this.

Also, does 2 E-switch led flashes still indicate the FET is starting to be used for output?

A big thanks to everyone involved in this project. A great light and fast GB! :+1:

Got text, light due to arrive tomorrow… WOHO!!
Hope I can get it before I leave for the mountains at noon… :sunglasses:

Yes, that is how it is supposed to work, it is a limitation of the NarsilM firmware at this time.

The top of the ramp is around 50-60% as you said (forgot exactly what I settled on). When you ramp down out of turbo it jumps down to the top of the ramp.

If you really want a 100% ramp you can re-flash the MCU to allow this.

Yes, I do believe that the 2 e-switch flashes are when the FET engages. Although, it really does not matter that much and come to think of it, I don’t remember if I updated that setting for the new ramp. So it might be off by a fraction of a second worth of ramp.

There’s no way to access 80? I thought someone said we can go to turbo and ramp down to get to the levels between 60–100%.