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

[JasonWW]

@the4ds9

I use and recommend 30A-40A 18650 3120mAh BUTTON Top Battery High Drain Rechargeable Orbtronic, and also 3000mAh 18650 Battery 20A-35A Li-ion 3.7V Button Top Rechargeable High Drain H-IMR - Orbtronic

I have eight of each and they power up my Lumintop BLF GT70 CW and NW to the max. Looks like 7500 lumens on Turbo to me. Awesome product (batteries) and super fast shipping from Sal.

:+1:

What cell is under the wrapper?

The 3120mah sounds like a Sony VTC6? Remember that even though the wrapper says 30A continous, it’s really not.

I would stick to oem cells and avoid rewraps unless you know for sure what cell is under the wrapper.

[Newlumen]

Use samsung 30q button top and call it a day…

[JasonWW]

@td1042k

You can pick up a couple of power banks for your cell phone and pull the batteries from that. You might need to do some research on what power banks have what cells.

I would not recommend that at all. :confounded:

[Lothar]

@atbglenn

After owning my GT70 for several weeks now, I’m still giggling. I love this thing!

I can vouch for that too. And I giggle even more when I keep it behind my back while friends are playing with my smaller throwers, like Jacobs A60, and then getting comments like “Holy $hit / F%@#” when I reveal the BLF GT70. I just can’t stop smiling, and that is what a hobby should do!

Thanks so much to the entire Project Giggles Team!

@the4ds9

Comparing the NW and CW, definitely GT70’s Neutral White has good color rendition. The Cool White dulls out dark colors like green and brown of trees. I did not find the NW of Acebeam’s K65 to be good at all. This means the Neutral White of the Lumintop BLF GT70 is truly high quality. A very good 5500K. Lumintop BLF GT70 NW all the way! :+1:

Thanks for that. Do you plan on dedoming the CW?

[ZozzV6]

@Texas_Ace

The flat black is a hard LED to use due to the grounded thermal pad, you have to use a special driver for such an LED and it was not worth the hassle for most.

The new LED has a neutral ground pad so it can be used like any other 3535 LED. Making it a drop in replacement if you can find a good model.

White flat is not as easy as it seems.
That led is really picky about reflector imperfections. Even GT mini and Convoy L2 and Emisar D1 reflector was not perfect enough to find the perfect focus. It is really hard to get that tight hot spot with it because with an XP-L HI you have 4 times the emitting surface and if the reflector curve a little out of perfect you still see full yellowness of led from a distance. But not with White flat. If the bottom curve does not match perfect you ger hollow beam like this GT mini from 1m:

Or a strange beam that converges and diverges. like in this Emisar D1:

Also need to find somewhere 3030 centering rings or produce with some company or mod the XP ones because the white flat is smaller.

[square74]

Hello,
white flat sounds great.
Are there also NW tint availlable?
The black flats I´ve seen working are all so blue / CW.
Thanks.

[ZozzV6]

@square74

Hello,
white flat sounds great.
Are there also NW tint availlable?
The black flats I´ve seen working are all so blue / CW.
Thanks.

No. Just cool white.

[square74]

Thanks,
so no option for me…

[Texas_Ace]

@lmcmann

What’s the max current draw off the batteries? Do I need 30A cells? I don’t care which ones I order. I just want the light to perform as well as it can. Sorry if this is answered somewhere, I looked around and didn’t see it. 30Qs are 15A. For a couple of dollars, I can get VTC5A or D.

Anyone have any opinions?

The max draw is not very high in this light so most cells will work fine. Although high drain cells like the 30Q and VTC series will give you a bit more lumens.

[Texas_Ace]

@ZozzV6

@Texas_Ace

The flat black is a hard LED to use due to the grounded thermal pad, you have to use a special driver for such an LED and it was not worth the hassle for most.

The new LED has a neutral ground pad so it can be used like any other 3535 LED. Making it a drop in replacement if you can find a good model.

White flat is not as easy as it seems.
That led is really picky about reflector imperfections. Even GT mini and Convoy L2 and Emisar D1 reflector was not perfect enough to find the perfect focus. It is really hard to get that tight hot spot with it because with an XP-L HI you have 4 times the emitting surface and if the reflector curve a little out of perfect you still see full yellowness of led from a distance. But not with White flat. If the bottom curve does not match perfect you ger hollow beam like this GT mini from 1m:

Interesting but makes sense.

The Mini-GT beam actually looks pretty focused to me, a perfectly focused reflector should actually have a dark spot in the middle, the only reason they don’t is that they purposely de-focus it some to get rid of it.

Does the dark spot disappear at range?

[Texas_Ace]

@square74

Hello,
white flat sounds great.
Are there also NW tint availlable?
The black flats I´ve seen working are all so blue / CW.
Thanks.

Sadly no NW tints, which is another reason I never bothered with the flat black.

The flat white being a drop in replacement makes it worth considering since it can be an optional LED in a 3535 based light.

[ZozzV6]

@Texas_Ace

The Mini-GT beam actually looks pretty focused to me, a perfectly focused reflector should actually have a dark spot in the middle, the only reason they don’t is that they purposely de-focus it some to get rid of it.

Does the dark spot disappear at range?

It does but with this method they scatter some light out to corona and the intensity is not so good.
Stock GT mini was 128 kcd
With Black flat led it was 160 kcd played a lot with focusing. (no matter if it black or white flat because the led size is same.)
Replaced the reflector to Emisar D1S reflector and got 213 kcd unfocused. Then played with focus and the top was 255,5 kcd
Now it has the white flat but need to measure it again.

[Texas_Ace]

interesting and good to know. :+1:

[ZozzV6]

@Texas_Ace

interesting and good to know. :+1:

Yes. So If you plan to use white flat in mass produced flashlight the first thing need to know is the manufacturer capable of make good enough reflectors and consistent height centering rings to not mess up focus if the reflector is good. If they can’t the whole idea is worthless.

[gtxxl]

1000 thanks, Texas_Ace, Today I got the conversion kit to Germany , :heart_eyes:

[Maverick1947]

@gtxxl

1000 thanks, Texas_Ace, Today I got the conversion kit to Germany , :heart_eyes:

Wow that’s pretty awesome! Can’t wait to get mine. Thanks for posting.

[Texas_Ace]

Great! First time I have seen the final kit, glad to see they took my advise and shipped it with the switch already attached and a white centering ring instead of black.

[teacher]

@ gtxxl…… Nice! Are you in Bremen, GA??

[ZozzV6]

I got my kit yesterday also in IYP365 box. My led dome was very dirty and the led corner damaged a little. I cleaned the dome and assembled my GT and it worked about 20 seconds then half of the led died. I posted some images on a facebook group and Neal contacted Lumintop immediately and I will get another led. And they will improve on packing. This is an expensive led. It should not packed without any protection with other parts rattling in a box.

Thanks Neal for fast help!

[the4ds9]

@JasonWW

What cell is under the wrapper?

The 3120mah sounds like a Sony VTC6? Remember that even though the wrapper says 30A continous, it’s really not.

I would stick to oem cells and avoid rewraps unless you know for sure what cell is under the wrapper.

Thanks so much JasonWW for your great advice. :+1: