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.
@Imcmann, you just need NCR18650GAs, since even the GT70 doesnāt draw a massive amount of power per cell(about 100W-120W), so about 13W-16W per cell:
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 āHoly $hit / F%@#ā when I reveal the BLF GT70. I just canāt stop smiling, and that is what a hobby should do!
Thanks so much to the entire Project Giggles Team!
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.
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.
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 donāt is that they purposely de-focus it some to get rid of it.
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.
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 canāt the whole idea is worthless.
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.