[PART 1] Official BLF GT Group Buy thread. Group buy officially closed! Lights shipping.

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Enderman
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teacher wrote:
Hmmmmm…… Your right, TA has been absent it seems. I hope everything is OK with him.
I miss his thought provoking & knowledgeable posts. I too have learned much from them.Hopefully he will show up again soon…. real soon. Smile

He told me he was pretty busy IRL and not on BLF much.
He’ll come back when he has time for it Smile
nodoubt
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will this light be in my hand before the first snow storm ?
its 91 degrees here today Facepalm

The Miller
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These kind of topics with a lot of people saying things are kind of hard to follow sometimes for me, and I don’t do technical stuff Smile
So that is why you see “general communication” after my name I keep track of this.
Behind the scene a lot is going on.
But at times people doing a lot of technical work are only visible in email and PM.

The new carrier needs a driver adaptation so a lot of talk and designing going on here. Leaving less time to post.
(Check for example Fritz seemingly silent in the FW3A but that is because he is doing a lot not so visible to all now.)

Wink

BrianK
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Not just for you TM. I have to glance up to see what thread I’m on and we have it easy. You have it much worse since you’re a mover and shaker on multiple threads.

teacher
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Enderman wrote:
teacher wrote:
Hmmmmm…… Your right, TA has been absent it seems. I hope everything is OK with him.
I miss his thought provoking & knowledgeable posts. I too have learned much from them.Hopefully he will show up again soon…. real soon. Smile
He told me he was pretty busy IRL and not on BLF much.
He’ll come back when he has time for it Smile
Thank you for the info Enderman… good to know he is OK.

You never know how a horse will pull until you hook him up to a heavy load./"Bear" Bryant 

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pommie
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Check out the new sig Silly Silly

Cheers David

Nothing to see here folks, move along...

The Miller
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Hahaha nice one pommie

xCentrino
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pommie wrote:
Check out the new sig Silly Silly

Cheers David

If you ever get bored, I’ll bare the burden of taking that proto off your hands for a week or so. Innocent

pommie
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You are quite welcome to try and pry it from my wife’s grubby little hands, I tried and failed Wink

Cheers David

Nothing to see here folks, move along...

strayz
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We need moar pictures!!!

teacher
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pommie wrote:
Check out the new sig Silly Silly

Cheers David

Very nice pommie, very nice indeed!!! . Thumbs Up .. Beer

You never know how a horse will pull until you hook him up to a heavy load./"Bear" Bryant 

 .................................. "Slow is Smooth, Smooth is Fast" ...................................

       Texas Lumens Flashlights / M4D M4X Deals : sign up - save $$$$  

         Rudeness Level _ mΩ _ {width:70%} _ LightWiki _ LED Tint Chart  

      Xlamp size chart _ BatteryU _ Flashaholic? Need Professional Help???            TheOriginal _ TAB _ LightSearch _ BatterySearch _ 14500's _ DiCal 

 

                                             

mrheosuper
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Sky wrote:
I know this has been talked about before in previous posts but can’t seem to find it. I need to buy batteries for the GT. What are the best ones to buy and where can I find them. Thank you in advance for the help.

the best battery for this light is NCR18650GA, which has highest capacity now, and the cell can handle the current no problem

Forgot my pen

The Miller
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We dont know if the GA tops make contact in the stock carrier
button top GA or 35E seems the best, followed by 3400nAh protected panasonics, that do have buttons (I dont know about the GA and 35E)

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mrheosuper wrote:
Sky wrote:
I know this has been talked about before in previous posts but can’t seem to find it. I need to buy batteries for the GT. What are the best ones to buy and where can I find them. Thank you in advance for the help.

the best battery for this light is NCR18650GA, which has highest capacity now, and the cell can handle the current no problem

For this,I have ordered my 8pcs from nkon.nl,as I can’t buy Liion batteriesfrom China, and they are on their way now. Smile
Theodore41
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The Miller wrote:
We dont know if the GA tops make contact in the stock carrier
button top GA or 35E seems the best, followed by 3400nAh protected panasonics, that do have buttons (I dont know about the GA and 35E)

Look at this.
https://eu.nkon.nl/rechargeable/18650-size/sanyo-18650ga-button-top.html
lionheart_2281
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NCRB’s would be best value for money surely

The Miller
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Theodore41 wrote:
The Miller wrote:
We dont know if the GA tops make contact in the stock carrier
button top GA or 35E seems the best, followed by 3400nAh protected panasonics, that do have buttons (I dont know about the GA and 35E)

Look at this.
https://eu.nkon.nl/rechargeable/18650-size/sanyo-18650ga-button-top.html

Ah I have had a talk over the phone with the owner of NKON and his buttons are hand welded on there to ensure minimum resistance added.
JamesB
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I’ve had top notch service from Nkon and their price are great for a European shop.

About the choice of batteries, i’v come to the conclusion that the only battery i need for all my 18650 usage are the superbly versatile 30Q, they are only 15% less capacity than the highest capacity 18650, they have a very low internal resistance that make them capable to deliver very high currents when needed, they are very resiliant to repeated high current usage ( more so than the VTC6 or HG2 according to Mooch tests) and they are cheap and very available.

It greatly simplifies my battery upkeep/rotation.

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Does anyone know the beam angle of the GT?

Just did a highly inaccurate measurement of my C8 and the hotspot seems to be roughly 38cm across at 5 meters or +-2 degrees or a 4 degree cone. I wonder how collimated the GT’s beam is?

darkpenguin
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mrheosuper wrote:
Sky wrote:
I know this has been talked about before in previous posts but can’t seem to find it. I need to buy batteries for the GT. What are the best ones to buy and where can I find them. Thank you in advance for the help.
the best battery for this light is NCR18650GA, which has highest capacity now, and the cell can handle the current no problem

PSA – Cells pulled from recent (less than 2 years old) Teslas appear to be derived from the NCR18650GA, but have additional Tesla “special sauce” added that appears to improve cycle life considerably, as well as survive abuse considerably better than most other cells. I’ve got a couple test cells I’ve cycled from 4.25 to 0.0v and back (clamped in dead short for 24 hours after 5A discharge to 0.5v) and after 10 cycles like that, they’re still within 50mAh of the non-abused cells. Also notable is internal resistance drops considerably with heat – unlike most cells that only seem to noticeably show this below 0C, the cells I’ve tested have a pretty significant lessening of voltage sag above 40C.

Like the normal NCR18650GA, not optimal for high current applications, but if you don’t need a 30Q, it’s really hard to beat these. I’ve bought mine from the guy below, but they’re pretty common on ebay now as well. Previous wrapped cells I’ve gotten from him did need a solder blob to work with lights like the Q8. I’ll report when I get my latest order if the current ones are the same.

http://edisonmotors.net/shop/product/tesla-model-s-18650-battery-cells-3...

The Miller
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What?!
Please make a topic about this
I am sure lots of people don’t read the GT thread and what you write is very interesting (and a bit weird)
This deserves a deeper talk Wink
(Me thinking about dangers of under voltage dendrites is something id like to read smarter people react to)

darkpenguin
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The Miller wrote:
What?! Please make a topic about this I am sure lots of people don’t read the GT thread and what you write is very interesting (and a bit weird) This deserves a deeper talk Wink (Me thinking about dangers of under voltage dendrites is something id like to read smarter people react to)

No time right now for a solid write up, but once I get the new cells in (my previous cells were from a P85, no silicon in the anode that I’m aware of) I’ll be doing a bunch of tests and can do a better write up then. I’ll also dig up the old 0.0v test cells and see how much they’ve degraded over the past year.

I might attempt more destructive tests on the new batch too. (I say attempt because past attempts with a jumper cable were just that, no fire, just a really hot cell, and one that made a “click” noise and went open circuit)

Sciencetists
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I ordered three of the the 4 packs of 30Q from banggood. I’m going to use 4 in my Q8 and 8 in the GT.

After the coupon it was $55CAD for 12cells, $4.5CAD each. It’s hard for me to get anything else in that price range.

The Miller
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Seems like a real good price yeah.

Thanks darkpenguin, very interesting!

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Sciencetists wrote:
I ordered three of the the 4 packs of 30Q from banggood. I’m going to use 4 in my Q8 and 8 in the GT.

After the coupon it was $55CAD for 12cells, $4.5CAD each. It’s hard for me to get anything else in that price range.

What do I do to get The coupon code ?

You going to pull those pistols or whistle Dixie
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I bought 8 30q cells but accidentally ordered flat top. Hoping I can make them work. Figure a little magnet or something should do the trick but I’m hoping the carriers wind up working with flat tops. Oh well, live and learn I guess, got a great price so worst case I’ll get 8 more and repurpose these.

DB Custom
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The way a carrier is loaded pretty much excludes a magnet top, it’s been said that the isolation disk can be removed to make flat tops work but you’ll have to be sure you observe proper polarity when inserting cells, it’ll be on you if you invert one accidentally.

Tom E
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mrheosuper wrote:
Sky wrote:
I know this has been talked about before in previous posts but can't seem to find it. I need to buy batteries for the GT. What are the best ones to buy and where can I find them. Thank you in advance for the help.
the best battery for this light is NCR18650GA, which has highest capacity now, and the cell can handle the current no problem

35E are higher according to reviews.

Sciencetists
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Gunslinger686 wrote:
Sciencetists wrote:
I ordered three of the the 4 packs of 30Q from banggood. I’m going to use 4 in my Q8 and 8 in the GT.

After the coupon it was $55CAD for 12cells, $4.5CAD each. It’s hard for me to get anything else in that price range.

What do I do to get The coupon code ?

It was a M4DM4X deal, I think I found it posted on BLF but a quick google turned up this page: https://m4dm4x.com/4pcs-samsung-inr18650-30q-button-top-new-deal/

Hopefully it is still active. They’re button tops too!

Sciencetists
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I bought this shoulder strap for the GT: https://www.aliexpress.com/item/100-Genuine-CANPIS-Leather-Camera-Shoulder-Neck-Carrying-Strap-Black-for-Leica-Fujifilm-SLR-Mirrorless-Camera/32469338138.html

It showed up yesterday and it is very nice. I think it will work very well. I am very excited for this light.

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