(prototype) the GT Mini

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wellerus
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Is it normal that when a gt mini is turned off, led still glows like a moon mode, don’t know maybe 1 or 2 or 3 lux, so i can light a watch and see what’s the time, also can clearly see a spot on a white wall.
Even if i lock a torch with a 4 press of a button, so the green led on a button goes off, but xpl-hi led still glows a little, so it’s impossible that an xpl-hi led is iluminated a little from a button led.
Do you think i need to RMA it , because i have befor this one another gt mini NW, but i didn’t see that a main led shines even if a torch is off.
In manuals it writes that a parasitic drain is around 27micro A but on my torch parasitic drain is when a torch is off 4.3mili A.
Is this a problem with a driver or with a led?

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if you lockout the tailcap for a minute and then reconnect - does the led glow before you hit the switch first time too? 

 

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wellerus
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Yes, as fast as i turn down a tailcap, led blinks two times and then dim glows, i don’t need to push a power button.

teacher
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No, that is not normal. When the light is OFF, the LED should be OFF.

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

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JasonWW
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wellerus wrote:
Is it normal that when a gt mini is turned off, led still glows like a moon mode, don’t know maybe 1 or 2 or 3 lux, so i can light a watch and see what’s the time, also can clearly see a spot on a white wall.
Even if i lock a torch with a 4 press of a button, so the green led on a button goes off, but xpl-hi led still glows a little, so it’s impossible that an xpl-hi led is iluminated a little from a button led.
Do you think i need to RMA it , because i have befor this one another gt mini NW, but i didn’t see that a main led shines even if a torch is off.
In manuals it writes that a parasitic drain is around 27micro A but on my torch parasitic drain is when a torch is off 4.3mili A.
Is this a problem with a driver or with a led?

It’s a problem with the driver. The led is just a dumb device with constant positive power going to it. It’s the driver that is responsible for the ground side. Apparently there is some current leaking through the driver allowing power to flow (like a bad 7135 chip or capacitor for instance). 4mA can run a battery down pretty fast. I would see about getting it replaced.

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PhatPhil
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Any plans for an XHP70 version of the GT mini?

djozz
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The problem can be under the led also, if there is a minute short between led- and the central pad (which is connected to ground), a small piece of dirt is enough to cause that, the led lights up. Is it really more than a lumen? (you can get a visisble illumination of a watch down to 0.01 lumen, in which case the drain is 0.03 mA which is totally negligable.

JasonWW
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PhatPhil wrote:
Any plans for an XHP70 version of the GT mini?

That’s what their ODF30 is. It’s got a bigger battery of course, but very similar.

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bluereidon
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I just received my GT Mini NW from Lumintop Aliexpress store and I am so happy with it I cant even express it with words!Extremely well build very handy pocket thrower with perfect Kelvin emitter for me!Wicked flashlight!

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great! 

 

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sgt253
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I just received one also. I am really happy with the light! The size, the distance the beam throws, the tint of the emitter, the UI. Pretty cool that I have a light similar to the BLF GT that I can carry in a pocket. I love BLF! Thanks to all for the effort. Regards.

bluereidon
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sgt253 wrote:

I just received one also. I am really happy with the light! The size, the distance the beam throws, the tint of the emitter, the UI. Pretty cool that I have a light similar to the BLF GT that I can carry in a pocket. I love BLF! Thanks to all for the effort. Regards.


Same from me man!All the lights BLF community makes are great!
I cant wait to save money for the bigger brother of GT Mini,but I am not sure which to get GT or GT70,maybe the 70 is more of a usable beam
Lonelydad
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Two comments:

1. I sometimes have a problem turning the light off. Usually if I try a few times or ramp up a little ways then try it will work. Not a big problem so not worrying about it.

2. Got mine from Banggood. I ordered a neutral white emitter, received my light with a big CW sticker on the box. I informed Banggood, and their response was basically, ‘mistakes happen once in a while. Will you accept 400 Banggood points [$4 USD] to make it all better.’ Not really – I ordered a neutral white because that is what I wanted.

Anyone have any suggestions on best next step?

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teacher
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Next step to what?? Not trying to be funny, I just don’t understand. Are you asking about #1, #2, or both??

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" ...................................

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P33
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Just don’t agree to anything that doesn’t satisfy you. They just offer silly coupons and wait to see if you’ll escalate it.

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My light had really bad paracitic drain when off, I’m talking an order or magnitude higher than it should of been! It was drawing around 1100-1200 micro amps while off. Not a new development but I just now finally got tired of it and decided to do something about it.

I removed and replaced driver components one at a time (do note I’d already deleted the unnecessary voltage divider since the tiny85 monitors cell voltage internally) till the draw went away. The culprit: C1
I’m now measuring 37uA with the aux LED off, 137uA with it on high (blue led with 5.6kohm R6). I can finally leave the tailcap not locked out again!

Also swapped to the good FET and swapped to a SST20 while it was apart. Reading 156kcd now @ 1300Lm.

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JasonWW
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Cereal_killer wrote:
My light had really bad paracitic drain when off, I’m talking an order or magnitude higher than it should of been! It was drawing around 1100-1200 micro amps while off. Not a new development but I just now finally got tired of it and decided to do something about it.

I removed and replaced driver components one at a time (do note I’d already deleted the unnecessary voltage divider since the tiny85 monitors cell voltage internally) till the draw went away. The culprit: C1
I’m now measuring 37uA with the aux LED off, 137uA with it on high (blue led with 5.6kohm R6). I can finally leave the tailcap not locked out again!


You think the C1 had a crack internally which caused a small short? Maybe just defective from the start?

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Bob_McBob
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Is it actually possible to order a GT mini without the bezel glued? I’m getting rather sick of manufacturers that work with BLF surprising us with glued parts on the production run. Enthusiast lights should never be glued.

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Lumintop, you have a lot to answer for Tired

teacher
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What is that? Glue on the threads, crappy anodizing, crappy threads, or what??

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" ...................................

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Bob_McBob
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That’s blue Loctite, which makes removing the bezel a huge pain in the ass.

teacher
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OK…. That’s what I thought but could not tell for sure from the pic.
I just gave up on getting mine off… it was not worth the trouble to me. Facepalm
I can’t understand why they would use that much….. that is total & complete overkill if they are going to use it.
If it is a BLF light I wish they would stop using any glue or LockTite at all.
Maybe if we start voting with our wallet, they will. Wink

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  

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monkeyman77
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mine will be here tomorow unless the storm stops ups i am so excited

JasonWW
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Bob_McBob wrote:
Lumintop, you have a lot to answer for Tired



That’s normal.

Here’s my glued ODF30.

They said it was glued, so they have nothing to answer for.

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liteupmynite
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Hello, I just  purchased a GT Mini and will receive it today.

 

QUESTION: Are IMR 18650s or 18350s batteries okay to use in it?

 

thanks!

Lonelydad
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liteupmynite wrote:

Hello, I just  purchased a GT Mini and will receive it today.


 


QUESTION: Are IMR 18650s or 18350s batteries okay to use in it?


 


thanks!


I have a Samsung INR18650 30Q in mine, and it works just fine. I would look for documentation saying it would be OK before using two 18350s, due to the higher voltage than two CR123s.

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mortuus
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liteupmynite wrote:

Hello, I just  purchased a GT Mini and will receive it today.


 


QUESTION: Are IMR 18650s or 18350s batteries okay to use in it?


 


thanks!

yes high drain 18650 recommended, and 18350 will work if using the shorter tube.

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RobertB
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Mine was glued with a bunch of thread locker too. Two strap wrenches and the bezel was off in a minute. Used naptha to clean it up.

liteupmynite
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Thanks!!! Look forward to comparing the Mini to it's bigger brother )))

 

mortuus wrote:
liteupmynite wrote:

Hello, I just  purchased a GT Mini and will receive it today.

 

QUESTION: Are IMR 18650s or 18350s batteries okay to use in it?

 

thanks!

yes high drain 18650 recommended, and 18350 will work if using the shorter tube.
mortuus
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liteupmynite i think the bigger will eat up the smaller Sad

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