Top of the ramp might be relatively stable for a while but I wouldnāt say for certain how bright that is. Iāve got my 8 30Q cells charging so will see what the go is using the ceiling bounce app with the light tailstanding inside a 22Ā°C room with a fan oscilating.
I got about half the output number as turbo at the top of the ramp and it ran like so. The sag may have been part heat, part cells to attirbute to the decline in output over the 10 minutes.
I left it untouched pointing at the ceiling in a 22Ā°C air conditioned room with a fan oscilating 2m away. I checked the temp 3 times and it never got hot to the point I was worried about it. I just wanted to go light some trees up from my balcony which are a few hundred metres away (~300m)
Turbo would have got much hotter, sagged much faster and definitely would not have got to 10 minutes in-hand-use in warmer climates like Australia most of the year as it would just be too hot to hold.
EDIT: I forgot to mention the jumps in output is another light source being picked up by the phone too if anyone is wondering why the light increased for a little while. That was when I came back into the room to check temp and stuff around. Iām not sure why it started to climb after the last spike up until I stopped loggingā¦
You are correct that the top of the ramp is about 50-60% of the output as turbo and it is set that way for various reasons. One of which is that at this level it can sustain the output for an extended time, where you are correct, turbo will indeed trigger thermal protection in a few minutes and have a much more drastic drop in lumens. That is why turbo is only for limited bursts.
Got the Mail - Firefox does not work but IE worked .
Yesterday i ordered three times one CW conversion kit and two carriers .
Now its time to wait ā¦ā¦.
Thank You guys ā¦ā¦. M.
I ordered this today. (Lumintop GT70 Conversion Kit XHP70.2 LED NW+1*Centering Ring+1*TA Driver Giggle Monster)
I hope it has the right color. (NW)
Many thanks to the friendly users, in this flashlights forum. :+1:
Got a question about heat. Where is the threshold where the heat might damage the components? I know that when something is too hot to hold is above 50C. Does that temperature already represents a threat to the components? LEDs and drivers?
After seeing some videos about reflowing LEDs I can assume they can stand much higher temps than my hand is comfortable with.
Hmmmā¦ technically Iām not sure. Let someone else answer that one who knows for sure.
I let a Convoy S2+ with an 8 chip driver go one time for about 45 minutes on High. When I discovered/remembered it the thing was so hot I could not touch it barehanded without getting burned (which I did) before I grabbed a towel & shut it off.
It cooled off and continued to work fine. I do not know how hot it wasā¦. BUT IT WAS HOT
I tested this light with a fully charged set of 8 30Q cells and disabled thermal protection. It peaked at 90C in a very hot garage.
This is fine for the components, they are generally rated for 125c or more and are not usually damaged until at least 150c.
Now the cells are the bigger issue, most cells max temp is around ~75c+, although the cells will obviously not be as hot as the head, when I pulled them out they were only around 50-60c IIRC.
Small correction - each cell carrier is 4S. Running three carriers would be 3P.
Like Newlumen said, you will need a coupler. The good news is that because of the GTās cell carrier design, the battery tube doesnāt need to be conductive, so your coupler could be 3D printed if necessary.
IDK, maybe yes? If you get burned you might sue the company. They donāt want that or the bad reputation of burning people.
It all depends on the light as well. Small 16340 lights that do 900 lumen can probably burn up the led due to the lack of surface area to dissipate heat. The led is always hotter than the outer surface. Iāve heard of lights getting so hot that the solder under the LED would get soft and then a sideways bump would knock the LED right off of the mcpcb.
So having a thermal stepdown is always good for high powered lights. Itās still not mandatory, though. My L6 is over 130 watts (17.6A) and it doesnāt even have a thermal stepdown (old Narsil verion). I turn it down when I feel itās hot enough, so no big deal.