NightTime
Newly Enlightened
- Joined
- Dec 3, 2008
- Messages
- 152
Today I publish runtimes for my SC64w HI 18650 XHP35 – 4500K
I bought the light in January 2022 directly from zebralight•com through shipito•com as a "man in the middle", which I don't recommend unfortunately. Finally reshipped to Canada. I now use Stackry instead.
Here's the actual version I bought:
Disclaimer:
Please note that my shoebox is only roughly calibrated, so don't take these numbers as the absolute truth.
All tests were done with a Sanyo NCR18650GA 3500mAh battery.
All tests are carried out under cooling conditions with compressed air. Why's that ? See Selfbuilt's elegant explanation. Worth reading:
https://www.flashlightreviews.ca/method.htm#Cooling
Also, for all levels where temperature is assumed to build up, I added the results without cooling the light. I think both kind of runtimes are important and tells something different.
Let's start with Level 12 (turbo):
A nice steady 1042 lumens output for 41 min then drop to 100 lumens until the 87th min mark.
At the ambient temperature of my basement, the output quickly drops into a ~345-394 lumens zone for around 2.9 hours. This reminds me the official specs about runtime…
Level 11:
A steady 710 lumens for 76 min then a sharp drop to ~102 lumens until the 110th min mark.
At the ambient temperature of my basement, the output quickly drops into a ~346-409 lumens zone for around 2.9 hours.
Level 10:
A steady 424 lumens for 153 min then a sharp drop to ~103 lumens until the 181st min mark.
At the ambient temperature of my basement, the output quickly drops into a ~358-414 lumens zone for nearly 3 hours.
Level 9:
207 lumens for more than 6.1 hours
Level 8:
103 lumens for more than 13.1 hours
First 200 minutes:
Zebralight - SC600w Mk IV Plus Cree XHP50.2 - 4500K
Versus
Zebralight - SC64w HI NW - Cree XHP35 - 4500K
Interesting to see how the SC600w is by far more efficient. Maybe the bigger driver, maybe the LED emitter, maybe both, maybe I don't know
Finally, I compared the the Emisar D4V2, Zebra SC64w and the Zebra SC600w, all around 700 lumens levels and found interesting results:
Cooled or not, the Emisar D4V2 has almost the same curves as the SC64w. It's nice to see similar efficacy for output/runtime and also a similar heat management from the D4V2 compared to a Zebralight. One point for Zebralight: it does it with a smaller light. One point for Emisar: it does it at much lower CCT. The S600w is just awesome !
The next runtime test will either be with my old SC62w to see how it compares to my other 18650 Zebralight or either my SC5w Mk II or maybe the H604c 18650 XHP50.2 4000K High CRI headlamp. I am not fixed. if I get at least one vote on one of them, I'll accept it.
I bought the light in January 2022 directly from zebralight•com through shipito•com as a "man in the middle", which I don't recommend unfortunately. Finally reshipped to Canada. I now use Stackry instead.
Here's the actual version I bought:
Disclaimer:
Please note that my shoebox is only roughly calibrated, so don't take these numbers as the absolute truth.
All tests were done with a Sanyo NCR18650GA 3500mAh battery.
All tests are carried out under cooling conditions with compressed air. Why's that ? See Selfbuilt's elegant explanation. Worth reading:
https://www.flashlightreviews.ca/method.htm#Cooling
Also, for all levels where temperature is assumed to build up, I added the results without cooling the light. I think both kind of runtimes are important and tells something different.
Let's start with Level 12 (turbo):
A nice steady 1042 lumens output for 41 min then drop to 100 lumens until the 87th min mark.
At the ambient temperature of my basement, the output quickly drops into a ~345-394 lumens zone for around 2.9 hours. This reminds me the official specs about runtime…
Level 11:
A steady 710 lumens for 76 min then a sharp drop to ~102 lumens until the 110th min mark.
At the ambient temperature of my basement, the output quickly drops into a ~346-409 lumens zone for around 2.9 hours.
Level 10:
A steady 424 lumens for 153 min then a sharp drop to ~103 lumens until the 181st min mark.
At the ambient temperature of my basement, the output quickly drops into a ~358-414 lumens zone for nearly 3 hours.
Level 9:
207 lumens for more than 6.1 hours
Level 8:
103 lumens for more than 13.1 hours
First 200 minutes:
Zebralight - SC600w Mk IV Plus Cree XHP50.2 - 4500K
Versus
Zebralight - SC64w HI NW - Cree XHP35 - 4500K
Interesting to see how the SC600w is by far more efficient. Maybe the bigger driver, maybe the LED emitter, maybe both, maybe I don't know
Finally, I compared the the Emisar D4V2, Zebra SC64w and the Zebra SC600w, all around 700 lumens levels and found interesting results:
Cooled or not, the Emisar D4V2 has almost the same curves as the SC64w. It's nice to see similar efficacy for output/runtime and also a similar heat management from the D4V2 compared to a Zebralight. One point for Zebralight: it does it with a smaller light. One point for Emisar: it does it at much lower CCT. The S600w is just awesome !
The next runtime test will either be with my old SC62w to see how it compares to my other 18650 Zebralight or either my SC5w Mk II or maybe the H604c 18650 XHP50.2 4000K High CRI headlamp. I am not fixed. if I get at least one vote on one of them, I'll accept it.
