Olight R50 Seeker measurements (26650, XHP50)

[Impossible lumens]

Very nice review with lots of good information. I have the R50 Seeker and can chime in that yet another sample is slightly green and low CRI. By slightly, I mean not very noticeably and I don't say "man, that is green" every time I turn it on as with some other Olight products (m3xs ut). Call it, off of pure white via a little green low CRI type tint. While I like the beam profile on this light, I'm also sure that Vinhs' SD version would beat the crap out of stock R50. If it weren't for the price I got on this stock light, I would in a heartbeat take R50VN over R50 at retail. Thanks for the cool review.

 

[maukka]

Runtime graph comparing the Olight R50 Seeker and the Nitecore EC4SW.

When looking at the lumen-hour results, it's clear that there's pretty much no difference in efficiency between the XHP50 and the MT-G2.


I measured the Olight 26650 battery at 4940mAh at 2A discharge, while the two Keeppowers used in the Nitecore total 6300mAh. This is very close to the ratio that can be observed in the lumen-hours: 6300mAh/4940mAh=1.275 vs. 2123lm*h/1696lm*h=1.252. I didn't record the energy in watt-hours for the batteries, which would have been more accurate though.

 

[Marfenix]

:twothumbsWay to go Maukka! A real fantastic review! :twothumbs

 

[maukka]

I measured the Olight 26650 battery at 4940mAh at 2A discharge, while the two Keeppowers used in the Nitecore total 6300mAh. This is very close to the ratio that can be observed in the lumen-hours: 6300mAh/4940mAh=1.275 vs. 2123lm*h/1696lm*h=1.252. I didn't record the energy in watt-hours for the batteries, which would have been more accurate though.

Got the Wh data for the batteries at 2A discharge with the SkyRC MC3000: Olight 26650 4500mAh 18.01Wh, 2x Keeppower 18650 3500mAh 21.77Wh. So the Keeppowers offer only 20.9% more energy, but produce 25.2% more total light energy over the test period. The difference is so small that I wouldn't conclude that the MT-G2 or the Nitecore is more efficient. Could be the measurement setup.

 

[Toby]

:twothumbsThank you buddy. I can learn something from your post.

 

[Bullzeyebill]

Moving this to Flashlight Reviews.

Bill

 

[maukka]

Olight also sent me the R50 Seeker in raw copper. Other than the body material and hence the massive(!) weight, it's absolutely identical to the aluminum version. However, if not cooled with a fan there's a slight difference in time it takes to step down on turbo because of the higher mass and better thermal properties of copper. With cooling the stepdown is delayed for a bit more than minute on turbo. No significant difference in output.

Here's the Al-Cu pair.

And the runtimes.

 

[marcinkov]