Zero [Review]s: Olight R50 Seeker, (26650, XHP50, ~2500lm)


Olight just released a couple of new lights - the R50 Seeker, and the S1A Baton. I already reviewed the S1A, so now it’s time for the R50 Seeker. I’m excited to review these, and appreciate Olight for providing these for review. And thanks again to Calvin at Illumn for facilitating.

Right-click and open in new tab for the full size of the pictures!

  1. Olight R50 Seeker Official Specs:
  • Features a Cree XLamp XHP50 LED, maximum output of 2500 lumens,and runtime up to 50 hours.
  • Side switch cycles through three brightness levels. double click access to Turbo while triple click access to Strobe.
  • Multi-function side switch featuring a battery power indicator which glows red when battery runs low.
  • automatically returns to your last brightness level from the off position with the built in memory function.
  • Built-in rechargeable 26650 4500 mAh lithium battery with charging cable included.
  • Aircraft-grade aluminum body with anti-scratch type III hard anodizing
  • Ergonomic design with chamfered edges for a comfortable feel in the hand.
  • Lock-out function to prevent accident activation.
  • Waterproof up to 2 meters.

This product has the following specifications (ANSI/NEMA FL1-2009 Standards):

Parameter Rating
Max Output (lumens) 2500
Low (lumens) 50
Max Run Time (hours) 50
Beam Distance 297 m
Peak Beam Intensity (candela units) 22,000 cd
Water Resistance IPX8 (up to 2 meters)
Impact Resistance 1 m
Head Diameter 1.65 in. / 42 mm
Length 5.24 in. / 133 mm
Battery Type 26650
Weight (oz) 8.9900
pocketclip No
User Manual No

The above section contains the manufacturer’s descriptions and claims, not my impressions or results.

  1. Olight R50 Seeker Short Review:

Fantastic XHP50 26650

light. Perfect for a first time serious flashlight buyer, who has little ‘flashlight’ setup (no charger, batteries, etc).

  1. Olight R50 Seeker Long Review:

##History and Use-Case

The Olight R50 is the next generation of the Seeker series - the previous being the Olight R40. This is a step forward - the R40 had an XM-L2 and was rated at only 1100 lumens. The R50 has an XHP50, which gives an estimated 2500 lumens. It also ships with an improved capacity battery (4000 vs 4500 mAh).

This solidifies Olight’s entry into the “compact wall-o-light” category and is in a class all to itself in the single 26650 XHP50 category.

##What’s Included

One of the more robust packages I’ve seen with a light, and one that’s clearly been thought out and planned as a “one shot” type purchase. You’ll get everything you need to roll with!

  • Olight R50
  • Lanyard
  • Olight dual-polarity 4500 mAh 26650 cell
  • Micro-USB charging cable (1m)
  • US-Plug wall charger with a USB port
  • User Manual


There are a lot of them this time! Enjoy! (Or hey, skip them, you’re in control here.) Also have a few indoor beamshots and also outdoor beamshots.

##Build Quality, Durability, and Disassembly

The R50 Seeker

is a very well manufactured, high quality light. The rubber cover

over the micro-USB port seals very firmly, and the micro-USB cable attaches snugly in the micro-USB slot.

The light does not disassemble, except to unscrew the tailcap

and access the battery tube. Note that both those little buttons there are springy. One (the thinner taller) is presumably what allows in-light charging. And that black disc seems to be rubber, and is surprisingly grippy!

The head is press fit in, like many other current Olights, and is not to be removed.

Looking down the battery tube, one can see the positive terminal - it’s a little brass button

almost just like on the Olight S1A.

The other components are high quality too. The wall wart has a USB out,

and a non-polarized C7 in

Provided with the package, though, is a plug-to-non-polarized-C7

and this has a locking bit, so it’ll click in and lock. It’s removed by a button on the wall wart. The combination of these two items works together perfectly, but the C7 adapter does look and feel like a bit of an afterthought.

The micro-USB cable

is nice quality too (unlike many other cables that come with lights)!

##Package and Manual

The package

is something else, with this R50! It arrives encased in a thin plastic wrap.

It’s a very nice box


[side, with QR code]

[other side]


held closed by a flap

secured by a couple magnets. Inside the box is the flashlight - a ribbon is provided to allow easier lifting

of the precious cargo. The other goods are inside a smaller box,

which also has a ribbon to allow removal. All the accessories

are in this little box, including the manual.

These are nice touches! It might not seem necessary but for the type of light and consumer this is aimed at, it seems appropriate.

The manual

is a typical Olight manual. A few pages of English, and a bunch of pages of non-English. The User Interface is covered, and general specs and warranties

on the light too.


There’s a nice lanyard, which has a little button

which allows tighter or looser retention. There’s no clip, and that’s fine; this light is really too big to comfortably pocket. There’s no pouch, and this light might be great for a belt pouch. I personally would rather carry it in a bag - and in that case, a pouch might still be great.

A second option, if no pouch was provided, would be to provide a lens cover. The glass on the R50 is very clear - so clear it’s hard to tell how thick it is. As a result, it’s easy to think it’s thin glass. So it’d be nice to have a way to protect it. A little cap would be great (think like the cap binoculars have on the lens), then you could retain the light in a bag very easily! and not have to futz with a pouch.


The Olight R50 Seeker works on one 26650 cell. The light ships with a 4500 mAh 26650 Olight cell

It’s a flat top


is a proprietary cell. On the negative terminal side, it’s clear what Olight has done

to make this in-light charging work - the negative terminal is “dual-polarity” - the light can charge because the negative side has both positive and negative poles. Would this be easy to short? Well I’ve handled the cell extensively, and also placed it into an external charger. Technically placing the cell into a charger, if good contact is made, would short the terminals. I did not have any issues from doing this, so Olight apparently has some protection built in that prevents shorting, or even tripping the cell’s protection.

The R50 will work with “any” cell (I say “any” generally - it’ll work with my protected EVVA cells, which are of course, long). So it’ll work with other protected cells as well.

It’ll also work with 18650s - the output should be the same (the cells would be the same voltage) but the runtime will be dramatically shorter.

Huge note about the cells on this light - both the one that’s provided, and the ones you might have on hand:

1. The 26650 that ships with the light does not work in external chargers. So this Olight dual-polarity 26650 will only be charged in the Olight R50.

  1. The R50 will not charge non-Olight 26650’s.

The real point of the notes section there: ^ One really needs to be married to or willing to own a bunch of Olight 26650’s if they need multiples. I don’t and this isn’t a big deal to me, BUT the light will work best on just the Olight cells. But “best” is confusing: The light output will be the same with any cells, only recharging will be affected. So if you never plan to use this light to recharge any cells, this shouldn’t pose any issue whatsoever.

I have just one other kind of 26650, an EVVA 4000 mAh protected cell. It’s fairly longer

than the Olight cell. And you can see here

the difference in a regular 26650 and Olight’s.

Also worth noting is that the provided cell fits much more snugly than the EVVA cell I have. The EVVA tended to rattle, but the Olight rattles very little. It can be made to rattle, but there’s probably less than 1mm of play.

Onboard charging works great, but might be considered slow. If power is going in, the micro-USB port is lit. If the cell is at capacity, the port area is green.

If the cell is accepting power, the port lights red.

Also the light does work

when the cell is charging.

My cell took around 6 hours to charge each time it was fully discharged.

##User Interface and Operation

The R50 has a single silicone side button. It’s the same material as on other recent Olights, like the S1A I just reviewed and the S1 (which I have in brushed titanium, and love!). So all the input you have with the light will be through that button. I will say that I had some trouble with the button. It worked 100% of the time if I was extremely deliberate with the clicks. If I was even slightly careless, I had unplanned results.

The light does have an electronic switch, and as with all electronic switches, there might be some parasitic drain. It does have an electronic lockout. Otherwise, unscrew tailcap to prevent parasitic drain (and accidental activation).

The R50 also has mode memory (excluding turbo and strobe). I personally do not care for mode memory, but if that’s your thing, then here you go. However in this case there’s direct access to low, so I’m good to go as well. I like to be able to trust what mode is going to come on with out relying on my (admittedly bad) memory to say what it’ll be. So the long press for Low is very appreciated. Of course the same can be said for direct access to turbo….

State Action Result
Off Click Last mode (Memory)
Off Hold Low
Off Hold + Hold Electronic Lockout
On Click Off
On Hold L>M>H
Any Double Click Turbo (not memorized)
Any Triple Click Strobe (not memorized)
Electronic Lockout Hold Low

#LED and Beam

The beam is quite floody,

as could be expected with such a shallow orange peel reflector.

However a good bit of light does go forward,

so it’s useful at a distance too. By no means a thrower, but it does produce a lot of light. The OP reflector also helps minimize artifacts from the “cross” of the die.

The Cree XLamp XHP50

rests on a large centering ring, at the foot of this shallow reflector.

I don’t have any way to measure these ratings, so maybe the beamshots below will help you come to some conclusion based on a light you already own. I’ll say that this light is very bright on turbo, so it’s kind of hard to doubt the rating, particularly for the non-turbo modes.

Mode Lumens
Turbo 2500
High 1200
Medium 300
Low 50

And let me be the first to tell you, the reflector is separated from the lens by a bit of [glow in the dark]! something! I’m not sure if it’s an o-ring, or some glow paint. (Make sense for it to be a ring, but it actually glows like paint.) I love this feature. I love GITD stuff.


Flashlight 0.3s, f/8, ISO 100, CWB 5000k
Olight R50 Seeker
Convoy L6 (5000k)
Olight S1A Baton 14500 AA
Convoy C8 XPL-HI
Klarus Mi7
BLF-348 A , B
Manker E14
Astrolux S41
XintD C8 XP-G2 S4

All beamshots are at the same settings in practically the same conditions. Many are beamshots used in previous reviews: I have included them here just for fun. And I try to sort them in order of relative interest, so the most interesting light compared to what I’m reviewing here, should be next in order.

I ran some comparative outdoor beamshots, too, of semi-similar lights. I don’t have a lot of similar lights, but still maybe worth comparing. All lights are tested in the order: lowest mode to highest mode.

Camera settings were the same for all shots.

0.4 sec at f / 8.0, ISO 400 (and accidentally, AWB).

Control shot with nothing else running.
Olight R50 (4 pictures)
Convoy L6 (4 pictures)
Convoy C8 XPL-HI (3 pictures)
XinTD C8 (4 pictures)

The two C8’s aren’t really classed to the R50, but it’s interesting to compare anyway. And apologies, I had the Manker E14 with an 18650 tube for the test, but I was using it as my run-around light and completely forgot to include it. (And that’s really unfortunate - I’d slot it in after the L6 in order of ‘real comparison’, before the two C8’s). Sorry!


The manual does not seem to state this, but the back of the box is pretty clear: the light has programmed stepdowns at preset times. This would explain another thing I’d wondered about the light: the low voltage protection has seemed to kick in at different voltages. It turns out it may not be low voltage protection at all kicking in - it’s probably just a timed stepdown, which included a shutoff. That’d also explain the relatively high voltage the light turned off at. And indeed, I can’t see a place where anything mentions this light has low voltage protection at all.

These are not complaints: I find the stepdowns to be fairly user-interested. A specific way to say that is this: The stepdown from turbo does not appear to be to cheat FL1 standards. And the other modes test pretty accurately to their rating, and the stepdown from High and Turbo is to 800 lumens, a noticeable difference (and more) light than the output of Medium

So we should update the output chart with runtimes:

Mode Lumens Duration
Turbo 2500 2 min (then 150 min at 800)
High 1200 12 min (then 130 min at 800)
Medium 300 6 hour
Low 50 50 hour

And here’s the graph

from 4 runtime tests.

I ran Turbo twice because I was not really satisfied with the first one. IIRC, I moved something around (or changed the conditions in some way) on the first test. So I believe the second to be more accurate.

Turbo runtime terminated 2.86V. High runtime terminated at 3.03V.


For a 26650 light, it’s surprising thin and small. The head isn’t large, and the reflector is very shallow, so overall it’s very small!

Here’s a few pics of with some lights you maybe have

so you can size it up. And tailstanding
All those reflectors (and one optic).

##Random Comparisons….

I really do not have all that much that directly compares with the Olight R50. The nearest is probably the Convoy L6, but that’s a 2 cell light with a much bigger reflector. Anyway, here’s those side by side,

and head to head.

The L6 has an XHP70, while the R50 is an XHP50.


##What I like

  • Complete package
  • Small
  • Built-in charging
  • Charging LEDs show when charge is finished
  • Glow ring around the inside of the bezel
  • Works while charging.

##What I don’t like

  • Dual-polarity limits those who wish to in-light charge their non Olight cells.
  • Proprietary battery limitations are really anti-consumer
  • Slow charge
  • Low is not low enough. (Proper moonlight please!! yes even on this light)
  • The wall outlet adapter for the wall wart seems like an afterthought
  • Requires extremely deliberate button presses
  • No good way to carry it
  • Tint is to the greenish side

## Competitive Options

  • NItecore EC4S

#Final Thoughts

I think this is a nice little light. Like I said, my nearest competitor would be the Convoy L6, and the Olight R50 is grossly more carryable than the L6.

The R50 would also be a great starter kit as a gift, too.

##Parting Shot

The Olight R50 size comparison with Twilight Sparkle.

Wait, you got some problem with Twilight Sparkle? Twilight sparkle will fix that for you.

This light was provided for review by Olight, facilitated by Calvin at Illumn. Thanks to both!!

Noted here as needed.

Thanks for the Excellent review and lots of nice photos.

If you could charge other batteries other than olight batteries I’d buy it but not being able to is a deal breaker for me. What were they thinking??

> What were they thinking??

I’m guessing they really, really want to sell batteries.

I will say, I have a few analyzing chargers so I really almost never want to use in-light charging anyway. SO this really is not a big deal for me. I do understand why it is not liked, and I don’t really want more producers to go down that road, so I’ll argue against it and say it’s bad.

Olight is a flashlight brand. There is no reason for them to need to sell proprietary batteries. I think they just make the light engine so compact, there probably wasn’t any room for a charger in there. The tailcap is not used to house a switch, so it’s a (sorta) logical place to put the charger. Since the charger needs access to both the positive and negative poles of the battery, I suspect it was the design of the light with charger in the tail that dictated the battery design, and not the other way around. Other Olight rechargeables are even made to go in a little dock, head up. I think if they could have made the charger into the light in a way that didn’t require the ‘special’ battery, they probably would have. If they wanted us to have to buy proprietary batteries, they could have made the light to not work at all with regular 26650’s.

I agree with this. USB recharging seems to be becoming the norm for lots of manufacturers. They just put more value in the USB charge function than making it fully compatible with standard batteries. Most people who buy the light probably won’t even have more than one battery.

True, USB charging is more for the non-flashaholics. The one high-end feature that I do find useful is a USB output for charging the phone.

Thanks for the review!

Great review man! It’d be nice if there were a lower mode, but oh well. I guess that’s a niche feature.

Thanks for the great review!

I was very interested in this light but this is what ruins it for me, and pretty much all Olights for that matter. They make a bunch of great lights like this but with (IMO) crappy tint.

With all of the negative comments floating around on their CW tints you’d think Olight would offer NW versions by now, like a lot of their competition does.


For that reason I’m looking at the Acebeam EC50 GEN Ⅱ XHP70 5000k instead.