Author Topic: Olight S1A and S2A review  (Read 771 times)

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Offline rookiedaddy

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Olight S1A and S2A review
« on: November 12, 2016, 11:15:22 PM »
(note that this was written a couple of months ago and posted in other forums, hope it's not too old a content to share)

Received a unit of S1A and 4 units of S2A from Olight for testing and review. I was very surprise to receive all 4 colors of S2A for testing as they are the same and only different in the silicone grip color.


Among the S2A, 3 of them, Blue, Yellow and Gray silicone grip are coated with Glow in The Dark material.

more on that in a just a bit.

Knowing that S1A supports 14500 LiIon Rechargeable battery, I bought a few Olight branded 14500 along with couple of Olight branded Lithium Primary batteries for testing.



Let's have a look at the packaging. First up, the S1A.








Contents of S1A package, user manual, lanyard with threading pin (very thoughtful of Olight for doing this), Olight S1A flashlight and a Primary Lithium battery.

so, can't find the battery?

here! A Lithium Iron Disulfide (LiFeS2) Primary battery is pre-installed in the flashlight unit.

remember to remove the insulating film before using, or if you are like me, you will put away that Primary Lithium battery for safe-keeping and reserve them for TEOTWAWKI (in the unlikely event that I somehow survived) or any potential Zombie Apocalypse (again, in the unlikely chance that I don't become one of them).

I'm in the opinion that Olight should re-word where-ever and whenever they reference Lithium Iron Disulfide (LiFeS2) battery, instead of using Lithium Iron, they should just say Primary Lithium battery.

I'm glad that Olight chooses to include a Primary Lithium battery instead of Alkaline battery. I've seen other flashlight manufacturers that include Alkaline battery in the package, and after being on the shelf for some time, the Alkaline battery leaks. Yuck!

The TIR optics and magnetic tailcap. You can remove the magnet if you want to, and you should if you see yourself EDC-ing the S1A along with diskettes and/or cassette tape.  ;D


ok, here is the positive contact nipple located inside the flashlight body towards the head, looks kind-a sexy doesn't it?!


The switch-side of Olight S1A


Tailcap, flat, sturdy flat, tail-stand sturdy flat.


The clip, removable, pocket friendly, as long as your pocket are not made of thick fabrics, I mean those really, really thick, thicker than 0.5cm fabrics. it's reversible too, for head-down carry or if you fancy getting poke in your pocket.


Here we have 3 lights for length comparisons, from top, S1, S1A and S2A.


and comparing the length of S1A to various battery sizes.


about battery fitment, I only have a few 14500, namely just Olight and AW IMR, so YMMV. here are a few pictures showing the tail end after different battery inserted into the S1A flashlight.

Using Olight 14500 LiIon Rechargeable


Using Olight Primary Lithium battery


Using AW IMR 14500 battery


Next, let's move on to Olight S2A.






Like the S1A, what's included is user manual, lanyard with threading pin, Olight S2A flashlight and 2 Primary Lithium batteries.

Some claim that the rubber o-ring that is holding the flashlight securely in the package is actually the spare o-ring, well, I know I ain't gonna use that as my replacement o-ring. Just saying.

see below the 2 Primary Lithium batteries that's included inside the flashlight. Remember to remove the insulating film before use, or put the batteries away for safe-keeping... you know, just in case...


this is the tailcap of Olight S2A, the first thing you'll notice missing from S2A is the magnet, S1-series, S2-series, and S1A all have magnetic tailcap, but not S2A. Manufacturer gives reason that the head of S2A is heavier, hmmm...


spring contact for battery positive terminal. both S1A and S2A have the battery positive terminal pointing to head compare to S1 and S2 model where battery positive terminal is pointing to tailcap.


Let's see some colors of S2A.


Closing up on the silicone grip.


Compare the grip with Fenix TK20.


The switch on Olight S2A.


The switch boot on S2A is translucent, lights get to pass through the switch boot

The brighter the level you choose, the more lights get passed through. I don't see any light on the switch boot when using moon mode, must be too dim to shine through.

Comparing the bezel of S1A and S1.


Comparing the bezel of S1A and S2A.


The diameter of S2A is slightly bigger than S1A.


Now, let's go back to those GiTD silicone body grip on the Olight S2A, only available with the Blue, Gray and Yellow model. Olight says these are fluorescence material, that they are not. These silicone body grip is quite dull, and when a UV light is directed to them, it doesn't give the "fluorescent glow". These are actually "phosphorescence", what we commonly referred to as Glow-in-The-Dark (GiTD).

Immediately after being activated by a UV light source.

the square piece is a GiTD sticker paper bought at Daiso, you know, the equivalent of a dollar stores.

After a minute.


After 5 minutes.


After an hour.

well, you could probably still pick up a very very faint glow with your night adapted eyes, but not me.

Now, let's get on with the mode switching, I've created a few horizontal cross functional flowcharts, hopefully it explains some subtle differences between the UI of new S1A, S2A and the older S1 and S2-series.

First, let's look at the S1A.

S1A and S2A now remembers both moon mode and turbo, even when turbo is access through double-click. The older S1 does not remember moon mode and if turbo (or max mode) is access via double-click, the older S1 does not remembers it unless turbo is activated via the normal mode switching (press and hold).

next, the S2A.

the UI is the same as S1A.

They have also shorten the time delay between mode changing when doing press-hold, it's now much faster to change mode on S1A and S2A than the S1 and S2-series.

let's take a look at the UI of the older S1 Baton.

as pictured, the moon mode and Max/Turbo mode (when activated via double-click) will not be remembered.

having trouble with the chart? no worries, just bring a bar of dark chocolate and a bottle of Sweet Madeira wine and we can indulge ourselves in the delicacies of the elusive Olight S1A and S2A UI.

now, on to some output test, but first, the way Olight specify their light output deserves some praise. it clearly states the output and the gradual step down brightness and runtime in the user manual.
first, charging my Olight 14500 battery in the Pila charger for the test.


time for some outdoor beam shots. here are the participants.


all pictures taken with manual mode on Sony RX-100, ISO-400, F/3.5, Exposure 1s, more lights are spill to the sides and is actually brighter in real life compare to the beam shots. But if the light pollution rate continue to rise, this might well be the true output captured in the near future.






























In conclusion, both S1A and S2A are good flashlight from quality manufacturer. These are flashlights (torches for some of you) that deliver very good runtime and performance. These are serious lumen for the money.

Well, of course it's not without its fault... for one, if only Olight can gives us a flashlight that can be charge wirelessly with High CRI lumens at half the price? you know, like those in the Star Gate Universe? One can continue to wish... and dream... oh well...

Offline NorthernHarrier

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Re: Olight S1A and S2A review
« Reply #1 on: November 13, 2016, 12:12:18 AM »
Great review!  Thanks for the info!   :)
I went to the store to buy batteries - but they weren't included, so I had to buy them again.  -- Steven Wright

Offline rookiedaddy

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Re: Olight S1A and S2A review
« Reply #2 on: November 14, 2016, 11:46:20 AM »
Great review!  Thanks for the info!   :)
Thank you for the kind words. Currently testing the H1 Nova and R50 Pro, should be able to share my thoughts in next couple of days.  :)

Online JohnnyMac

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Re: Olight S1A and S2A review
« Reply #3 on: November 19, 2016, 07:10:16 PM »
Great review, brother!  Loving the UI diagrams you made.  Very cool!  Yeah, the Olight S1/S2 series of lights are fan-damn-tastic little lights!

Offline rookiedaddy

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Re: Olight S1A and S2A review
« Reply #4 on: January 10, 2017, 11:19:19 AM »
Just finish a runtime test of the 0.5 lumen moon-mode for S1A... using a fresh Olight Lithium AA battery...

Starting Voltage: 1.83V
Ending Voltage (after rest): 1.03V
Runtime: ~24.8 days
Manufacturer's Claim: 25 days