For the last couple of years, my keychain flashlight of choice has been my Olight silver 120 lumen i3E EOS. I like that it’s one mode, and the silver (probably chrome) finish has been almost scratch free even though it’s been rubbing up against keys all the time I’ve owned it.
If you need K1
Manker LAD
battery dies within 3 months/ 3 times recharging. Love the light but it’s no good.
The UltraTac K18 has been my go to keychain/pocket clip edc for quite a while now. Ended up with 2 of them, because they are fantastic either with a AAA or a 10440.
Astrolux K1, stainless steel which is very wear proof. XP-G3 + 365nm uv + red , multifunctional. But it is kind of heavy compared to TIP.
Recently bought a Wuben Mini Keychain (10180 battery). Great little twisty light (2-mode). Rechargeable, 130lm.
Anyone know how much brighter those little photon lights are compared to the cheapo $1 button led’s?
Some more names (sorry if they were mentioned above)!
- Klarus Mini One
- Klarus Mi6
- Palight Z3
- DQG Hobi
- DQG Brass
- Jetbeam Mini-1
- Wuben ( Several mini lights for keychain, with different models: https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20180203073937&SearchText=wuben+mini )
Some lights from AliExpress around 15€ (some are less than 15€, and most are “unbranded”) (non-affiliated links):
Lovin’ my Nitecore TIP 2017 (i put a 219C in it).
Also love my Astrolux M01 (after fixing the flickering problem: replaced the e-switch thingy with a tiny piece of sheet metal…) which is a true keychain light, it’s on my key ring.
Lumintop ED10
I have a Wuben G337 on my keychain I got for ~$10. I don’t use it that much, because I usually have a UT01, or a SP10b on me, too. But it’s there when/if I need it. Runtime and brightness are both impressive for something so tiny, and I can charge it from any micrUSB cord.
I’m pretty sure it shares the same charging circuit and 2 level resistor ballasted “driver” as many of the other similar tiny lights.
I got a couple of these Glaree E03 150 lumen AAA lights a few months ago on amazon, they are $7, sometimes on sale for $5, 3 modes + a strobe, pretty good light for the price
Nitecore TIP and Ultratac K18. Very happy with both
Olight i1 XM-L, Olight i1 SS XM-L (with itp A1 head ), iTP A1 SS (with Olight i1 head), Olight i2, Olight i3, iTP A3, iTP A3 titanium
From the above, I think only Olight i3 is still available
Zanflare F6s
Just went through the washing machine unscathed, no fog in the head or water in the body, no scratches and working perfectly despite my stupidity
Yeah, I got quite a few of those, too. 
Nice, lightweight, bright for an AAA, no quirks like NMM, just a nice straightforward light.
Astrolux A01 / Manker Boney — Essentially the same, the A01 had quite a few with NMM, but mine doesn’t (gray). The Boney is I think 1-mode only, which I’d probably prefer.
Odepro EA01 — Really nice simple elegant light. Got one to review, ruined it with a f’n alkaleak. Discontinued… just my luck. Contacted the nice folx at Odepro (hi Jenna!), scored me another one for <10bux.
Lumintop AAA Nichia — Beautiful light, sturdy, well-built, but annoying UI that insists on always starting on M, and no memory. Sorry, but I’d rather have a 1-mode donk that was permanently stuck on medium, than a light with modes that always comes on on medium vs having memory or starting on low so you don’t blind yourself at night
Zanflare F3 — Just got one today, impressed! Typische Zanflare elegance (eg, “spline” knurling like the F1), good mode spacing with a new AAA (didn’t try yet with an eneloop), firm switch that oozes “decisiveness”, ie, ain’t mooshy at all. A bit too cool-white for my taste, but still a nice light.
Already mentioned the Glaree, also a nice simple light, thinwall tubing making it really lightweight, probably would be a great zipper-pull on a jacket. Nowhere nearly as “hefty” as the Zanflare or Lumintop. (Neither is good nor bad, just depends on what you want/need/expect of the light in question.)
Gotta mention the Jetbeam µ, ’though I ain’t got one. Lotta people like it.
Wow… and I usually crap on AAA lights as “better’n nothing… but not by much”.
Nicron
was $9.70 when I bought including 16340 battery