One of my hobbies is high-performance flashlights, SureFire, Novatac, HDS, Pelican, Streamlight, etc, lights that are both smaller than a 2 D-cell Maglite incandescent, and more powerful
many of these lights use “exotic” and “expensive” batteries, like the CR123a 3V Lithium camera battery, but thanks to the incredible advances in the high-power LED field, it’s possible to get 1 and 2 AA flashlights capable of 100+ lumens (the 2-D Mag puts out 15 lumens on fresh batteries, but output rapidly drops after the first 10 minutes or so)
one of the popular keyring lights is the Arc AAA-P, a single 5MM LED flashlight, that runs on a single AAA battery, and produces approx. 10 lumens (almost as much as the big Maglite), and it has a much better beam quality
for a while, the AAA-P was the gold standard of AAA flashlights (it still is), It’s made in the USA, it has mil-spec Hard Anodized coating, internal ChemKote coating to resist leaking batteries, and it runs for approx 5 hours in max. brightness mode, then another 5 hours or so of reduced light, total runtime is around 10 hours, give or take, on an alkaline battery
the price for this marvel of compact engineering is $45ish
Another manufacturer, Fenix, based in Shenzen, China, has released a similar light, the E01, it’s slightly larger than the Arc, about the length and diameter of a AA battery, puts out 10 lumens, but it has a much longer runtime on alkies, 20 hours total, 10 hours of ruler-flat regulation, and 10 hours of reduced light, it’s build quality isn’t as polished as the Arc, it’s not bad, but there is a noticeable difference in fit-and-finish
Last night, I decided to perform an impromptu runtime test, with the lowly Carbon-Zinc battery, I put a fully charged C-Z battery in each light, and turned them on;
the Arc went out 10.5 hours later
the Fenix is still emitting usable light, it’s very dim now, you can see the bond wires going into the LED die, but it’s still putting out enough light to read by when your eyes are dark-adapted, it’s been approx. 16+ hours, the battery’s putting out around .35V (starting voltage on both cells was 1.65V)
Carbon-Zinc batteries are very poor performers in high-drain applications like LED flashlights, and they generally have the shortest runtime of the three common primary battery chemistries (Carbon-Zinc, Alkaline, and Lithium), alkaline is a good midpoint, and Lithium AA/AAA cells have the longest runtime of the three (the Fenix’s factory estimate is about 35+ hours runtime on a Lithium)
So, the Fenix E01 is being put in my wallet, just in case, so I always have a light with me, both the Fenix and Arc are so small that they can go unnoticed on a keyring, in a wallet, or a purse, yet they’ll be there when you need them, and they have enough runtime to get you through any potential short-term disaster
I have an Arc on my keyring that’s used as my keyring light, but the Fenix will be my ultra-long-runtime “WTSHTF” light
So, what tiny, helpful tools do you carry, and reccomend everyone to carry at all times?
for me it’d be;
Light (I have the Fenix E01in my wallet, and the Arc AAA-P on my keyring)
Fire (I carry a Brass “Armor” Zippo lighter, even though I don’t smoke, just nice to have a source of fire handy)
cutting tool (Victorinox Midnite Minichamp Swiss Army Knife on the keyring)
Signaling device (the outer case of the Zippo works great as an impromptu signal mirror)
this way, even if I forget to pack my normal EDC stuff, I still have something on me, as long as I’m dressed, I have my wallet and keys with me, so I’ll have my flashlights and my SAK
and, of course, a…
Towel