This is the default operation of the torch, but the TS10 runs Anduril 2, an open-source firmware for torches. Anduril is completely configurable but quite complex – I could fill an entire video covering all its options. You shouldn’t let that put you off, the default operation is pretty close to my perfect user interface anyway. But if you like fiddling, I’d highly suggest reading the manual that I’ll link to down below. If you get to grips with Anduril, you can have the same setup with every Anduril torch you own. Unscrew the ring below the head to reveal the USB-C charging port. Everything is perfectly machined and there’s an o-ring to maintain its IP68 waterproof rating. I didn't notice PWM in the various brightness levels. The distance from the start of the spill to the feet is minimal. So while not quite hitting 4000 (on my sphere), it’s within the margin of error I expect with not having professional equipment, and realistically there’s almost no visible difference between 3736 and 4000. Nice! It has a nice design and good build quality and comes with a power bank feature so the USB-C charging port works both ways. Using the power bank function of the Wurkoss TS25

Pushing the mode selection button brings up a battery level meter that tops out around 4.2v, which is the Li-ion standard for max charge. Nitecore has also built over-charge protection into the T4K, as well as over-discharge protection. Given that this light has a fully internal battery, measuring amps is a bit of a silly task. But I’m going to do it anyway! That said, because the battery is soldered to the driver, I can get a clamp meter around the wires, but don’t feel good about de-soldering the battery to test that way. So what I have is the High and Turbo current readings: The torch came on at 1271 lumens in turbo, dropped to 1245 lumens after 10 seconds, 1206 lumens after 30 seconds – pretty much exactly its spec’d 1212 lumens. It slowly dropped to 487 lumens at 5 minutes and then slowly dropped to 327 lumens, where it remained constant for the remainder of my measurements. This is impressive performance for such a small torch – almost 2 minutes at over 1000 lumens.In DEMO mode (default) the light turns off automatically, within 30 seconds, if there is no operation. The countdown will be indicated on the multifunction display.

Some pictures have been adjusted slightly to depict as close as to what is seen in real life. The distance of the light from the door is 4.6m. It’s a bit on the large side for EDC suitability, but it’s definitely one of the best-performing EDC lights on the market.

Nitecore's T4K Rechargeable Light 4000 Lumens is an impressive flashlight with a number of handy settings. The light output goes from 1 lumen up to 4000 lumens. Admittedly, the 4000 setting can only be used in very short bursts but it is so bright you're unlikely to need it much. The 200 lumen setting is certainly bright enough for most tasks around camp and for general use and the run times for each of the lower settings are impressively long. https://www.nitecorestore.com/Nitecore-T4K-4000-Lumen-Keychain-EDC-Flashlight-p/fl-nite-t4k.htm(link is external) Olight doesn’t specify the LED used but it sits behind a TIR optic and the beam has a good mixture of throw and spill for an EDC torch. There’s a noticeable hotspot with 220 metres of throw and 12300 candela of intensity in turbo mode. For this light, the spill, corona and hotspot is somewhat predictable due to the TIR optics. Surprisingly, the LEDs are not covered under the TIR (Total Internal Reflection) optics. With the LEDs used, the beam is suited for recognizing items in the near to mid-range distance. There are 2 settings (DEMO and DAILY) and 2 electronic switches on the side of the flashlight – MODE button (closer to the head) & POWER button (further from the head) to operate the light.

And some longer batteries with protection circuits won’t fit, for example this Keeppower one. But I did find this Lumintop 14500 with built-in USB-C charging fits – I would have preferred Wurkkos included a battery like this with the torch – it would be far more convenient for newcomers to these higher performance torches. The torch weighs just 51.9g (1.83 oz). There’s also a status LED above the USB-C charging port of the case, that indicates the case’s battery level when you open the case and also turns green when the case is fully charged. You can use the supplied charging cable or a USB-C to USB-C charging cable. But for me it comes down to a toss up between the smaller still Fenix E18R V2 and Olight Baton 3 both with similar outputs, and I’d honestly grab either. I prefer the user interface on the Baton 3 and the charging case is great but I like the standard USB-C charging on the Fenix and the non-rechargeable CR123A battery support.This could be the gadget lover’s perfect torch. It’s pretty small and lightweight, has an insane amount of brightness, and the OLED screen makes it a joy to use. But it’s quite pricey, it has a non replaceable battery, the turbo mode is very brief, and the lower modes although well regulated are less than you get on some much smaller true keyring torches. Battery Life: Always look at the batteries the flashlights are shipped with. The larger the capacity, the longer batterylife you get. It also has multi-coloured front auxiliary LEDs that can also be configured as well as everything else with its Anduril 2 firmware. The torch head got warm to the touch at around 46°C. The moonlight mode I measured at 2 lumens which is a bit bright for a moonlight mode but not too bad. For a rechargeable flashlight that is low weight, compact but able to put out a seriously bright light then the T4K is a great option. At just 76g and capable of an output of 4000 lumens this is an impressive piece of kit.

I got the chance to test out a Nitecore T4K myself and see how it feels to carry, how easy the controls are to navigate, and how versatile this flashlight truly is. First Impressions Let’s take the light party outdoors now. I took the picture above around 9:30pm at night and the light through the trees was not noticed by my naked eyes.A maximum output of 4000 lumens (short burst) is possible from the four Cree XP-L HD V6 LEDs and the total reflective optic lens provides a soft uniform light that can shine up to 209 metres distance. The slow blinking BLUE indicators on the MODE & POWER switches depict charging in progress and solid BLUE (no blinking) indicators depicts charging has completed. Disclaimer: Light was provided for by Nitecore (manufacturer) for this review. No other compensation was provided. Brightness: You should also look at the brightness of the flashlight. The lumens listed will give you an idea of how bright it will be. For general use, a flashlight with 100-300 lumens should be enough, but if you think you need more, 1000-2000 lumens is probably enough.