Nitecore T4K Rechargeable Torch 4000 Lumen Turbo Super Bright Small Flashlight, Protective Case Included

Product Information

Under the OLED display there are the two electronic switches with which we will manage the NitecoreT4k. The two switches are protruding and provided with LEDs under the buttons. As can be seen from the symbols above these, one has an ON/OFF function (Power Switch) and with the other we will vary the 4 levels available beyond the momentary Turbo (Mode Switch). Like the Fenix E18R V2.0 these modes are very well regulated and my measurements confirmed Olight’s specs with constant outputs up to the 300 lumen high mode. Turbo turned on at an impressive 1310 lumens, was still at 1299 lumens after 10 seconds, 1282 lumens at 30 seconds, and pretty much as spec’d dropped to 290 lumens after 90 seconds where it remained at 5 and 10 minutes and for as long as I measured its output. I measured 1778 lumens at turn on, 1765 after 10 seconds and 1727 lumens after 30 seconds. Almost exactly the spec’d 1750 lumens. It held over 1000 lumens for a couple of minutes before dropping to around 466 lumens after 4 minutes which is maintained for the remainder of my tests. And again pretty much as spec’d.

I’ve also measured their colour temperature and accuracy with a spectrometer – if you’re using a torch for longer periods of time the quality of light is also important.Note all beam shots were shot with the exposure fixed and at 5000K colour temperature. 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. Disclaimer: Light was provided for by Nitecore (manufacturer) for this review. No other compensation was provided.A rubber flap covers the USB-C charging port and it charges the supplied battery in around 80 minutes. All my top ten torches that have USB-C charging charge with both a USB-C to USB-A and USB-C to USB-C cable so I won’t specifically mention this from now on.

Without further ado let’s start with the lightest torch in the roundup and work up from there. Wurkoss TS10 Note: By being in DEMO mode and reactivating the flashlight within 3 seconds after turning it off, you will have temporary access to DAILY mode until you turn off the flashlight again. The runtime test was done with the fully charged Nitecore T4K in HIGH mode (200lm), with an ambient temperature of about 21 ° C and without forced ventilation. Good durability in HIGH which reflects the values declared by the house. As you can see from the graph at the end of the test, the T4K suddenly turned off. When switched on again the display showed 3.20V.Switching ON the flashlight within 3 seconds after the 30 seconds, will put the flashlight into temporary DAILY mode until switch OFF. For this light, it is a definite YES, if the tint shift and beam profile are not an issue for your usage. I didn't notice PWM in the various brightness levels. The distance from the start of the spill to the feet is minimal. With the flashlight on, the screen will show the various information in sequence: brightness level, lumens and user mode ( Demo or Daily) and then the time remaining before the battery runs out. To reactivate the display just press the “MODE” button. I also tested the Thrunite T2 which runs off the larger 21700 battery but is still very compact. Thrunite quote a 3757 lumen output although I measured a fair bit lower at just under 3000 lumens, still very powerful for its size. Turbo output from Thrunite T2