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

Product Information

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. Olight Warrior Mini 3 (new model): UK: https://www.olightstore.uk/s/DS85DL US: https://www.olightstore.com/s/6QEQ5S

This is actually quite tough. On one hand, it’s quite a decent flashlight that can put out a wall of light, albeit not for very long. On the other, it’s essentially a fairly large 200 lumen light, taking the turbo burst out of consideration.I measured the colour temperature as a cool 6507K but with a very neutral tint and a decent CRI of 70. A tiny OLED display on the unit’s face shows lumen values, mode setting, and time until the battery needs a top-up. This useful little screen takes the guesswork out of which mode you’re using. Additionally, having at-a-glance info on charge is helpful to avoid unexpected dead batteries. I didn't notice PWM in the various brightness levels. The distance from the start of the spill to the feet is minimal.

Nitecore did not disclose the tint (color temperature) and/or the CRI (Color Rendering Index) for the LED used in their light. For this light, a guesstimate would be in the 6500K and 70CRI ballpark. With the torch on holding the side switch turns on strobe, a single press turns it off. All modes are memorised – and you can tap the tail switch to momentarily turn the light on until you let go.

What I like

This has been fine on my keys, but does weigh 10g less albeit with a fraction of the performance and no USB charging. I think you could still get away with this on your keyring in a pinch even though that’s not its intended purpose. The torch comes with a USB-C charging port, enabling convenient charging through various USB power sources. It also has a power bank function, allowing users to charge other devices on-the-go using the torch's battery.

There are tint shifts throughout the beam profile. The hotspot is cool white whilst the corona possess a slight yellowish-green tint; and most of the spill having a slight yellowish-green tint. The magnetic charging cable snaps onto the magnetic tailcap of the torch with a full charge taking up to 3.5 hours. The LED on the charging cable changes from red to green when fully charged. I did find this often turned green a little early – but it still continued to charge slowly. Out of the box, the light will come into Demo mode. This mode is the same as Daily mode, but with the difference that the light will only stay on for 30 seconds after the last mode change. Turbo can still be accessed as per Daily mode, but more on that later.And the magnetic tail cap, mostly intended for snapping to the charger, is also just about strong enough to hold the torch in any orientation for hands free operation. 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. When the battery voltage is less than 3.4V, the charge indicator located below the two buttons will start to emit a blue light intermittently every 2 seconds to inform the user that the battery must be recharged as soon as possible. The display warns us of the “ LOW BATT” low battery.

When turned to its maximum settings, the flashlight’s beam throw is 209 meters and its luminosity is 4,000 lumens. Four powerful LEDs provide the light, each with its own smooth reflector to maximize beam throw and intensity. The torch has a Luminus SST-40 LED behind a TIR lens and has a decent maximum throw of around 146 metres, or 5397 candela.

This unit is ridiculously bright when in Turbo mode, and it’s not surprising that Nitecore included a warning in its documentation about shining this light into someone’s eyes. RCR123A 16650 18350 18500 18650 21700 26650 AA AAA AceBeam CountyComm CR123a Custom Cyansky Deadwood Deadwood Custom Works fenix fidget First-Light FiTorch Folomov Foursevens Freasy Gears Imalent Jetbeam Klarus Malkoff Maratac Nitecore Nitefox OLIGHT Pen Power Bank prometheus lights Proprietary Battery ReyLight RovyVon Schmidt sofirn Streamlight Sudio Weaponlight Wuben XTAR Archives There’s a few torches that didn’t make this top ten but deserve a mention. The Olight Baton 3 Pro is the most compact 18650 torch I’ve tested and almost the perfect EDC torch. Olight Baton 3 Pro (natural white version) in turbo mode