Nitecore E4K 4400 Lumen EDC Compact Rechargeable Flashlight with LumenTac Organizer

Product Information

When one of the special modes is active, briefly press the power button to exit the special modes and turn off the light. There is a lot of great engineering in the Nitecore E4K, the unibody is rugged yet tactile, having been CNC machined from aluminium which makes it light, tough and able to dissipate heat well. Batteries Required: 1 x 21700 15 A lithium-ion (included) or 2 x CR123A lithium metal / 2 x 16340 lithium-ion (not included) 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. Press – Direct access to STROBE; HOLD to activate SOS & HOLD again to activate BEACON (cycles STROBE-SOS-BEACON ⇒ STROBE-SOS-BEACON), 1 Press again to switch OFF light.

sudden brightness that settles at 24 seconds on 3040cd. The autonomy with the 21700 5000 mAh battery is truly remarkable. The threads and o-rings were well lubricated. Threads were rather smooth and clean (no gritty feeling at all). Around the button we find, from on both sides, the cooling fins are not so deep. Under the rubber of the side button (power indicator) LEDs show the remaining battery charge.ATR (Εξελιγμένη ρύθμιση θερμοκρασίας). Είναι μία ευρεσιτεχνία της NITECORE με αριθμό ZL.201510534543.6 The throw distance refers to the maximum distance at which the flashlight can effectively illuminate an object or target. The stated throw distance typically indicates the point at which the brightness falls below a specified threshold, such as 0.25 lux. The candela per lumen (cd/lm) ratio can be used to determine if a flashlight has a spot or flood type beam. Well-focused spot beams can be over 100 cd/lm, tactical flashlights are typically between 20-100 cd/lm, and work lights are less than 10 cd/lm. Software Modes For this light, the spill, corona and hotspot is somewhat predictable due to the 4 fairly shallow overlapping Smooth Reflectors, similar in design as the Nitecore i4000R model. With the LEDs used, the beam is “throwy” for recognizing items in the near to mid-range distance, with the sheer output it produces on TURBO. Cree LEDs are commonly used in a wide range of lighting applications. Their products are trusted by lighting professionals and have gained a strong reputation for quality and performance. The choice of color temperature depends on the specific lighting application and personal preferences. The E4K uses a smooth reflector. Unlike the textured surface of an orange peel reflector, a smooth reflector has a polished, mirror-like surface. The new design of the popular headlamp provides dual primary lights; a spotlight and floodlight. The dual primary lights can be used together or independently, achieving the ideal combination of long distance throw and flood beam. In addition, the NU25 hasa red light for map viewing, emergency use, stargazing, wildlife observation and night photography.

That said, it would be nice if Nitecore is able to speed up the ramping of modes changing duration, for future models with similar UI. Measurement disclaimer: Testing flashlights is my hobby. I use hobbyist-level equipment for testing, including some I made myself. Try not to get buried in the details of manufacturer specifications versus measurements recorded here; A certain amount of difference (say, 10 or 15%) is perfectly reasonable. This 915 measurement is just after the stepdown. The light does hit the rated 4400 lumens and much higher, but not at 30 seconds, unfortunately. What’s Included

£88.95

The first test was made by placing the Nitecore E4K in " TURBO" mode (4400 lumens). After about 21 seconds a descent takes place Dimension: 117.56mm (length) x 28.6mm (head diameter) x 25.8mm (body diameter) x 28.1mm (tail diameter) Also when we insert the battery and close the tail cap, the power indicator under the switch will flash to show the battery voltage (± 0.1 V). The Runtimes were done indoors with an ambient temperature of around 18 °C using the 5000 mAh Nitecore 21700 battery in equipment. High doesn’t have this massive stepdown, though, and holds over 1200 lumens for just under 2 hours!