Nitecore E4K 4400 Lumen EDC Compact Rechargeable Flashlight with LumenTac Organizer

Product Information

This light feels rather well balanced in a medium sized hand (not head/tail-heavy). Switching between overhand and underhand holding method is easy with its form factor. The knurling on the light enable it to be sufficiently “grippy”, even with wet hands/gloves.

This light REALLY puts out some lumens, if briefly. I like the big switch, too. I don’t care for the UI one bit, but this one’s recycled from another light where I didn’t like the UI, too. Long Review The Big Table Nitecore E4K FlashlightAround 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.

All of this and it’s small enough to fit in the palm of the hand, measuring less than 12cm in length. It’s quite chunky, with a head diameter of 2.8cm and tube diameter just slightly smaller at around 2.6cm. At the rear we find the D-ring at the top and centrally a double loop, one of which is tear-off. Once inserted into the holster, the E4K remains firm. 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.Good interface of use, even if you need a few minutes of learning, and well-spaced available levels (complete with memory) also considering the possibility of direct access to the The Nitecore E4K has electronic protection against reverse polarity. The only unscrewable part of the Nitecore E4K is the tail cap. On the tail cap the rhombic knurling is similar to that seen on the torch body.

Although a 21700 lithium-ion battery is recommended, the E4K can also two 16340 (RCR123A) lithium-ion rechargeable batteries or two CR123A lithium metal non rechargeable batteries using the included battery adaptor that makes the batteries compatible, which provides great versatility. The turbo output cannot be accessed when using 16340/CR123A batteries. The fairly straightforward UI with direct access to ULTRA-LOW, STROBE OR TURBO from OFF (depending on DAILY or TACTICAL mode selected), option to switch between DAILY or TACTICAL modes, faster USB-C charging capability, included high capacity non-proprietary 21700 USB-C charging battery, option to use other 21700 battery (those capable of providing 15A continuously), battery capacity indicators, high output in a relatively small form factor and inclusion of CR123A Battery Magazine are all plus points for this flashlight.The Nitecore E4K is newest flashlight from the E (Explorer) Series and it has been quite awhile since the E Series has been updated with a new model. There are tint shifts throughout the beam profile. The hotspot is cool white whilst the corona possess a slight yellowish-green tint; and the spill having a slight purple tint. Nitecore did not disclose the tint (color temperature) and/or the CRI (Color Rendering Index) for the LEDs used in their light. For this light, a guesstimate would be in the 6500K and 70CRI ballpark. has a duration of over 3 hours as per Nitecore specifications. Another advantage, which is being lost in recent times, is the possibility of using different batteries to operate the E4K.