Favorite light
"I’ve had several of them and give several as gifts."



























Nitecore E4K Compact EDC Flashlight - 4 x CREE XP-L2 V6 - 4400 Lumens - Uses 1 x USB-C Rechargeable 21700 (Included) or 2 x CR123A or 2 x RCR123
The Nitecore E4K is a tiny monster packed into a compact, EDC light! With the integration of four CREE XP-L2 V6 LEDs, this Nitecore light can emit 4400 lumens in turbo mode excellent for walking at night, camping, and more. Measuring less than 5" long, this powerhouse EDC is easy to carry around in a pocket thanks to an included two-way pocket clip.
Equipped with a USB-C rechargeable 21700 battery, the E4K is capable of a 30 day runtime in ultralow thanks to the immense capacity of the battery. The Nitecore E4K functions through a large side switch designed for comfortable single-handed activation. Easy to press bare-handed or with gloves, the side switch utilizes a simple user-interface with hold, short, double, and triple press shortcuts to quickly get to your desired output. In a hurry to get to your most frequently used mode? No need to worry because the E4K has a mode memory allowing for automatic access to the last mode.
| Turbo | High | Medium | Low | Ultralow | Strobe/SOS/Beacon | |
| Brightness | 4,400lumens | 1,050lumens | 320lumens | 50lumens | 2lumens | 4,400lumens |
|---|---|---|---|---|---|---|
| Runtime | 30minutes | 3.25hours | 7.5hours | 45hours | 700hours | - |
| Distance | 211meters | 105meters | 57meters | 21meters | 21meters | - |
| Brand | Nitecore |
| SKU | NITECORE-E4K-XP-L2-V6 |
| Series | E (Explorer) |
| UPC | 6952506405657 |
| Primary Material | Aluminum |
| Max Lumens (lm) | 4400 |
| Max Throw (m) | 211 |
| Rechargeable | Yes |
| Batteries Included? | Yes |
| Switch | Body |
| Light Color | Bright White |
| Length | 4.62 in (117 mm) |
| Typical Uses | Walking |
| In the Box | Batteries, Battery Magazine, Holster, Lanyard, Pocket Clip, Spare O-ring(s), USB Cable |
| Drop Resistance | 3.28 ft (1 m) |
| Switch | Body |
| Primary Material | Aluminum |
| Max Lumens | 4400 |
| Max Throw | 211 m (692 ft) |
| Light Color | Bright White |
| Batteries Included? | Yes |
| Included Model | NITECORE-NL2150HPR |
| Rechargeable | Yes |
| Charge Style | Battery w/ Charge Port |
| Charge Connector | USB-C |
| Length | 4.62 in (117 mm) |
| Head Diameter | 1.13 in (29 mm) |
| Body Diameter | 1.02 in (26 mm) |
| Weight | 2.82 oz (80 g) |
| Length | 7.1 in |
| Width | 3.99 in |
| Height | 1.94 in |
| Shipping Weight | 0.58 lb |
| Warranty |
Nitecore 5 Year Warranty Battery Junction Warranty |
| Return Policy | Return Policy |
| Glossary | Flashlight Glossary |
Overall rating: 4.0 / 5 from 34 reviews.
The Nitecore E4K Compact EDC Flashlight offers a remarkably high output with 4400 lumens, powered by a USB-C rechargeable 21700 battery or alternative CR123A/RCR123 batteries. It features a compact design, easy pocket carry, and a user-friendly side switch with multiple modes. Customers appreciate its various settings and overall performance.
Review topics: [shipping, light, size, use, output, setting, batteries, flashlight, torch, lumens, monster, spot, hold, switch, spread, throw, level, clip, flash, button, flaslight].
"I’ve had several of them and give several as gifts."
"This has already become my go-to flashlight carry-with flashlight. The much improved switching system takes a few minutes to master but is fast after you get the hand of it. Questions: Can anyone estimate run times at different brightnesses when using CR123 batteries? What are the estimated run times for the strobe functions which I would use in an emergency in my aircraft?"
"This isn't that great of a flashlight but you do get a fancy battery with it. It's a floodlight. And the lanyard has nowhere to hook to. And the intuitive press to turn off the light actually throws it into blinding flashing mode. The two level switch operation and turning it off takes some getting used to. Current draw when off is about 150uA, which is a lot for something that should be in deep sleep but it shouldn't run down that big battery for quite a while. It would be nice if they'd included a tailswitch to fully power it off though, so it wouldn't wreck an unprotected battery. A 1/4' battery spacer is needed to use this flashlight with an unprotected battery."
"I'm somewhat of a flashlight and lighting 'nut'. I own far more than I'll ever need yet I wouldn't want to be without any of them. This the latest of a long list and it may be the best overall. It has range and impressive lighting duration at all levels of power thanks to the muscle packed 5,000 mAh 21700 battery included. It works for low light unobtrusive guidance or area orientation to bushwacking and self-defense with equal aplomb. I carry it in my pocket but the belt holder with cover is nice, too. It's a good value and another BatteryJunction. com winner."
"Great light if only it will hold a charge. I have several Nitecores and they are great lights, nothing but positive things to say about them. But this one, don't know if it's the battery or the flashlight draining it but it does not hold a charge very long. Last time I charged it, used it for maybe 5 minutes, next time I picked it up (about a month later) it was dead."
"This light (1st) was purchased for daughter living in the city and walking to work. The super bright strobe will startle any biped and allow departure. It also works for a long time on low settings for safety in walking. The only improvement would be a drilled end cap to attach the lanyard. That would make it perfect! My son got one (Christmas) too for outdoor activity and use sailing on the ocean."
"Had trouble finding where to charge the battery-not on the flashlight itself. Otherwise, a great light at a reasonable price."
"This is a fantastic flashlight to carry with you day in and day out. There's a built-in pocket clip that fits on my pocket so I have the light with me without a second thought, and I can fit it onto the bill of my hat when I need to light something and use my hands at the same time. Personally, I'm a fan of the momentary turbo function because I can use all 4400 lumens right away"
"Very bright capable but disappointed in that you must remove the battery to charge it. Makes it difficult to use mobile. Took overnight for 1st charge. Will have to obtain a second battery to use on after dark search. Overall it is OK but just OK."
"The first time that I used this flashlight was on a night job in my dump truck. The coolant light came on, so I popped the hood, checked the coolant and sensor, laid the flashlight on the hood bracket (where the hood rests when closed) then closed the hood, strapped it down and went back to work. Having forgotten the last time that I had used the flashlight, I looked all over and finally chocked it up to another high quality flashlight that disappeared or 'walked off the job' as is not unusual for me. My low end flashlights never seem to have that problem. Fast forward six months after having opened and closed the hood countless times. . . low and behold, there it is! It was all grimy, and some of the anodizing had rubbed off, but when I hit the button. . . LIGHT! This torch is durable and bright. The button is easy to find in the dark (which is important to me and not always the case with flashlights. ) I'm a huge fan of Nitecore."
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