Welcome back! We saved your shopping cart for you: View Cart

JETBeam KO-01 Outdoor USB Rechargeable Flashlight - CREE XP-L LED - 1080 Lumens - Uses 1 x 18650 or 2 x CR123As

JETBeam KO-01 flashlight left side angle
Side profile for JETBeam KO-01 flashlight
Back left side angle for JETBeam KO-01 flashlight
Close up of LED on JETBeam KO-01 flashlight
Close up of micro-USB port for JETBeam KO-01 flashlight
JETBeam KO-01 flashlight in hand
Accessories for JETBeam KO-01 flashlight
Packaging for JETBeam KO-01 flashlight
JETBeam KO-01 flashlight left side angle
Side profile for JETBeam KO-01 flashlight
Back left side angle for JETBeam KO-01 flashlight
Close up of LED on JETBeam KO-01 flashlight
Close up of micro-USB port for JETBeam KO-01 flashlight
JETBeam KO-01 flashlight in hand
Accessories for JETBeam KO-01 flashlight
Packaging for JETBeam KO-01 flashlight
Click to Enlarge Image
Usually ships the next business day
This item is Discontinued
Battery Junction Wholesale Account Signup
Battery Junction Free Keylight On Purchases Over $20 Promo

JETBeam KO-01 Rechargeable Flashlight

Experience the power of 1080 lumens!

JETBeam's KO-01 Tactical Flashlight uses a high lumen chip to deliver up to 1080 lumens on 2x CR123A Li-ion battery. JETBeam developed custom alloy reflectors for overall improved performance. The KO-01 includes a USB charger for charging 18650 batteries used with the KO-01 Survival Rechargeable Flashlight. The flashlight also comes with 2 O-ring replacements.

Construction Excellence

Powerful CREE XPL LED Chip

The CREE XPL LED Chip separates competitor flashlights from the KO-01 Rechargeable LED Flashlight, improving max output and energy usage. JETBeam builds custom alloy reflectors based on the CREE XPL LED Chip's specifications to produce the best possible lighting experience for customers. With a max LM/W of 200 for a single chip, the KO-01 Rechargeable Mini-flashlight delivers high performance with optimal battery life.

Everyday Power

Fits All Needs

The JETBeam KO-01 Compact LED Mini-Flashlight uses superior craftsmanship and LED technology to create a high-quality flashlights for use in a variety of professional fields. Military, law enforcement, and Special Forces benefit from the use of high-powered flashlights, like the KO-01, boasting up to 1080 lumens of brightness and 250 hours on the lowest setting. With rechargeable capabilities, it is a durable LED flashlight that will last a very long time.


  • CNC machining used to produce strong body
  • Premium Type III hard-anodized casing
  • U-shaped tail switch
  • High Lumen CREE-XP-L Chip
  • Electric separation technology conducts heat evenly for improved performance
  • Custom-designed alloy reflector for high efficiency
  • Anti-reflective coating for ultra-clear, mineral glass lens
  • Circuit designed with efficient power management for max runtime of 100 hours
  • Single-touch button technology cycles through 5 lighting modes
  • Flash indicator on power button denotes battery life
  • USB-charging capabilities if using an 18650 battery
  • Built-in memory function instantly returns the output to the last used mode
  • Accessories:
    • Spare O-ring
    • Spare Side Switch Boot


  • Weight: 0.2 lbs.
  • Dimensions(LxWxH):5.0" x 1.0" x 1.0"
  • Impact Resistance: 1.5m
  • Waterproofing: IPX-6
  • Power: 1x 18650 Rechargeable or 2x CR123A
  • Max Beam Distance: 174m
  • Peak Beam Intensity: 7540cd
  • LED: CREE-XP-L Chip
  • Output Mode/Runtime(Same for 18650 or CR123A unless otherwise noted):
    • Turbo: 1080 lumens/1 hours (2x CR123A battery) / 960 lumens/2 hours(1x 18650)
    • High: 240 lumens/7 hours
    • Medium: 75 lumens/30 hours
    • Low: 1 lumens/250 hours
Runtime (Hours):12730250
Compatible Batteries:1 x 18650, 2 x CR123A
Batteries Included:No
Included Accessories:Spare O-ring(s), USB Cable
Flashlight Usage:Every Day Carry
Throw Distance (Max):174m
Switch Location:Body
Product Certifications:IPX-6
Warranty:Battery Junction 30-Day Warranty, JETBeam 2 Year Warranty
Return Policy:Battery Junction Return Policy
Primary Material:Anodized Aluminum
Product Weight:3.2oz
Product Dimensions:1" (L) x 1" (W) x 5" (H)1" (Head Diameter)
Country of Origin:China
By Stu F.
Outstanding value, excellent design
December 7, 2016
I bought two of these during this year's Black Friday sales event, and as soon as I received them and played with them for a day, came back to buy two more to stash in toolkits and glove boxes.

The advancement in LED lighting and battery technologies has really led to some stunningly efficient modern lights, and the Jetbeam KO-01 is one of them. I've got old school 5D- and 6D-cell Maglites with the single LED TerraLux conversion, and the KO-01 (in the middle two settings) is brighter than the Maglites (not surprising, as the conversion is rated at 140 lumens), has a better beam pattern, weighs about 1/10 of the Maglites and runs longer to boot. In the highest setting, the KO-01 beam is competitive with winter sunshine, and easily overpowers typical indoor lighting. In the lowest setting, the KO-01 seems practical for use without waking nearby sleepers, about like a strong nightlight; the specs claim 1 lumen in the lowest setting, but it must be substantially more powerful than that. I'd guess more like 20 lumens. Overall, the four brightness settings are very usefully spaced. For any purpose except baton work, this little Jetbeam is clearly superior to the Maglites. It should go without saying that the KO-01 is also superior to CR123-powered LED lights of even just a couple years earlier.

The KO-01 has a really deep fixed-focus parabolic reflector that provides a nice uniform spot with a well-defined larger outer area. I think (but have not tried taking it apart to verify) that the front lens also has some optical properties other than "flat cover glass". The outer area is not as broad as the Maglite outer area and has substantially more usable light in it. Color is reasonably good with a slight yellow tinge to the central spot and a blue tinge to the periphery of the outer area of the beam. Overall, it's a "daylight" white, and much nicer than the heavy blue color of lights from a few years back.

Design and construction seem very well done. The head, the body and the tail are separate machined aluminum pieces, with the threaded joints sealed with O-rings. The rings came pre-greased, which is a nice sign. It's quite sturdy without being the least bit clunky. Easy to hold with effective no-roll machining for when you set it down. Tail stands nicely. Intelligent (if trivial) provision for a lanyard which won't interfere with tail standing.

The one head-side button has a sensible control pattern for cycling through settings, with last-setting recall from off. You need to hold the button for about 1/2 second to turn it on or off, a momentary "click" won't do. When on, a click cycles through the settings, When off, a click does nothing. You won't like this light if you require a tail-end button.

The USB recharging feature for 18650 batteries seems to work just fine. The power-indicator (hidden behind the button) also indicates when the battery is recharging and goes out when it's done.

The one feature that I don't think was done very well is the strobe, which is far too fast. It's fast enough to be called a flicker, and would be much more effective at dazing someone or for signalling if it were substantially slowed down.

Other than some very minor stylistic differences, I don't know what the difference is between the Jetbeam KO-01 and Jetbeam DC-R20. From the published specs, they look equivalent, although perhaps they use different Cree LEDs? KO-01 is currently $20 cheaper.
By R H.
North Texas
Intuitive control, compact EDC light
September 30, 2016
I'm an EMT on the night shift so my flashlight is an important piece of equipment. I chose this JETBeam KO-01 for its very broad range of output as well as the long life of the rechargeable 18650 battery. I've had multi function lights before and didn't like how I had to cycle through every power setting to get to the one I needed. This JETBeam model remembers the last setting while also providing a very easy short cut to get to its brightest output. In my work, I prefer to start with the lowest output since I may be inside a darkened bedroom or right in front of my patient. But if I'm outdoors, I may be managing patient care, wrangling the stretcher etc. so I want an easy way to get to my brightest output without a bunch of fiddling around. A quick "double tap" on the power switch takes the light from it's previous setting (in my case, the lowest) to the "turbo" setting. Very handy!

FYI: I realize that the marketing people needed over 1,000 lumens for bragging rights but really, the 240 lumens setting is more than enough for me.

Engaging the strobe is also quick and simple: Once in the "turbo" mode, another double tap and you have a disorienting tactical strobe (or a great way to get the attention of other responders on a scene).

I was pleasantly surprised at how much I would appreciate the recharge function. If I use my light quite a bit on a scene, I just "top it off" with my cell phone charger when I get back into the ambulance. It charges pretty quickly.

I would have gone 5 stars on this one but the power switch has two drawbacks: 1. It can turn on while in my pocket and 2. Good luck finding the power switch if you're wearing cold weather gloves. I plan to add a pair of "bumps" on either side of the switch using JB Weld. This should prevent pocket activation as well as give me a tactile location of the switch without me having to look at it.

Besides a more tactile control switch, I would love to have a beam focus option for spot lighting but that's not a deal breaker. This light could also benefit from a clip so I could hang it on my shirt or ball cap but again, that's not a deal breaker.
  • * Easy to select power levels
  • * Excellent run time on a single charge.
  • * Built in charger is handier than I had expected.
  • * Flat bottom tail cap allows light to be used like a candle.
  • * Just the right size for a pants pocket.
  • * Might turn on inside pants pocket
  • * Difficult to find the power switch with gloves on.
By Scott
User Interface - just doesn't work intuitively for me....
August 30, 2017
The light's construction and quality of beam are fine.

However, I'm just not getting used to the user interface - and have to struggle with multiple button presses *and presses of different lengths of time* to get what I want.

It's like have one car where the break is on the right and the gas is on the right. I almost wince when needing to use the light, knowing it's just not going to do what I want without fiddling for ten to twenty seconds. I've never had that issues with a couple other flashlights I own, each with their own interface.

In the month I've had it, the light has also come on in my pocket twice. And I worry about the longevity of the rubber flap that protects the on board USB charging port. Time will tell if if holds up, or if that port will begin to leak, corrode, etc... With the rarity of charging in these great batteries I'd rather the port it was less convenient, and a bit more protected.

Overall, I don't recommend. if' i'd bought locally, I would have returned it due to the interface that just doesn't do it for me.

By robert
Sanford, FL
Very Bright, nice battery choices
April 19, 2017
Very Bright, nice battery choices, good size to put in vehicle.
Related Items

JETBeam KO-01 Outdoor USB Rechargeable Flashlight - CREE XP-L LED - 1080 Lumens - Uses 1 x 18650 or 2 x CR123As

  • $39.95
  • & Free Shipping On Orders Over $50
  • In Stock