Nitefighter BT40S Cree XP - G2 1600lm LED Bike Headlight

- BLACK 128335501

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  • 5 Star 77%
  • 4 Star 20%
  • 3 Star 2%
  • 2 Star 0%
  • 1 Star 1%

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Nitefighter BT40S LED Bicycle Light is a wide beam and high brightness mountain bike front light. Utilizing four Cree XP-G2(R5) LEDs, four brightness modes, max output 1600 lumen. BT40S model is the ideal illumination gear for mountain biking, touring, commuting, etc.

Main Features:
Utilizes four Cree XP-G2 neutral white LEDs, max 1600lumens output
Powered by four BAK 18650 rechargeable Li-on batteries, 7.4V 5200mAh
Uses high quality optical lens with a wide beam angle
4-Mode electronic Switch-Low-Med-High-Turbo
Digitally regulated output-maintains constant brightness
Overheat protection function
4 Color and 5 mode LED indicator displays remaining battery capacity
Quick to attach and detach using O-ring mounting straps sized for 20mm-35mm handlebars
Made of durable aircraft-grade aluminum
Premium type III hard-anodized anti-abrasive finish
Water resistant: IPX-6

1.Press the tail button repeatedly to change brightness to 30%-50%-75%-100%
2.Press and hold the tail button for 0.8 seconds to turn off the light from any mode
3.Overheating protection: BT40S led light will accumulate a lot of heat when it is working in turbo output. To avoid overheating, the flashlight will automatically transfer into the high brightness level when the case reaches a certain temperature



Model Number: BT40S
Type: Front Light
Placement: Handlebar
Suitable for: Mountain Bicycle,Road Bike

Basic Information

Product weight: 0.1050 kg
Package weight: 0.8900 kg
Product Dimension: 5.00 x 4.20 x 4.20 cm / 1.97 x 1.65 x 1.65 inches
Package Dimension: 12.00 x 10.00 x 5.00 cm / 4.72 x 3.94 x 1.97 inches


Package Contents: 1 x Nitefighter BT40S Bike Light, 1 x 18650 Li-ion Battery Pack, 1 x Rack, 1 x US AC Charger, 1 x Strap, 1 x Lens, 3 x O-ring, 1 x Cable, 1 x English User Manual

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Customer Reviews

4.85 out of 5
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  • lau
    nitefighter bt40s
    The color is perfect because that's neutral white !
    thats spread over a LARGE AREA compared to the other lights your trying to compare it to which put the beams into a much tighter "spot". So the bt40s will NEVER appear as bright as something set up for a tight spot because the spot itself is where the lumens are concentrated. BT40s spreads the lumens out so you can see more around you, not just a 3ft circle in front of you.

    They get hot if you let them run long enough but it takes a while. Thats actually A GOOD THING as its thermal path and dissipation is quite good.

    User interface is about the best I’ve yet seen on a bike light as well. NiteFighter has seen the light, that single button interfaces are nothing but clunky, and when you’re using mounted hardware like this, you have the option to do better. They have chosen a simple two button interface that resembles a rocker switch. Pressing either button will turn the light on. If you want more light, press up. Less, press down. The light will cycle up or down through the 4 constant output modes until you get where you need to be to see the trail in front of you.

    The battery is waterproof and well made.
    I guess if I had to say anything that could be improved here, it’d have to be the attachment. I’m not a fan of the “giant rubber band” method of handlebar connection. I’ve tried other lights that didn’t even function as well as this one with that method. It’s just never as stable as a more solid clamp in my experience.

    Jan 24,2017

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  • Peilin Hung
    Great light and good customer service too
    This light is perfect as a Mountain bike trail light. I ordered both the BT40S and BT21 but the BT21 never showed up, I was never notified and had to inquire. Other than that the product is good. I am very please with my purchase and recommend both the light and Shipping was timely, no issues there.

    I am very picky and was apprehensive of this light and site but I have been pleasantly surprised by both. To be honest, for the price, it is the best light i have used. And I have used many. The floody nature and the neutral white are perfect for hardcore Trail/Enduro MTB riding, handlebar mount is best for this light. Everyone is already bugging me about it... Here they come gearbest! Be ready!
    Could use better mounting hardware.
    Customer service advised me that The Nitefighter BT21 is no longer available per manufacturer. Not sure if this is only for U.S.

    Nov 18,2015

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  • Jose Luis Silva
    Great bicycle light
    Good construction quality, good illumination with several modes available.
    Very easy to mount, with several accessories to fit all bicycles types.
    2 different light floods and good autonomy with the supplied 4 batteries.
    It's a pitty that the batteries are not removable...

    Jul 30,2017

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  • Eireann
    Alot for your money!
    Well packaged, well presented, build quality is fantastic, choice of lenses, BAK batteries, very very bright, memory function, no strobe mode, Velcro straps is a nice touch for cable tidy, delivered faster than expected. Very impressed!!!
    None at all

    Dec 10,2015

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  • Iván
    Fantastic bike light !
    Very very strong light
    Small footprint
    Great battery duration 10 hours on low mode, enough for safe ride
    High quality construction/materials
    Great accesories and carry bag

    Sep 11,2015

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  • Chema
    Nitefighter BT40S
    An impressive shipping speed, less than 1 week after the order
    The product looks quality all around and I hope confirm that when used
    Very well packed aswell
    Maximum GB customer service rating
    No one

    Aug 14,2018

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  • logik
    Good Light
    I've used this light three times on the bars so far and like it. The build quality is excellent and the light has a floody output. The neutral white really brings out the contrast in trails.
    There are not any substantial cons, just a few little ones: the light doesn't project very far (but, hey, it's floody); the O-rings didn't quite fit my bars, so I used an old NiteRider ring.

    Sep 19,2015

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  • Sebaxgh
    Fantastic lamp
    - Very good build quality
    - Strong light
    - Two different optical lens
    - Good battery pack

    Recommend 100%

    Feb 07,2016

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  • Sebastian
    Powerfull bike light
    - Great set, satisfy every cyclist, or you can buy for someone as a gift.
    - Battery pack is holded in durable case
    - Four different light mode
    - instead of O-rings there should be added some holder
    - heat up on the high-mode

    Jul 10,2016

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  • B.K.
    Nitefighter BT40s
    bright Light. it illuminates Everything in Front of my Bike in huge Radius (approx. 12x4 square feet). Good Quality.

    Jul 24,2017

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