Uploaded August 2024 | Updated September 2026, 1 week ago
Is this the KELNOW Smart Bike Light, best long lasting cheap bike tail light? Best Smart tail light and best cheap smart tail light are also possibilities. We have tested a number of cheap bike tail lights and found that the run time battery just doesn't last. This bike taillight review will help you decide what keeps you safe.
What does SMART TAIL LIGHT Mean
motion detector
- powers on and off automatically
- 20 seconds of idle it power on
- brake detection - changes to strobe for 5 seconds
COB Light
- Chip On Board
- flat LED with circuit built in rather than next to
- newer tech
- broader light
- but uses slightly more electricity
800mAh
USB Fast charging
IPx5 Waterproof
- not waterproof
- VERY resistant
- excellent in rain, could drop in water puddle for a second or two
Two Ways to Mount
- underseat
- seat post
- virtical or horizontal
Running Time:
Marquee light 1: 35 hours
Marquee light 2: 17 hours
Double flashing mode: 20 hours
[Auto ON/OFF & High Lumen COB Tailight] Auto On/Off makes your riding safety more effective and more energy efficient. Lights automatically turn on when moving or vibrating. With best COB leds and smart sensors, ultra bright brake falsh light, even in daytime make you more visible for other road users.
[Smart brake sensing & IPX5 Waterproof & 35H+ Runtime Tailight] When braking, quick flash for 5 secs lights warning back rider to enhance your safety. IPX5 design keeps you absolutely safe in the rainday. It can lasting 35 hours, no longer worry about forget to charge.
[Two Mounting Ways] KELNOW taillight comes with two bracket for mounting on the bike, you can mount it under the saddle rail or use the rubber band to mount on the seat post. No extra tools needed, easy to mount and remove
[USB Rechargeable] KELNOW bicycle tail light can be charged by USB cable via computers, chargers or portable power banks. Which save money on battery replacements and save energy!
[High Quality After-Sales Service] KELNOW is committed to providing high quality bike accessories, we have absolute requirements and confidence in our products.
Intelligent and sensitive braking sensor
Built-in high-density speed senor. When detecting braking, the red
light strobes for 5s ,then return to anterior mode.
1 Normal mos (The two blue lights at the sides are on)
Marquee light 1, Marquee light 2, Double flashing(One click to switch mode; Double clicks to be OFF. When it is OFF, holding down the power key to switch to intelligent mode). When detecting braking, the red light strobes for 5s, then back to anterior mode. When the bike keeps still for 30s, it will start sleeping mode. When the bike move, it will wake up.
2 Intelligent mode
Marquee light 1, Marquee light 2, Double flashing(One click to switch mode; Double clicks to be OFF. When it is OFF, holding down the power key to switch to intelligent mode). When detecting braking, the red light strobes for 5s, then back to anterior mode. It will be OFF after 8 seconds When the bike keeps still for 30s, it will start sleeping mode. When the bike move, it will wake up.
Don't Like
- no website - just amazon
- micro usb
- different color LEDs
0:00 Introduction
0:33 KELNOW Smart Bike Light Unboxing
1:11 What Is A Smart Tail Light
1:33 KELNOW Smart Bike Light Battery Life Run Time
2:03 What Are COB LED's Better?
2:48 KELNOW Smart Taillight Battery Size
3:15 What is IPx5 vs IPx6 Water Proof
3:45 KELNOW Smart Taillight Modes
5:20 Cheaps Smart Tail Light Price
5:34 Problems with KELNOW Tail Lights
6:20 KELNOW Smart Taillight Review
7:01 Outro
Is this the KELNOW Smart Bike Light, best long lasting cheap bike tail light? Best Smart tail light and best cheap smart tail light are also possibilities. We have tested a number of cheap bike tail lights and found that the run time battery just doesn't last. This bike taillight review will help you decide what keeps you safe.
What does SMART TAIL LIGHT Mean
motion detector
- powers on and off automatically
- 20 seconds of idle it power on
- brake detection - changes to strobe for 5 seconds
COB Light
- Chip On Board
- flat LED with circuit built in rather than next to
- newer tech
- broader light
- but uses slightly more electricity
800mAh
USB Fast charging
IPx5 Waterproof
- not waterproof
- VERY resistant
- excellent in rain, could drop in water puddle for a second or two
Two Ways to Mount
- underseat
- seat post
- virtical or horizontal
Running Time:
Marquee light 1: 35 hours
Marquee light 2: 17 hours
Double flashing mode: 20 hours
[Auto ON/OFF & High Lumen COB Tailight] Auto On/Off makes your riding safety more effective and more energy efficient. Lights automatically turn on when moving or vibrating. With best COB leds and smart sensors, ultra bright brake falsh light, even in daytime make you more visible for other road users.
[Smart brake sensing & IPX5 Waterproof & 35H+ Runtime Tailight] When braking, quick flash for 5 secs lights warning back rider to enhance your safety. IPX5 design keeps you absolutely safe in the rainday. It can lasting 35 hours, no longer worry about forget to charge.
[Two Mounting Ways] KELNOW taillight comes with two bracket for mounting on the bike, you can mount it under the saddle rail or use the rubber band to mount on the seat post. No extra tools needed, easy to mount and remove
[USB Rechargeable] KELNOW bicycle tail light can be charged by USB cable via computers, chargers or portable power banks. Which save money on battery replacements and save energy!
[High Quality After-Sales Service] KELNOW is committed to providing high quality bike accessories, we have absolute requirements and confidence in our products.
Intelligent and sensitive braking sensor
Built-in high-density speed senor. When detecting braking, the red
light strobes for 5s ,then return to anterior mode.
1 Normal mos (The two blue lights at the sides are on)
Marquee light 1, Marquee light 2, Double flashing(One click to switch mode; Double clicks to be OFF. When it is OFF, holding down the power key to switch to intelligent mode). When detecting braking, the red light strobes for 5s, then back to anterior mode. When the bike keeps still for 30s, it will start sleeping mode. When the bike move, it will wake up.
2 Intelligent mode
Marquee light 1, Marquee light 2, Double flashing(One click to switch mode; Double clicks to be OFF. When it is OFF, holding down the power key to switch to intelligent mode). When detecting braking, the red light strobes for 5s, then back to anterior mode. It will be OFF after 8 seconds When the bike keeps still for 30s, it will start sleeping mode. When the bike move, it will wake up.
Don't Like
- no website - just amazon
- micro usb
- different color LEDs
0:00 Introduction
0:33 KELNOW Smart Bike Light Unboxing
1:11 What Is A Smart Tail Light
1:33 KELNOW Smart Bike Light Battery Life Run Time
2:03 What Are COB LED's Better?
2:48 KELNOW Smart Taillight Battery Size
3:15 What is IPx5 vs IPx6 Water Proof
3:45 KELNOW Smart Taillight Modes
5:20 Cheaps Smart Tail Light Price
5:34 Problems with KELNOW Tail Lights
6:20 KELNOW Smart Taillight Review
7:01 Outro
