SERFAS USL-6BK Thunderbolt Usb Headlight 713835022931

( Brand: Serfas ), ( Manufacturer Part Number: USL-6BK ), ( Part Type: Headlight ), ( UPC: 713835022931 ), ( Color: Black ), ( Gtin: 00713835022931 )

Review SERFAS Thunderbolt Usb Headlight Black Fast Ship

The Serfas USL-6BK Thunderbolt USB Rechargeable Bike Headlight is an essential accessory for any cyclist, offering a powerful and versatile lighting solution for your night rides. This headlight boasts six super-bright, high-intensity LED bulbs that emit a total of 350 lumens, ensuring you see the road clearly and can be seen by others.

The Thunderbolt USB headlight is designed with convenience in mind. It features a USB rechargeable 2200mAh lithium-ion battery, allowing you to charge it using a standard USB port. The battery can be easily detached from the light body for charging, making it perfect for those who are always on the go. A full charge takes approximately 3 hours.

The headlight is equipped with a durable, waterproof housing, ensuring it can withstand various weather conditions. It also features an adjustable elastic band that fits securely around handlebars from 22mm to 32mm in diameter. This versatile design allows you to install it on various types of bicycles, including road, mountain, and commuter bikes.

The Thunderbolt USB headlight offers multiple output modes, including high, medium, low, and flashing, catering to different riding conditions and preferences. With a run time of up to 12 hours on the lowest setting, you can enjoy extended hours of nighttime cycling.

This headlight is designed with a built-in accelerometer, allowing it to automatically adjust to ambient lighting conditions, ensuring optimal visibility at all times. The light also features a side visibility design, enhancing your safety by making you more visible to motorists and pedestrians.

The Serfas USL-6BK Thunderbolt USB Rechargeable Bike Headlight is a reliable and high-performing accessory that offers versatility, convenience, and safety for any nighttime cycling adventure.

Serfas USL-6BK Thunderbolt USB Headlight: A Comprehensive Evaluation

The Serfas USL-6BK Thunderbolt USB Headlight is a versatile and powerful option for cyclists looking for an efficient and convenient lighting solution. In this evaluation, we will discuss the key features, advantages, and disadvantages of this headlight to help you make an informed decision.

1. USB Rechargeable: The Serfas USL-6BK Thunderbolt Headlight is USB rechargeable, allowing for easy charging using a standard USB port.

2. Six Ultra-Bright LEDs: This headlight boasts six ultra-bright LED bulbs, providing an impressive output of up to 160 lumens.

3. Multiple Light Modes: The USL-6BK offers multiple light modes, including high, medium, low, and flashing, to cater to various riding conditions and preferences.

4. Versatile Mounting System: The headlight features a tool-less FlexTight bracket, which allows for quick and easy installation on handlebars with diameters ranging from 22.2mm to 31.8mm.

1. Convenient USB Charging: The USB rechargeable feature eliminates the need for disposable batteries, making the headlight a more eco-friendly and cost-effective choice in the long run.

2. Powerful Output: With six ultra-bright LEDs, this headlight offers an impressive output of up to 160 lumens, ensuring excellent visibility in dark conditions.

3. Multiple Light Modes: The USL-6BK's various light modes cater to various riding conditions and preferences, allowing users to customize their lighting experience.

4. Tool-less FlexTight Bracket: The versatile mounting system allows for quick and easy installation on handlebars with various diameters, making it a convenient option for cyclists.

1. Limited Battery Life: While the USB rechargeable feature is a major advantage, the battery life is still a limiting factor. A full charge takes approximately 3 hours, and the headlight can last up to 4 hours on the lowest light mode.

2. Size and Weight: Compared to some other headlights on the market, the Serfas USL-6BK Thunderbolt is larger and heavier, which may be a concern for some cyclists.

3. Lack of Side Visibility: This headlight primarily focuses on forward visibility, and while it does offer some side visibility, it may not be sufficient for cyclists who prioritize this feature.

The Serfas USL-6BK Thunderbolt USB Headlight offers a powerful output, convenient USB charging, and a versatile mounting system, making it an excellent choice for cyclists seeking a reliable and efficient lighting solution. However, its limited battery life, size, weight, and side visibility may be disadvantages for some users. Ultimately, the decision to purchase this headlight depends on your individual priorities and preferences.

If you prioritize powerful output, convenient USB charging, and a versatile mounting system, the Serfas USL-6BK Thunderbolt USB Headlight is an excellent option. However, if you require extended battery life, prioritize side visibility, or prefer a lighter and more compact design, you may want to consider alternative headlights on the market.

Details:

Brightness: 90 lumen. Whats your mounting pleasure. Features a water resistant silicone body and unique mounting options. Number of Pieces: 1.

Country of Origin: China. Water Resistance Level: Resistant. All lights are robs compliant and all testing is done in house. Its your ride, call.

Mounting Type: Handlebar Mount. Serfas Thunderbolt USB Headlight: Color: Black, Brand: Serfas, MPN: USL-6BK, UPC: 1, EAN: 31,: Black. Since the Thunderbolt is rechargeable, you can say goodbye buying batteries and say hello to saving earth your hardened money. From the Manufacturer If you're riding at night, let Serfas guide the way with Thunderbolt Headlight.

Brand Name: Serfas. Material: Silicone. Charge up, light up and get riding safely at night with the Thunderbolt. More efficient leds high quality lenses to increase brightness Clarity.

Auto Part Position: Front. The USB-rechargeable Thunderbolt can be mounted virtually anywhere on the front of your bike from the handlebars to fork. Manufacturer: Serfas. Number of settings: 4.

Power Source: Battery Powered.

part #: usl6bk prices

• $48.69-$61.82

specifications flalahea:

• brand: Serfas
• mpn: Usl-6bk
• part type: Headlight
• upc: 713835022931
• color: Black
• gtin: 00713835022931

returns flalahea:

• method: Money back
• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

general flalahea:

• condition: New
• Camping Hiking > Flashlights, Lanterns Lights > Headlamps

seller flalahea:

• city: US
• rating: 100.0%
• # reviews: 25

shipping flalahea:

• service: Standard
• type: Fixed
• cost: $0.00
• transit: 5-11 Days
• class: Standard

payments flalahea:

• credit card: Diners-club
• other
• wallet: Paypal

offer flalahea:

• sold: 0
• started: August 31, 2025
• options: Ship-to-home
• availability: In Stock
• quantity: 1

Serfas USL-6BK Is Similar To:

• Tsl-s150 Serfas 150 Lumen Headlight New Other (47.5% similar) Brand new never opened...(October 3rd, 2016)
• Serfas Tsl-1300m True 1300 Bike Light Bicycle Headlight Night Riding Lumens (44.3% similar) Product features: brightest trail companion - with 1300 lumen of crystal-clear brightness, this headlight lights up every twist and turn the trail, helping you spot obstacles navigate confidently, even in complete darkness. Serfas true 1300 bike light bicycle headlight night riding lumen. Ultimate ...(April 30th, 2025)
• Serfas Utl-6bk Thunderbolt Usb Taillight Black (82.4% similar) Part #: Serfas UTL-6BK for sale...(July 8th, 2025)
• Serfas Tbt-50r Thunderbolt 2.0 Tail Light Bicycle Night Riding 7 Modes 50 Lumens (51.5% similar) Battery that doesn flake out - solid modes last up to 5.5 hours, flash 19.5 hours. Real-world riders say its seriously visible - cars notice you faster, even from a distance.: super bright actually works - 50-LUMEN daytime flash mode cuts through traffic and bright daylight. Auto safe mode kicks in ...(August 18th, 2025)
• Serfas 713835025741 Seat Stay Taillight Black Fast Ship (55.9% similar) Mounts to any tube on your bike. Mounting type: seat mount. Who said the sequel isn't better original. More efficient leds high quality lenses to increase brightness clarity. Manufacturer: Serfas. A more water resistant silicone casing can handle splashes and spills. Serfas seat stay taillight: ...(August 31st, 2025)