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Serfas Thunderbolt Usb Headlight, Black
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Vendor: Serfas
Type: Safety & Security
Sku: WBLSDB009NZVQ7O
Availability: In Stock
Sold by LightsDaddy, an authorized reseller.
Returns accepted within 30 days | support@lightsdaddy.com
Shipping Information
- Free Standard Shipping — United States only
- Processing Time: 1–3 business days
- Estimated Delivery: 3–5 business days after dispatch
- Securely packed to protect your lighting fixtures during transit
- Tracking number sent via email once dispatched
- Orders over $250 require signature upon delivery. Taxes calculated at checkout.
Returns & Refund
Returns accepted within 30 days of delivery.
Damaged or Defective Item
Free return shipping + replacement or full refund
Wrong Item Received
Free return shipping + replacement or full refund
Change of Mind
Return shipping at customer's expense · Item must be unused & in original packaging
All returns require a Return Authorization (RA) number before sending.
View Full Return & Refund Policy
Safety & Compliance
⚠️
California Proposition 65 Warning
Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
www.P65Warnings.ca.gov
⚡
Electrical Safety Warning
All electrical products must be installed by a qualified electrician in accordance with local wiring regulations. Incorrect installation may result in fire, electric shock, or injury.
Always disconnect power at the circuit breaker before installation.
💡
Bulb & Usage Advisory
Do not exceed the maximum wattage specified on the fixture label. Keep away from flammable materials. Allow adequate ventilation around the fixture.
Keep out of reach of children. Not suitable for wet locations unless rated IP65 or higher.
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Serfas Thunderbolt Usb Headlight, Black
$47.50
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Frequently Asked Questions
- Q: What materials is the Serfas Thunderbolt USB Headlight made of? A: The Serfas Thunderbolt USB Headlight is made of silicone. This material ensures durability and provides a water-resistant body for outdoor use.
- Q: What are the dimensions of the Serfas Thunderbolt USB Headlight? A: The dimensions are six inches in length, four point zero two inches in width, and one inch in height. These compact dimensions make it easy to mount on various bike parts.
- Q: How bright is the Serfas Thunderbolt USB Headlight? A: The headlight produces ninety lumens of brightness. This output enhances visibility and safety while riding at night.
- Q: How do I mount the Serfas Thunderbolt USB Headlight? A: You can mount the Serfas Thunderbolt anywhere on your bike's front, including handlebars and forks. Its unique mounting options make it versatile for different setups.
- Q: How do I charge the Serfas Thunderbolt USB Headlight? A: The headlight is USB rechargeable and fully charges in three point five hours. Simply use the included USB cable to connect it to a power source.
- Q: What modes does the Serfas Thunderbolt USB Headlight offer? A: It features four modes: high beam, low beam, and two flash modes. These options allow you to choose the best light setting for your riding conditions.
- Q: How long does the battery last on high beam? A: On high beam, the battery lasts for one point five hours. This duration is suitable for short rides or emergencies.
- Q: How long does the battery last on low beam? A: On low beam, the battery lasts for six point five hours. This extended run time is ideal for longer rides at night.
- Q: Is the Serfas Thunderbolt USB Headlight waterproof? A: Yes, the headlight features a water-resistant silicone body. This design protects it from rain and splashes while riding.
- Q: What is the run time for flash modes? A: The high blink mode lasts for three point five hours, and the low blink mode lasts for nine hours. These modes are great for alerting others to your presence.
- Q: Can I use the Serfas Thunderbolt USB Headlight during the day? A: Yes, it can be used during the day, especially in flash mode for visibility. The brightness ensures you are seen even in daylight.
- Q: Is the headlight easy to remove and reattach? A: Yes, the unique mounting system allows for easy removal and reattachment. This feature is convenient for charging or switching between bikes.
- Q: Does the Serfas Thunderbolt USB Headlight come with a warranty? A: Yes, the product typically comes with a manufacturer's warranty. Check the packaging or website for specific warranty details.
- Q: What should I do if the headlight does not turn on? A: If the headlight does not turn on, ensure it is fully charged. If it still fails, contact customer support for troubleshooting assistance.
- Q: Is the Serfas Thunderbolt USB Headlight suitable for mountain biking? A: Yes, it is suitable for mountain biking due to its durability and bright output. Its mounting flexibility also makes it ideal for rough terrains.
- Q: Are the lithium-ion batteries replaceable? A: No, the lithium-ion batteries are not replaceable. However, the rechargeable feature allows for long-term use without needing to buy new batteries.