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Serfas Thunderbolt Head Light

Item #: LS244A11
USD$40.00
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Serfas Thunderbolt Head Light

The Serfas Thunderbolt (USL-6) gives you high performance and endless mounting options, and is a stellar bargain buy. The 15- micro (double strength) LED strip puts out 90 lumens, giving you plenty of light as you safely ride to your destination. The light can be seen up to 1 mile away, giving cars ample time to move out of your path. With 3 light settings, you’ll always be ready for what’s ahead. You won’t find yourself riding to your local 24 hour pharmacy for batteries any more, as the USL-6 Thunderbolt is USB rechargeable!

  • Can be seen up to 1 mile away
  • Light installs/ removes from bar in 3 seconds
  • USB rechargeable
  • Modes: Lo/Hi/Flash
  • 9 hour burn time
4.0 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
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This LED Light Just Plain Works Well
--I use this light on the handlebar of my Cannondale Badboy 1, which I use as a police patrol bike.
--This light is incredibly bright. So much so that I ride it on its lower flash setting mostly. While on patrol, I find it quick and easy to turn on and off, it's weather resistant, and very rugged. It looks awesome on a black bar, and it truly is an incredible beacon for cars to see me at night. I haven't had any issued with charging time or battery life.
--It is not bright enough to be used as a headlight for illuminating your path. 90 lumens may sound like enough, but it's so dispersed that it's almost worthless for that. It's a "Here I am, don't run me over." light.
I will buy another for my motorcycle.
Cheers from Florida...
Jim

PROS: Rechargable, Long battery life, Great visibility, Low battery indicator

CONS: Weak beam

BEST USES: Front headlight, Night commute
November 30, 2013
Location:
West Palm Beach, FL
Very bright, low battery life
I've never seen bike lights with better car visibility, and the front one can be slightly helpful as a headlight for potholes on dark streets. It's true, you may need to charge them about once a week. It's extremely frustrating when they run out of batteries. I don't really understand the low battery indicator. Overall I'm quite happy with mine, as long as I keep them charged. They make me feel safer in traffic at night.

PROS: Great visibility

CONS: Short battery life

BEST USES: Night commute, Rear safety light, Front headlight
June 16, 2013
Location:
Oakland, CA
Great little be seen light
I liked it so much this is my second one. Light weight, very bright, mounted on fork so a great be seen light
February 13, 2017
Purchased
6 months ago
Location:
Oak ridge, tn
Bright, but battery life unexceptional
Use this light for commuting from work to home at night. About a 45-minute ride. Cannot get through a work week on one charge. I use the blink mode, and I have to cycle though several other mode everytime I turn it on.

PROS: Easy to Use, Durable, Bright And Easy To Attach, Lightweight

CONS: Battery Life Seems Low
February 17, 2013
Location:
Seattle, WA

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Free Shipping Offer

Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.