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Serfas Thunderbolt USB Rear Bike Light

RED

    Serfas Thunderbolt USB Rear Bike Light

    • $45.00
    5
    (2)

    Item # 852297

    REI Members get back an estimated $ 4.50 on this item as part of their annual member refund.

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    The Serfas Thunderbolt USB rechargeable rear bike light lets you alert others to your presence, thanks to its bright strip of micro LEDs.

    • The strip of 30 red micro-LED bulbs puts out up to 35 lumens of light; strip design puts out a nondirectional flood of light for wide coverage area
    • Water-resistant, flexible and finish-friendly silicone body and adjustable straps stretch around your bike's frame for easy, tool-free mounting and removal
    • 4 modes (with run times): high beam/constant (1.75 hrs.), low beam/constant (7 hrs.), high flash (3 hrs.), low flash (9.5 hrs.)
    • USB rechargeable design of the Serfas Thunderbolt rear bike light lets you recharge the light via a USB port; recharges in 2 hrs.

    Imported.

    Item 852297

    REI Membership

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    Serfas Thunderbolt USB Rear Bike Light Specs
    Specification
    Description
    Best use
    Cycling
    LED
    30 micro
    Multiple locations
    Yes
    2 hours
    Lithium ion
    Yes
    1.75 hours
    7 hours
    9.5 hours
    50 grams
    Bulb type
    Number of bulbs
    Taillight mounting
    Rechargeable
    Charge time
    Batteries
    Integrated battery
    Battery life on high
    Battery life on low
    Battery life flashing
    Weight

    Serfas Thunderbolt USB Rear Bike Light Customer Reviews

    REVIEW SNAPSHOT®

    by PowerReviews
    Serfas Thunderbolt USB Rear Bike Light
     
    5.0

    (based on 2 reviews)

    Reviewed by 2 customers

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    May

    20

    2013

     
    5.0

    Awesome light!

    By AZCCN

    from Phoenix, AZ

    About Me Avid Cyclist

    See all my reviews

    Verified Buyer
    Site Member

    Pros

    • Great visibility
    • Long battery life
    • Rechargable

    Cons

      Best Uses

      • Rear safety light

      Comments about Serfas Thunderbolt USB Rear Bike Light:

      Awesome light, really lets you be seen from behind. It was the only light that I was able to secure to my HAWG pack.

      • Was this a gift?:
      • No

      Bottom Line Yes, I would recommend this to a friend

      Was this review helpful? Yes / No

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      Mar

      28

      2013

       
      5.0

      Bright and Slim

      By Dao Vang

      from Fresno, CA

      About Me Avid Cyclist

      See all my reviews

      Site Member

      Pros

      • Great visibility
      • Low battery indicator
      • Rechargable

      Cons

        Best Uses

        • Night commute
        • Rear safety light

        Comments about Serfas Thunderbolt USB Rear Bike Light:

        I usually don't like things such as lights hanging off my bike, especially in the rear. So I bought this light and placed it on my seat tube. On full brightness, constant or flashing, this light is blinding to look at, which is great. However, the battery life in these modes are extremely short, as advertised. When I ride at night, I often run the light on low-flashing. So far I haven't been hit so it must be bright enough. Another reason I like it is because I can place it on the seat tube or seat stays. Either way, it's easy to turn on and off without having to get off the bike.

        • Was this a gift?:
        • No

        Bottom Line Yes, I would recommend this to a friend

        Was this review helpful? Yes / No

         - You may also flag this review

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