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Serfas Thunderbolt Tail Light

Item #: LS244A12
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Serfas True 750 Headlight

The Serfas Thunderbolt (UTL-6) Taillight gives you style and safety in one high- powered and affordable package. This USB rechargeable light comes with 35 lumens of firepower while giving riders’ several different rear facing mounting options. The Thunderbolt makes you visible up to 1 mile away, which will help keep you safe in the concrete jungle.

Serfas True 750 Headlight Features

  • Can be seen 1 mile away
  • Steady and flashing modes
  • Run time: Up to 9.5 hours in Low Blink mode
  • Modes: High Beam, Low Beam, High Blink, Low Blink
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REVIEW SNAPSHOT®

by PowerReviews
Serfas Thunderbolt Tail Light
 
4.8

(based on 6 reviews)

Ratings Distribution

  • 5 Stars

     

    (5)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Great visibility (5)
  • Rechargable (5)
  • Long battery life (3)

Cons

    Best Uses

    • Rear safety light (6)
    • Good for commuting (3)
      • Reviewer Profile:
      • Avid cyclist (5)
      • Was this a gift?:
      • No (6)

    Reviewed by 6 customers

    Sort by

    Displaying reviews 1-6

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    (2 of 2 customers found this review helpful)

     
    5.0

    Serfas Thunderbolt Taillights

    By Rick

    from Reynoldsburg, Ohio

    About Me Avid Cyclist

    Verified Buyer

    Pros

    • 1 Excellent Adaptabilit
    • 2 Great Visibility
    • 3 Can Be Used On Helmet
    • 4 Fast Recharge
    • Long battery life
    • Rechargable

    Cons

      Best Uses

      • Bike Frame And Helmet Mou
      • Night commute
      • Rear safety light

      Comments about Serfas Thunderbolt Tail Light:

      I use several of these tailights and have found them to be very adaptable for use on various areas of the bike frame. I also have one mounted on the rear of my helmet. The elastic bands used to secure them hold the units very well. The only drawback to these lights is that they have to be removed to recharge them. For me, this is no big deal. The lights are extremely bright -the brightest I have found. The charge lasts about 3 hours on full solid beam or about 5 hours on the flash pattern settings. I love these lights as I often take 50-60 mile rides during the evening hours, often return at dusk or shortly after dark. They also provide an excellent taillight for daytime use.

      • Was this a gift?:
      • No

      (1 of 1 customers found this review helpful)

       
      5.0

      Makes For A Great Patrol Bike Light

      By PoPo Jim

      from West Palm Beach, FL

      About Me Avid Cyclist

      Verified Buyer

      Pros

      • Great visibility
      • Long battery life
      • Low battery indicator
      • Rechargable

      Cons

        Best Uses

        • Night commute
        • Rear safety light
        • Trail riding

        Comments about Serfas Thunderbolt Tail Light:

        --This light is used on the seat post of a Badboy 1 police patrol bike and it looks like it came from the factory . It looks awesome, on or off.
        --This light is great because it provides an uncompromised and exceptionally bright light that can easily be seen by others. It's off-axis visibility is crazy good and I actually have to run it on the reduced power flash, because the old people where I work say that it overwhelms them as they approach me when the light is on high.
        --Yes, these lights are not cheap, but truly you are buying a super-decent light that seems very robust, well-designed, efficient, and the ribbon design just looks awesome. I cannot wait to see future designs, as LED technology is awesome.
        --My only negative is that I wish that the charging adapter had a micro USB head instead of the mini USB. Micro USB is what 99% of non-proprietary Android cell phones use, which I have many of. Mini USB is so 1990's. My NR light is Micro USB and I can charge it anywhere, even if I need to borrow someone's charger. Only the really old guys with flip phones have the Mini USB chargers.
        --I am also using this on the back of my R1200GS and it's equally effective. I own the headlight too and it's just as nice, especially as a patrol light/marker, not as a primary headlight.

        • Was this a gift?:
        • No
         
        5.0

        Very bright

        By Predict

        from PNW

        About Me Avid Cyclist

        Verified Buyer

        Pros

        • Easy mount
        • Great visibility
        • High Quality
        • Long battery life
        • Rechargable

        Cons

          Best Uses

          • Night commute
          • Rear safety light

          Comments about Serfas Thunderbolt Tail Light:

          I was pleasantly surprised with the quality and visibility. I use this light for night time commuting and it's absolutely perfect.

          • Was this a gift?:
          • No
           
          5.0

          Amazing

          By Creed

          from Cincinnati OH

          About Me Avid Cyclist

          Verified Reviewer

          Pros

          • Great visibility

          Cons

            Best Uses

            • Rear safety light

            Comments about Serfas Thunderbolt Tail Light:

            This light is super bright and easy to install. One of the biggest selling points of this light is that the brightness does not change with minor changes in viewing angle like it does with some other lights. With my old tail light, if you saw if from even a few degrees off from straight on, the brightness was much less. Not so with this light. Another plus is that when the mounting rubber bands eventually break on this light, you can just replace them with regular rubber bands. You can't do that with many other lights. Add to that the rechargeable battery and this light is a winner. The only thing I would change would be to give it a faster flash mode.

            • Was this a gift?:
            • No
             
            5.0

            BRIGHT

            By DBI

            from Jax, FL

            About Me Avid Cyclist

            Verified Reviewer

            Pros

            • Great visibility
            • Rechargable

            Cons

              Best Uses

              • Rear safety light

              Comments about Serfas Thunderbolt Tail Light:

              This thing is bright!! I run it in the HIGH FLASH mode during the day. The USB battery charge is a nice to have. My longest ride has been 4hrs and I've had no issues with the battery life.

              • Was this a gift?:
              • No

              (0 of 1 customers found this review helpful)

               
              4.0

              Good Rear Light

              By KWC

              from Washington PA

              About Me Competitive Cyclist

              Verified Buyer

              Pros

              • Great visibility
              • Low battery indicator
              • Rechargable

              Cons

              • Short battery life

              Best Uses

              • Rear safety light

              Comments about Serfas Thunderbolt Tail Light:

              Good service

              • Was this a gift?:
              • No

              Displaying reviews 1-6

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