USL-900 E-Lume 900


SKU: USL-900 / 713835993972

Quick Overview

The Serfas E-Lume Series light line was developed to be the best on the market at the very best value. These headlights will meet and exceed their expected lumen output while offering you all the features you’ve come to enjoy from Serfas lighting. Please welcome the new line of E-Lume Series lights, and be prepared to turn night into day.


1752 in stock (can be backordered)




  • Compact Lightweight Aluminum Design
  • Super Bright (900 Lumens) Output
  • Water Resistant Rating: IPX6
  • New 3 Level Battery Life Indicator
  • Last Mode Memory
  • Max Charges Rate of 1.5A
  • Charges from Dead to Fully Charge in 2 hours (Using 1.5A Rated Charger)


  • Solid Modes: Overdrive (900 Lumens): 1.5 hrs, High (450 Lumens): 3 hrs, Medium (300 Lumens): 3.5 hrs, Low (150 Lumens): 9 hrs
  • Flash Modes: Daytime Flash (900 Lumens): 50 hrs, Low Flash (200 Lumens): 30 hrs
  • Weight: 162 Grams with Bracket
  • Battery: LG® 1-Cell Li-Ion, 2600mAh


  • Micro USB Cord
  • Handlebar Mount


4 reviews for USL-900 E-Lume 900

  1. AaronG

    Another great product from Serfas. A compact, lightweight light that kicks out some serious lumens
    I picked up this light to replace my older helmet light. This light has a great lighting pattern that really illuminates the trail. Quick USB charging, no exposed cords or separate battery packs.

  2. Bee

    The only reason I give you a 4 stars is because at $80, this is not a cheap light.
    That said, I am very impressed by the quality and the overall power.
    Out of necessity, yesterday I bought the E-LUME 900 for my weekly Taco ride (night ride in the woods.)
    Very easy to mount, it charged within the time expected and it did last (on full blast) for 1 hour and 40 minutes. (NB: after a while, it gets hot at the front).
    I did find very useful the 3 level battery life indicator.
    In a group of 6 bikes, my light was the brightest by far.
    Now, I might save some more $ and get the 1600… just because… bigger is always better. 🙂
    Well done Serfas!

    • Serfas

      Thanks for the review Bee! We’re pumped to hear how pleased you are with the performance of the E-Lume 900! Nothing wrong with cranking it up a notch to the E-Lume 1600, your cycling buddies might get jealous 😉 Thanks again for the great feedback, enjoy your future Taco rides 🙂 – The Serfas Team

  3. Clayton

    Hi guys I just got the new e-lume 900 what a totally awesome light it has certainly got the goods
    It lights up night to day I use it on My cruiser and just love it good work Serfas

    • Serfas

      Clayton, we appreciate the feedback and are stoked to hear how much you’re enjoying your new E-Lume 900! Be safe cruisin’ and have a great time 😀 – The Serfas Team

  4. Bernard Meggison

    i have used this light for almost 2 years.
    It’s amaxing how often I receive compliments on the brightness of the light.
    I’m im law enforcement for my one of my states longest bike trails.
    I use it in the flash mode to consrve the battery life. My usual shift is 8-9 hiurs. This has never ran out of juice!!!
    Some folks complain about the brightness (day use), but I need this for safety and visibility during my 40-50 miles per day in the saddle.
    On evening club rides, everyone stays behind me to see the trail ahead,
    Truly, a wonderful product that produces more than it’s specs says.
    Ranger, Bernie

    • Serfas

      It’s a pleasure to hear how well our little E-Lume serves your purposes both on and off duty! Thank you for your service to the community keeping trails safe for us all – The Serfas Team

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