Go Back  Bike Forums > Bike Forums > Electronics, Lighting, & Gadgets
Reload this Page >

Serfas SL-255 Battery Operated Headlight

Notices
Electronics, Lighting, & Gadgets HRM, GPS, MP3, HID. Whether it's got an acronym or not, here's where you'll find discussions on all sorts of tools, toys and gadgets.

Serfas SL-255 Battery Operated Headlight

Old 07-19-17, 07:22 AM
  #1  
rumrunn6
Senior Member
Thread Starter
 
rumrunn6's Avatar
 
Join Date: Jul 2008
Location: 25 miles northwest of Boston
Posts: 27,320

Bikes: Bottecchia Sprint, GT Timberline 29r, Trek FX Alpha 7.0

Mentioned: 107 Post(s)
Tagged: 0 Thread(s)
Quoted: 4536 Post(s)
Liked 2,169 Times in 1,481 Posts
Serfas SL-255 Battery Operated Headlight

just got this for Son's bike cuz sometimes he'll take a bike for the day & wide up at a neighborhood party & ride home well after midnight. might be a decent backup to throw in my bag too. it takes two AA batteries. there are 3 brightness settings & 1 flashing setting. approx $25 on Amazon. quality seems really good & easy to open & install the batts. clamp is clever & strong. it's got a neat adjustment system whereby a pin in the end of the strap (similar to the pin in watch straps) which can be moved to different grooves in the clamp depending on how much slack you need. interesting that the head on the mount swivels to allow access to that adjustment feature. seems bright enough to see by even judging it on my couch in the living room this morning well after sunrise. high setting purports to to be 255 lumen. slides off to be a decent flashlight





rumrunn6 is offline  
Old 07-19-17, 02:20 PM
  #2  
canklecat
Me duelen las nalgas
 
canklecat's Avatar
 
Join Date: Aug 2015
Location: Texas
Posts: 13,221

Bikes: Centurion Ironman, Trek 5900, Univega Via Carisma, Globe Carmel

Mentioned: 195 Post(s)
Tagged: 0 Thread(s)
Quoted: 4386 Post(s)
Liked 2,419 Times in 1,569 Posts
Yup, great value in a AA powered light. Had one for about a year and a half. It mostly stays on my errand bike. Sometimes I'll take it as a backup on my other bikes. It's ideal for the MUP because of the tighter spot beam and small lens hood that minimizes overspill -- it's less likely to blind oncoming cyclists or pedestrians.

And I really like the Serfas mount. Very strong, versatile, doesn't demand as much finger strength as some rubber band mounts. On days when arthritis pain affects my hands I find it difficult to manage the stout rubber band on my Light & Motion headlight, but the Serfas uses a clever camming clamp with good mechanical advantage. I've mounted the Serfas SL-255 on my suspension forks, rigid forks, head tubes, and occasionally even the handlebar.

I wish they'd make a 500 lumen version with four AA batteries, somewhat broader beam and a slightly more prominent lens hood to minimize overspill. There are times I'd rather not mess with carrying a USB battery to recharge my L&M. Sometimes it's quicker and easier to swap AA batteries, which can be bought almost anywhere. And I use NiMH rechargeables most of the time.
canklecat is offline  
Old 07-20-17, 07:08 AM
  #3  
rumrunn6
Senior Member
Thread Starter
 
rumrunn6's Avatar
 
Join Date: Jul 2008
Location: 25 miles northwest of Boston
Posts: 27,320

Bikes: Bottecchia Sprint, GT Timberline 29r, Trek FX Alpha 7.0

Mentioned: 107 Post(s)
Tagged: 0 Thread(s)
Quoted: 4536 Post(s)
Liked 2,169 Times in 1,481 Posts
Originally Posted by canklecat View Post
I've mounted the Serfas SL-255 on my suspension forks, rigid forks, head tubes, and wish they'd make a 500 lumen version with four AA batteries, somewhat broader beam and a slightly more prominent lens hood to minimize overspill
gotta try those other mounting options sometime. I noticed it had a fairly well focused beam compared to my Magicshine. & yeah since it's such a nice unit, a bigger version would probably sell too. wonder if anyone makes such an animal with a separate battery pack that you have in your pocket to keep it warm w enough wire to access your mounting locations. like with my magicshine, I put the battery in my trunk bag. the OEM battery used to ride in an empty water bottle with bubble wrap inside & plastic wrap over the top as insulators. the new replacement battery is too big for that option. question for ya - how does this light do in the rain?
rumrunn6 is offline  
Old 07-20-17, 02:18 PM
  #4  
canklecat
Me duelen las nalgas
 
canklecat's Avatar
 
Join Date: Aug 2015
Location: Texas
Posts: 13,221

Bikes: Centurion Ironman, Trek 5900, Univega Via Carisma, Globe Carmel

Mentioned: 195 Post(s)
Tagged: 0 Thread(s)
Quoted: 4386 Post(s)
Liked 2,419 Times in 1,569 Posts
No problems in the rain, been caught out several times. The gasket seals the two halves and nothing leaks around the on/off switch.

It doesn't get cold enough often enough here for winter battery use to be an issue. Lithium AA batteries do well in the cold but are expensive. At that point it's probably more cost effective to get a rechargeable light that uses Lithium ion batteries.

I've used the SL-255 with alkalines and NiMH AA batteries. Like most devices on alkalines the SL-255 gradually dims over a long period before exhausting the batteries. Plenty of warning to change batteries when I notice the high setting is as dim as the lowest setting. With NiMH rechargeables it dims more quickly and will go out rather suddenly, but the dimming period is noticeable enough to notify me it's time for fresh batteries.
canklecat is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Spld cyclist
Electronics, Lighting, & Gadgets
5
02-06-18 01:55 PM
98d5a52ef69a7bf
Folding Bikes
12
10-29-17 08:37 PM
Insidious C.
Commuting
16
09-21-16 01:40 PM
vol
Electronics, Lighting, & Gadgets
28
10-15-15 10:17 PM
bmt074
Commuting
6
05-28-10 12:43 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.