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Knog Boomer USB Rechargeable Rear Bike Light

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Product Description,
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Reviews

Knog Boomer USB rechargeable rear bike light is slim, stylish and bright, and easy to recharge via USB port, making it wonderfully versatile.

Super-bright, high-powered central red LED and 2 peripheral flashing red LEDs offer excellent visibility; light output can reach as high as 15 lumens
Rechargeable lithium-ion polymer battery offers up to 12 hrs. of flashing use (3.5 hrs. steady); low battery indicator in lens lets you know when it's time to recharge
Recharging the Boomer is easy—simply slide the light unit out of the flexible silicone body and plug into a USB port
Offers 5 useful modes: strobe flash, fast flash, random flash, constant on and a storage mode for periods when light will not be used for a month or longer
Water-resistant, slim, flexible and finish-friendly silicone body of the Boomer stretches around seat post or frame for easy mounting; no extra mounting hardware necessary

Please Note: This item contains a lithium battery and cannot be shipped to APO, FPO, U.S. Territories, international destinations or Hawaii, and are only available for in-store pickup in Alaska.

Imported.

Item 814762

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Knog Boomer USB Rechargeable Rear Bike Light Customer Reviews

REVIEW SNAPSHOT®

by PowerReviews

Knog Boomer USB Rechargeable Rear Bike Light

3.0

(based on 4 reviews)

50%

of respondents would recommend this to a friend.

Pros

Rechargable (3)

Cons

Best Uses

- Reviewer Profile:
- Avid cyclist (4)
- Was this a gift?:
- No (4)

Reviewed by 4 customers

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Displaying reviews 1-4

Nov

2012

1.0

Looks nice, but…

By Cyclist Luke

from Portland, OR

About Me Avid Cyclist

See all my reviews

Pros

Great visibility
Rechargable

Cons

Short battery life
Takes Forever To Charge
Too Easy To Turn On

Best Uses

Comments about Knog Boomer USB Rechargeable Rear Bike Light:

I just checked out the review for this product and noticed someone else had almost exactly the same experience as me. Let me tell you about it.

I really wanted this product to work, but it discharges so amazingly quickly compared to its front cousin that I thought the first one I owned was defective and had it replaced. The battery was OK for about four months of regular use in the second one, but now it lasts about an hour, and even discharges quickly while off, never warning me of low battery. Insult to injury, it takes hours to charge. I have had several times where I'm out in the dark and it refuses to turn on even when I charged it to full a couple days earlier and left it attached to my bike (no accidental turn ons in my pocket). Speaking of—its on button is sensitive to a feather's touch and will turn on if you bump it even lightly. This is a problem if you need to stash it in a bag or in a pocket.

I really want to like this product—ease of removal, brightness—but it has too many times put me in danger by unexpectedly leaving me in the dark.

Comment on this review

May

2012

(3 of 3 customers found this review helpful)

1.0

Not as good as other Knogs

By PuppyslashBike Lover

from Sylmar, Ca

About Me Avid Cyclist

See all my reviews

Pros

Cons

Knog Customer Service
Short battery life
Short bulb life

Best Uses

Daytime riding

Comments about Knog Boomer USB Rechargeable Rear Bike Light:

First I'd like to say I generally love Knog lights, but this thing totally sucks. I purchased the USB rechargeable Boomer tail light twice. The first one didn't really hold a charge too long. That one fell off my bike shortly after buying it (mounting is insecure and floppy). I have the USB rechargeable Boomer headlight and love it to death (bright, rechargeable, secure mounting), so I thought I'd give the taillight another go. The new tail light is even worse. It takes forever to charge (over 12 hours) and then it last for like 1-3 hours tops. I really don't like how it mounts either. I threw it in a drawer and bought a clip on light.I contacted Knog customer service and asked for a discount (not even a free light, just a discount), since I had purchased two defected lights. They weren't much help. They reiterated the charging directions to me and told me to deal with my merchant. I explained that I read the directions and was positive I was treating the light properly, since I had no trouble with the head light. Also, explained I don't have the receipt or original packaging as the light appeared to be working the first couple of hours I had it. Bottom line, I'm out [$] for buying two defective lights and Knog could care less even though I've probably bought over $200 in Knog lights over the past five years between my three bikes and gifts.

Comment on this review

Nov

2011

(0 of 2 customers found this review helpful)

5.0

Nice light

By Brian-NC

from Raleigh NC

About Me Avid Cyclist

See all my reviews

Pros

Long battery life
Rechargable

Cons

Best Uses

Comments about Knog Boomer USB Rechargeable Rear Bike Light:

I keep this on my mtb all the time because it's so light it's a great safety light. I usually ride early evenings and it's great to switch on if it gets dark out. I have yet to recharge it after a several months on my bike. Great for a lightweight safety light with the strobe effect. I was surprised to see it actually throws enough light onto the trail to make it useful for a dark ride on a gravel/paved trail.

Comment on this review

Aug

2011

(2 of 2 customers found this review helpful)

5.0

Incredibly Bright!!

By Jetflyr

from Cincinnati, OH

About Me Avid Cyclist

See all my reviews

Pros

Great visibility
Long battery life
Low battery indicator
Rechargable

Cons

Best Uses

Rear safety light

Comments about Knog Boomer USB Rechargeable Rear Bike Light:

I use this regularly for group rides and out by myself. This is the third light I've purchased because the first two were too dim. This is by far the best safety light I've found.