GSI Super Quality Bicycle Light/Audio Package - Weatherproof Dynamo Power Generator, 1W Watt LED Torch Light, And iPhone Holder - USB Port, Charge MP3/MP4 Players, Cameras Etc. - All Mounting Brackets And Wiring Included
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- All In One Great New Biking Accessory, A Must For Riding In The Dark At Night, Fits All Bicycle Frames
- Dynamo Generator Harnesses Your Energy Created By Peddling, And Charges Up The Internal Battery Of The Headlight
- The Torch Comes Equipped With A USB Slot, Where You Can Charge All Electronic USB Devices, As Music Players And Mobile Phones Etc.
- Seperate iPhone Holder Mounts On Bike Handlerbar And Receives Power From The Torch - Great For Phone Calls, Music Or GPS Use
- 1 Minute Of Peddling Results In 16 Minutes Light Power, Or 5 Minutes Of Talk On iPhone, Quick Easy Release
Top Customer Reviews
Some general info:
I measured the voltage output of the dynamo: it varies from a few Volts, to over 10 or even 15 Volts when you are going faster. I assume there is circuitry inside of the lamp unit that stabilizes the voltage to 5V, which is then output through USB.
The lamp unit has a built-in rechargable battery that gets recharged as you pedal, but it seems not to be a very good system (read below).
Now the review...
1. This device does work to charge my iPhone 3G. I've used it about 4 times for that purpose so far. As soon as you connect it via USB, the iPhone charging starts -- even when you're not pedaling (it charges the iPhone from the built-in rechargeable battery).
2. The light is of decent brightness. It works well to make you visible to cars on streets that have some street lights on them. If you want to light a very dark road ahead of you, you may want to add another light of similar brightness.
1. The built in rechargable battery seems to be garbage (either the battery or the charging circuitry). The other night I rode for almost 2 hours (about 30 miles) with the dynamo engaged and charging the battery. The next day, as a test, I was running the light without the dynamo engaged. The light lasted for only about 20 minutes, and got very dim afterwards. The conclusion is that this light will work great while you are pedaling with the dynamo engaged against the bicycle tire. Don't count on it when you want to disengage the dynamo. Mind you, I was running the light while I was charging the battery, so a lot of energy went into powering the light...Read more ›
I'm not the handiest guy, but not a complete klutz. Installing the dynamo was a bit of a pain on my bike. I'm not sure if it is the design of the dynamo/mounting bracket or my bike (or me), as it's been 30 years since the last time I installed one of these. I ended up installing it so that it rolls on the tire instead of on the metal rim. Works fine, but it's not the "right" way to do it.
I don't have an iPhone, but my LG Optimus fits very securely in the iPhone holder and no problem accessing the USB port on the LG through the iPhone port slot on the bottom. Based on the shape, I suspect it's made for an iPhone 3 / 3g / 3GS. It's a fairly hard rubber and curves around the front of the phone just a bit. Looks like the iPhone 4 will fit in it, but might be tricky getting it in and out. No cutout for camera. You might find you will get better mileage with a bike mount specifically designed for your phone from a better known company, but it's worth trying out first.
I haven't ridden with it at night, but the light is certainly bright enough to make you visible. I doubt it is going to be much of a headlight with its single LED.
The whole point of this for me was the USB charging port.Read more ›
I ride mainly during the day.Average distance is 6 miles per trip. Upwards to 25 miles. I stream Pandora and use Mapmyride app for GPS and mapping.
as possible back up dynamo's.
Most Recent Customer Reviews
When I first got the light the Dynamo was defective. I sent it back at my own expence. I've paid for shipping both ways now.
Because their product was defective. Read more
Very excited about the potential for this product. Had a little trouble with the setup but once got it hooked up right, it worked great ... Read morePublished on July 28, 2012 by mlm
This product is a great idea and was great when it worked. Unfortunately the light stopped working unless its connected to power source and even then only blinks. Read morePublished on May 14, 2012 by BikeCommuter
I read many reviews and there is a lot of good information on this item. I like the idea of a USB port, with built in battery, and that's why I bought the system. Read morePublished on March 8, 2012 by Macpaulster
This is exactly what I was looking for. The lamp arrived charged and I could charge my phone with it right away from 65% to 83% before the GSI battery was low. Read morePublished on February 25, 2012 by Tim
Great light, great concept, I wonder why six volts and not 12, also, the friction wheel on the generator comes off outregauosly easy, first 15, 18 miles the friction wheel came off... Read morePublished on January 26, 2012 by Dante
I couldn't even get the generator to mount, then I discovered it was missing a part. I had other generators, so just connected the light up do one of those instead. Read morePublished on January 25, 2012 by Consumer Advocate
... but turned out to be not what I wanted.
I was excited by the prospect of being able to charge my Android phone while biking. Read more
By peddling I make power! Here's the skinny-
It's light and small to fit on the front of I'd imagine just about any bike. Read more